X-Git-Url: http://git.ipfire.org/?a=blobdiff_plain;f=libcpp%2Fdirectives.c;h=1ada834da17482ebd75fd9ed57312b0e41cd24a7;hb=09d943db95964895157c8bb6a691dc4f3719afe6;hp=e8516e0f39c3fbe96d2edf2d5f4ceeb55e70c679;hpb=2d507e6702aca4771ce5497dcac7df12a9ce3eae;p=thirdparty%2Fgcc.git
diff --git a/libcpp/directives.c b/libcpp/directives.c
index e8516e0f39c3..1ada834da174 100644
--- a/libcpp/directives.c
+++ b/libcpp/directives.c
@@ -1,14 +1,12 @@
/* CPP Library. (Directive handling.)
- Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
- 1999, 2000, 2001, 2002, 2003, 2004, 2005,
- 2007 Free Software Foundation, Inc.
+ Copyright (C) 1986-2019 Free Software Foundation, Inc.
Contributed by Per Bothner, 1994-95.
Based on CCCP program by Paul Rubin, June 1986
Adapted to ANSI C, Richard Stallman, Jan 1987
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
-Free Software Foundation; either version 2, or (at your option) any
+Free Software Foundation; either version 3, or (at your option) any
later version.
This program is distributed in the hope that it will be useful,
@@ -17,8 +15,8 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+along with this program; see the file COPYING3. If not see
+. */
#include "config.h"
#include "system.h"
@@ -32,7 +30,7 @@ Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
struct if_stack
{
struct if_stack *next;
- unsigned int line; /* Line where condition started. */
+ location_t line; /* Line where condition started. */
const cpp_hashnode *mi_cmacro;/* macro name for #ifndef around entire file */
bool skip_elses; /* Can future #else / #elif be skipped? */
bool was_skipping; /* If were skipping on entry. */
@@ -75,6 +73,7 @@ struct pragma_entry
#define INCL (1 << 2)
#define IN_I (1 << 3)
#define EXPAND (1 << 4)
+#define DEPRECATED (1 << 5)
/* Defines one #-directive, including how to handle it. */
typedef void (*directive_handler) (cpp_reader *);
@@ -91,18 +90,20 @@ struct directive
/* Forward declarations. */
static void skip_rest_of_line (cpp_reader *);
-static void check_eol (cpp_reader *);
+static void check_eol (cpp_reader *, bool);
static void start_directive (cpp_reader *);
static void prepare_directive_trad (cpp_reader *);
static void end_directive (cpp_reader *, int);
static void directive_diagnostics (cpp_reader *, const directive *, int);
static void run_directive (cpp_reader *, int, const char *, size_t);
static char *glue_header_name (cpp_reader *);
-static const char *parse_include (cpp_reader *, int *, const cpp_token ***);
+static const char *parse_include (cpp_reader *, int *, const cpp_token ***,
+ location_t *);
static void push_conditional (cpp_reader *, int, int, const cpp_hashnode *);
static unsigned int read_flag (cpp_reader *, unsigned int);
-static int strtoul_for_line (const uchar *, unsigned int, unsigned long *);
-static void do_diagnostic (cpp_reader *, int, int);
+static bool strtolinenum (const uchar *, size_t, linenum_type *, bool *);
+static void do_diagnostic (cpp_reader *, enum cpp_diagnostic_level code,
+ enum cpp_warning_reason reason, int);
static cpp_hashnode *lex_macro_node (cpp_reader *, bool);
static int undefine_macros (cpp_reader *, cpp_hashnode *, void *);
static void do_include_common (cpp_reader *, enum include_type);
@@ -116,44 +117,46 @@ static void do_pragma_once (cpp_reader *);
static void do_pragma_poison (cpp_reader *);
static void do_pragma_system_header (cpp_reader *);
static void do_pragma_dependency (cpp_reader *);
+static void do_pragma_warning_or_error (cpp_reader *, bool error);
+static void do_pragma_warning (cpp_reader *);
+static void do_pragma_error (cpp_reader *);
static void do_linemarker (cpp_reader *);
static const cpp_token *get_token_no_padding (cpp_reader *);
static const cpp_token *get__Pragma_string (cpp_reader *);
-static void destringize_and_run (cpp_reader *, const cpp_string *);
-static int parse_answer (cpp_reader *, struct answer **, int);
-static cpp_hashnode *parse_assertion (cpp_reader *, struct answer **, int);
-static struct answer ** find_answer (cpp_hashnode *, const struct answer *);
+static void destringize_and_run (cpp_reader *, const cpp_string *,
+ location_t);
+static bool parse_answer (cpp_reader *, int, location_t, cpp_macro **);
+static cpp_hashnode *parse_assertion (cpp_reader *, int, cpp_macro **);
+static cpp_macro **find_answer (cpp_hashnode *, const cpp_macro *);
static void handle_assertion (cpp_reader *, const char *, int);
+static void do_pragma_push_macro (cpp_reader *);
+static void do_pragma_pop_macro (cpp_reader *);
+static void cpp_pop_definition (cpp_reader *, struct def_pragma_macro *);
-/* This is the table of directive handlers. It is ordered by
- frequency of occurrence; the numbers at the end are directive
- counts from all the source code I have lying around (egcs and libc
- CVS as of 1999-05-18, plus grub-0.5.91, linux-2.2.9, and
- pcmcia-cs-3.0.9). This is no longer important as directive lookup
- is now O(1). All extensions other than #warning and #include_next
- are deprecated. The name is where the extension appears to have
- come from. */
+/* This is the table of directive handlers. All extensions other than
+ #warning, #include_next, and #import are deprecated. The name is
+ where the extension appears to have come from. */
#define DIRECTIVE_TABLE \
-D(define, T_DEFINE = 0, KANDR, IN_I) /* 270554 */ \
-D(include, T_INCLUDE, KANDR, INCL | EXPAND) /* 52262 */ \
-D(endif, T_ENDIF, KANDR, COND) /* 45855 */ \
-D(ifdef, T_IFDEF, KANDR, COND | IF_COND) /* 22000 */ \
-D(if, T_IF, KANDR, COND | IF_COND | EXPAND) /* 18162 */ \
-D(else, T_ELSE, KANDR, COND) /* 9863 */ \
-D(ifndef, T_IFNDEF, KANDR, COND | IF_COND) /* 9675 */ \
-D(undef, T_UNDEF, KANDR, IN_I) /* 4837 */ \
-D(line, T_LINE, KANDR, EXPAND) /* 2465 */ \
-D(elif, T_ELIF, STDC89, COND | EXPAND) /* 610 */ \
-D(error, T_ERROR, STDC89, 0) /* 475 */ \
-D(pragma, T_PRAGMA, STDC89, IN_I) /* 195 */ \
-D(warning, T_WARNING, EXTENSION, 0) /* 22 */ \
-D(include_next, T_INCLUDE_NEXT, EXTENSION, INCL | EXPAND) /* 19 */ \
-D(ident, T_IDENT, EXTENSION, IN_I) /* 11 */ \
-D(import, T_IMPORT, EXTENSION, INCL | EXPAND) /* 0 ObjC */ \
-D(assert, T_ASSERT, EXTENSION, 0) /* 0 SVR4 */ \
-D(unassert, T_UNASSERT, EXTENSION, 0) /* 0 SVR4 */ \
-D(sccs, T_SCCS, EXTENSION, IN_I) /* 0 SVR4? */
+ D(define, T_DEFINE = 0, KANDR, IN_I) \
+ D(include, T_INCLUDE, KANDR, INCL | EXPAND) \
+ D(endif, T_ENDIF, KANDR, COND) \
+ D(ifdef, T_IFDEF, KANDR, COND | IF_COND) \
+ D(if, T_IF, KANDR, COND | IF_COND | EXPAND) \
+ D(else, T_ELSE, KANDR, COND) \
+ D(ifndef, T_IFNDEF, KANDR, COND | IF_COND) \
+ D(undef, T_UNDEF, KANDR, IN_I) \
+ D(line, T_LINE, KANDR, EXPAND) \
+ D(elif, T_ELIF, STDC89, COND | EXPAND) \
+ D(error, T_ERROR, STDC89, 0) \
+ D(pragma, T_PRAGMA, STDC89, IN_I) \
+ D(warning, T_WARNING, EXTENSION, 0) \
+ D(include_next, T_INCLUDE_NEXT, EXTENSION, INCL | EXPAND) \
+ D(ident, T_IDENT, EXTENSION, IN_I) \
+ D(import, T_IMPORT, EXTENSION, INCL | EXPAND) /* ObjC */ \
+ D(assert, T_ASSERT, EXTENSION, DEPRECATED) /* SVR4 */ \
+ D(unassert, T_UNASSERT, EXTENSION, DEPRECATED) /* SVR4 */ \
+ D(sccs, T_SCCS, EXTENSION, IN_I) /* SVR4? */
/* #sccs is synonymous with #ident. */
#define do_sccs do_ident
@@ -181,6 +184,16 @@ static const directive dtable[] =
DIRECTIVE_TABLE
};
#undef D
+
+/* A NULL-terminated array of directive names for use
+ when suggesting corrections for misspelled directives. */
+#define D(name, t, origin, flags) #name,
+static const char * const directive_names[] = {
+DIRECTIVE_TABLE
+ NULL
+};
+#undef D
+
#undef DIRECTIVE_TABLE
/* Wrapper struct directive for linemarkers.
@@ -188,11 +201,9 @@ DIRECTIVE_TABLE
did use this notation in its preprocessed output. */
static const directive linemarker_dir =
{
- do_linemarker, U"#", 1, KANDR, IN_I
+ do_linemarker, UC"#", 1, KANDR, IN_I
};
-#define SEEN_EOL() (pfile->cur_token[-1].type == CPP_EOF)
-
/* Skip any remaining tokens in a directive. */
static void
skip_rest_of_line (cpp_reader *pfile)
@@ -207,13 +218,33 @@ skip_rest_of_line (cpp_reader *pfile)
;
}
-/* Ensure there are no stray tokens at the end of a directive. */
+/* Helper function for check_oel. */
+
static void
-check_eol (cpp_reader *pfile)
+check_eol_1 (cpp_reader *pfile, bool expand, enum cpp_warning_reason reason)
{
- if (! SEEN_EOL () && _cpp_lex_token (pfile)->type != CPP_EOF)
- cpp_error (pfile, CPP_DL_PEDWARN, "extra tokens at end of #%s directive",
- pfile->directive->name);
+ if (! SEEN_EOL () && (expand
+ ? cpp_get_token (pfile)
+ : _cpp_lex_token (pfile))->type != CPP_EOF)
+ cpp_pedwarning (pfile, reason, "extra tokens at end of #%s directive",
+ pfile->directive->name);
+}
+
+/* Variant of check_eol used for Wendif-labels warnings. */
+
+static void
+check_eol_endif_labels (cpp_reader *pfile)
+{
+ check_eol_1 (pfile, false, CPP_W_ENDIF_LABELS);
+}
+
+/* Ensure there are no stray tokens at the end of a directive. If
+ EXPAND is true, tokens macro-expanding to nothing are allowed. */
+
+static void
+check_eol (cpp_reader *pfile, bool expand)
+{
+ check_eol_1 (pfile, expand, CPP_W_NONE);
}
/* Ensure there are no stray tokens other than comments at the end of
@@ -273,16 +304,17 @@ start_directive (cpp_reader *pfile)
static void
end_directive (cpp_reader *pfile, int skip_line)
{
- if (pfile->state.in_deferred_pragma)
- ;
- else if (CPP_OPTION (pfile, traditional))
+ if (CPP_OPTION (pfile, traditional))
{
/* Revert change of prepare_directive_trad. */
- pfile->state.prevent_expansion--;
+ if (!pfile->state.in_deferred_pragma)
+ pfile->state.prevent_expansion--;
if (pfile->directive != &dtable[T_DEFINE])
_cpp_remove_overlay (pfile);
}
+ else if (pfile->state.in_deferred_pragma)
+ ;
/* We don't skip for an assembler #. */
else if (skip_line)
{
@@ -319,7 +351,7 @@ prepare_directive_trad (cpp_reader *pfile)
if (no_expand)
pfile->state.prevent_expansion++;
- _cpp_scan_out_logical_line (pfile, NULL);
+ _cpp_scan_out_logical_line (pfile, NULL, false);
if (no_expand)
pfile->state.prevent_expansion--;
@@ -337,11 +369,20 @@ prepare_directive_trad (cpp_reader *pfile)
static void
directive_diagnostics (cpp_reader *pfile, const directive *dir, int indented)
{
- /* Issue -pedantic warnings for extensions. */
- if (CPP_PEDANTIC (pfile)
- && ! pfile->state.skipping
- && dir->origin == EXTENSION)
- cpp_error (pfile, CPP_DL_PEDWARN, "#%s is a GCC extension", dir->name);
+ /* Issue -pedantic or deprecated warnings for extensions. We let
+ -pedantic take precedence if both are applicable. */
+ if (! pfile->state.skipping)
+ {
+ if (dir->origin == EXTENSION
+ && !(dir == &dtable[T_IMPORT] && CPP_OPTION (pfile, objc))
+ && CPP_PEDANTIC (pfile))
+ cpp_error (pfile, CPP_DL_PEDWARN, "#%s is a GCC extension", dir->name);
+ else if (((dir->flags & DEPRECATED) != 0
+ || (dir == &dtable[T_IMPORT] && !CPP_OPTION (pfile, objc)))
+ && CPP_OPTION (pfile, cpp_warn_deprecated))
+ cpp_warning (pfile, CPP_W_DEPRECATED,
+ "#%s is a deprecated GCC extension", dir->name);
+ }
/* Traditionally, a directive is ignored unless its # is in
column 1. Therefore in code intended to work with K+R
@@ -352,16 +393,16 @@ directive_diagnostics (cpp_reader *pfile, const directive *dir, int indented)
if (CPP_WTRADITIONAL (pfile))
{
if (dir == &dtable[T_ELIF])
- cpp_error (pfile, CPP_DL_WARNING,
- "suggest not using #elif in traditional C");
+ cpp_warning (pfile, CPP_W_TRADITIONAL,
+ "suggest not using #elif in traditional C");
else if (indented && dir->origin == KANDR)
- cpp_error (pfile, CPP_DL_WARNING,
- "traditional C ignores #%s with the # indented",
- dir->name);
+ cpp_warning (pfile, CPP_W_TRADITIONAL,
+ "traditional C ignores #%s with the # indented",
+ dir->name);
else if (!indented && dir->origin != KANDR)
- cpp_error (pfile, CPP_DL_WARNING,
- "suggest hiding #%s from traditional C with an indented #",
- dir->name);
+ cpp_warning (pfile, CPP_W_TRADITIONAL,
+ "suggest hiding #%s from traditional C with an indented #",
+ dir->name);
}
}
@@ -384,7 +425,7 @@ _cpp_handle_directive (cpp_reader *pfile, int indented)
if (was_parsing_args)
{
- if (CPP_OPTION (pfile, pedantic))
+ if (CPP_OPTION (pfile, cpp_pedantic))
cpp_error (pfile, CPP_DL_PEDWARN,
"embedding a directive within macro arguments is not portable");
pfile->state.parsing_args = 0;
@@ -395,8 +436,8 @@ _cpp_handle_directive (cpp_reader *pfile, int indented)
if (dname->type == CPP_NAME)
{
- if (dname->val.node->is_directive)
- dir = &dtable[dname->val.node->directive_index];
+ if (dname->val.node.node->is_directive)
+ dir = &dtable[dname->val.node.node->directive_index];
}
/* We do not recognize the # followed by a number extension in
assembler code. */
@@ -428,7 +469,7 @@ _cpp_handle_directive (cpp_reader *pfile, int indented)
We exclude the -fdirectives-only case because macro expansion
has not been performed yet, and block comments can cause spaces
- to preceed the directive. */
+ to precede the directive. */
if (CPP_OPTION (pfile, preprocessed)
&& !CPP_OPTION (pfile, directives_only)
&& (indented || !(dir->flags & IN_I)))
@@ -461,8 +502,35 @@ _cpp_handle_directive (cpp_reader *pfile, int indented)
if (CPP_OPTION (pfile, lang) == CLK_ASM)
skip = 0;
else if (!pfile->state.skipping)
- cpp_error (pfile, CPP_DL_ERROR, "invalid preprocessing directive #%s",
- cpp_token_as_text (pfile, dname));
+ {
+ const char *unrecognized
+ = (const char *)cpp_token_as_text (pfile, dname);
+ const char *hint = NULL;
+
+ /* Call back into gcc to get a spelling suggestion. Ideally
+ we'd just use best_match from gcc/spellcheck.h (and filter
+ out the uncommon directives), but that requires moving it
+ to a support library. */
+ if (pfile->cb.get_suggestion)
+ hint = pfile->cb.get_suggestion (pfile, unrecognized,
+ directive_names);
+
+ if (hint)
+ {
+ rich_location richloc (pfile->line_table, dname->src_loc);
+ source_range misspelled_token_range
+ = get_range_from_loc (pfile->line_table, dname->src_loc);
+ richloc.add_fixit_replace (misspelled_token_range, hint);
+ cpp_error_at (pfile, CPP_DL_ERROR, &richloc,
+ "invalid preprocessing directive #%s;"
+ " did you mean #%s?",
+ unrecognized, hint);
+ }
+ else
+ cpp_error (pfile, CPP_DL_ERROR,
+ "invalid preprocessing directive #%s",
+ unrecognized);
+ }
}
pfile->directive = dir;
@@ -475,7 +543,7 @@ _cpp_handle_directive (cpp_reader *pfile, int indented)
_cpp_backup_tokens (pfile, 1);
end_directive (pfile, skip);
- if (was_parsing_args)
+ if (was_parsing_args && !pfile->state.in_deferred_pragma)
{
/* Restore state when within macro args. */
pfile->state.parsing_args = 2;
@@ -525,18 +593,23 @@ lex_macro_node (cpp_reader *pfile, bool is_def_or_undef)
if (token->type == CPP_NAME)
{
- cpp_hashnode *node = token->val.node;
+ cpp_hashnode *node = token->val.node.node;
if (is_def_or_undef && node == pfile->spec_nodes.n_defined)
cpp_error (pfile, CPP_DL_ERROR,
"\"defined\" cannot be used as a macro name");
+ else if (is_def_or_undef
+ && (node == pfile->spec_nodes.n__has_include__
+ || node == pfile->spec_nodes.n__has_include_next__))
+ cpp_error (pfile, CPP_DL_ERROR,
+ "\"__has_include__\" cannot be used as a macro name");
else if (! (node->flags & NODE_POISONED))
return node;
}
else if (token->flags & NAMED_OP)
cpp_error (pfile, CPP_DL_ERROR,
"\"%s\" cannot be used as a macro name as it is an operator in C++",
- NODE_NAME (token->val.node));
+ NODE_NAME (token->val.node.node));
else if (token->type == CPP_EOF)
cpp_error (pfile, CPP_DL_ERROR, "no macro name given in #%s directive",
pfile->directive->name);
@@ -559,9 +632,14 @@ do_define (cpp_reader *pfile)
pfile->state.save_comments =
! CPP_OPTION (pfile, discard_comments_in_macro_exp);
+ if (pfile->cb.before_define)
+ pfile->cb.before_define (pfile);
+
if (_cpp_create_definition (pfile, node))
if (pfile->cb.define)
pfile->cb.define (pfile, pfile->directive_line, node);
+
+ node->flags &= ~NODE_USED;
}
}
@@ -573,16 +651,24 @@ do_undef (cpp_reader *pfile)
if (node)
{
+ if (pfile->cb.before_define)
+ pfile->cb.before_define (pfile);
+
if (pfile->cb.undef)
pfile->cb.undef (pfile, pfile->directive_line, node);
/* 6.10.3.5 paragraph 2: [#undef] is ignored if the specified
identifier is not currently defined as a macro name. */
- if (node->type == NT_MACRO)
+ if (cpp_macro_p (node))
{
if (node->flags & NODE_WARN)
cpp_error (pfile, CPP_DL_WARNING,
"undefining \"%s\"", NODE_NAME (node));
+ else if (cpp_builtin_macro_p (node)
+ && CPP_OPTION (pfile, warn_builtin_macro_redefined))
+ cpp_warning_with_line (pfile, CPP_W_BUILTIN_MACRO_REDEFINED,
+ pfile->directive_line, 0,
+ "undefining \"%s\"", NODE_NAME (node));
if (CPP_OPTION (pfile, warn_unused_macros))
_cpp_warn_if_unused_macro (pfile, node, NULL);
@@ -591,7 +677,7 @@ do_undef (cpp_reader *pfile)
}
}
- check_eol (pfile);
+ check_eol (pfile, false);
}
/* Undefine a single macro/assertion/whatever. */
@@ -603,7 +689,8 @@ undefine_macros (cpp_reader *pfile ATTRIBUTE_UNUSED, cpp_hashnode *h,
/* Body of _cpp_free_definition inlined here for speed.
Macros and assertions no longer have anything to free. */
h->type = NT_VOID;
- h->flags &= ~(NODE_POISONED|NODE_BUILTIN|NODE_DISABLED);
+ h->value.answers = NULL;
+ h->flags &= ~(NODE_POISONED|NODE_DISABLED|NODE_USED);
return 1;
}
@@ -662,17 +749,21 @@ glue_header_name (cpp_reader *pfile)
/* Returns the file name of #include, #include_next, #import and
#pragma dependency. The string is malloced and the caller should
- free it. Returns NULL on error. */
+ free it. Returns NULL on error. LOCATION is the source location
+ of the file name. */
+
static const char *
parse_include (cpp_reader *pfile, int *pangle_brackets,
- const cpp_token ***buf)
+ const cpp_token ***buf, location_t *location)
{
char *fname;
const cpp_token *header;
/* Allow macro expansion. */
header = get_token_no_padding (pfile);
- if (header->type == CPP_STRING || header->type == CPP_HEADER_NAME)
+ *location = header->src_loc;
+ if ((header->type == CPP_STRING && header->val.str.text[0] != 'R')
+ || header->type == CPP_HEADER_NAME)
{
fname = XNEWVEC (char, header->val.str.len - 1);
memcpy (fname, header->val.str.text + 1, header->val.str.len - 2);
@@ -689,7 +780,7 @@ parse_include (cpp_reader *pfile, int *pangle_brackets,
const unsigned char *dir;
if (pfile->directive == &dtable[T_PRAGMA])
- dir = U"pragma dependency";
+ dir = UC"pragma dependency";
else
dir = pfile->directive->name;
cpp_error (pfile, CPP_DL_ERROR, "#%s expects \"FILENAME\" or ",
@@ -703,7 +794,7 @@ parse_include (cpp_reader *pfile, int *pangle_brackets,
/* This pragma allows extra tokens after the file name. */
}
else if (buf == NULL || CPP_OPTION (pfile, discard_comments))
- check_eol (pfile);
+ check_eol (pfile, true);
else
{
/* If we are not discarding comments, then gather them while
@@ -721,28 +812,23 @@ do_include_common (cpp_reader *pfile, enum include_type type)
const char *fname;
int angle_brackets;
const cpp_token **buf = NULL;
+ location_t location;
/* Re-enable saving of comments if requested, so that the include
callback can dump comments which follow #include. */
pfile->state.save_comments = ! CPP_OPTION (pfile, discard_comments);
- fname = parse_include (pfile, &angle_brackets, &buf);
+ fname = parse_include (pfile, &angle_brackets, &buf, &location);
if (!fname)
- {
- if (buf)
- XDELETEVEC (buf);
- return;
- }
+ goto done;
if (!*fname)
- {
- cpp_error (pfile, CPP_DL_ERROR, "empty filename in #%s",
- pfile->directive->name);
- XDELETEVEC (fname);
- if (buf)
- XDELETEVEC (buf);
- return;
- }
+ {
+ cpp_error_with_line (pfile, CPP_DL_ERROR, location, 0,
+ "empty filename in #%s",
+ pfile->directive->name);
+ goto done;
+ }
/* Prevent #include recursion. */
if (pfile->line_table->depth >= CPP_STACK_MAX)
@@ -757,9 +843,10 @@ do_include_common (cpp_reader *pfile, enum include_type type)
pfile->directive->name, fname, angle_brackets,
buf);
- _cpp_stack_include (pfile, fname, angle_brackets, type);
+ _cpp_stack_include (pfile, fname, angle_brackets, type, location);
}
+ done:
XDELETEVEC (fname);
if (buf)
XDELETEVEC (buf);
@@ -819,23 +906,30 @@ read_flag (cpp_reader *pfile, unsigned int last)
}
/* Subroutine of do_line and do_linemarker. Convert a number in STR,
- of length LEN, to binary; store it in NUMP, and return 0 if the
- number was well-formed, 1 if not. Temporary, hopefully. */
-static int
-strtoul_for_line (const uchar *str, unsigned int len, long unsigned int *nump)
+ of length LEN, to binary; store it in NUMP, and return false if the
+ number was well-formed, true if not. WRAPPED is set to true if the
+ number did not fit into 'unsigned long'. */
+static bool
+strtolinenum (const uchar *str, size_t len, linenum_type *nump, bool *wrapped)
{
- unsigned long reg = 0;
+ linenum_type reg = 0;
+ linenum_type reg_prev = 0;
+
uchar c;
+ *wrapped = false;
while (len--)
{
c = *str++;
if (!ISDIGIT (c))
- return 1;
+ return true;
reg *= 10;
reg += c - '0';
+ if (reg < reg_prev)
+ *wrapped = true;
+ reg_prev = reg;
}
*nump = reg;
- return 0;
+ return false;
}
/* Interpret #line command.
@@ -844,43 +938,49 @@ strtoul_for_line (const uchar *str, unsigned int len, long unsigned int *nump)
static void
do_line (cpp_reader *pfile)
{
- const struct line_maps *line_table = pfile->line_table;
- const struct line_map *map = &line_table->maps[line_table->used - 1];
+ struct line_maps *line_table = pfile->line_table;
+ const line_map_ordinary *map = LINEMAPS_LAST_ORDINARY_MAP (line_table);
/* skip_rest_of_line() may cause line table to be realloc()ed so note down
sysp right now. */
- unsigned char map_sysp = map->sysp;
+ unsigned char map_sysp = ORDINARY_MAP_IN_SYSTEM_HEADER_P (map);
const cpp_token *token;
- const char *new_file = map->to_file;
- unsigned long new_lineno;
+ const char *new_file = ORDINARY_MAP_FILE_NAME (map);
+ linenum_type new_lineno;
/* C99 raised the minimum limit on #line numbers. */
- unsigned int cap = CPP_OPTION (pfile, c99) ? 2147483647 : 32767;
+ linenum_type cap = CPP_OPTION (pfile, c99) ? 2147483647 : 32767;
+ bool wrapped;
/* #line commands expand macros. */
token = cpp_get_token (pfile);
if (token->type != CPP_NUMBER
- || strtoul_for_line (token->val.str.text, token->val.str.len,
- &new_lineno))
+ || strtolinenum (token->val.str.text, token->val.str.len,
+ &new_lineno, &wrapped))
{
- cpp_error (pfile, CPP_DL_ERROR,
- "\"%s\" after #line is not a positive integer",
- cpp_token_as_text (pfile, token));
+ if (token->type == CPP_EOF)
+ cpp_error (pfile, CPP_DL_ERROR, "unexpected end of file after #line");
+ else
+ cpp_error (pfile, CPP_DL_ERROR,
+ "\"%s\" after #line is not a positive integer",
+ cpp_token_as_text (pfile, token));
return;
}
- if (CPP_PEDANTIC (pfile) && (new_lineno == 0 || new_lineno > cap))
+ if (CPP_PEDANTIC (pfile) && (new_lineno == 0 || new_lineno > cap || wrapped))
cpp_error (pfile, CPP_DL_PEDWARN, "line number out of range");
+ else if (wrapped)
+ cpp_error (pfile, CPP_DL_WARNING, "line number out of range");
token = cpp_get_token (pfile);
if (token->type == CPP_STRING)
{
cpp_string s = { 0, 0 };
if (cpp_interpret_string_notranslate (pfile, &token->val.str, 1,
- &s, false))
+ &s, CPP_STRING))
new_file = (const char *)s.text;
- check_eol (pfile);
+ check_eol (pfile, true);
}
else if (token->type != CPP_EOF)
{
@@ -890,8 +990,9 @@ do_line (cpp_reader *pfile)
}
skip_rest_of_line (pfile);
- _cpp_do_file_change (pfile, LC_RENAME, new_file, new_lineno,
+ _cpp_do_file_change (pfile, LC_RENAME_VERBATIM, new_file, new_lineno,
map_sysp);
+ line_table->seen_line_directive = true;
}
/* Interpret the # 44 "file" [flags] notation, which has slightly
@@ -900,14 +1001,15 @@ do_line (cpp_reader *pfile)
static void
do_linemarker (cpp_reader *pfile)
{
- const struct line_maps *line_table = pfile->line_table;
- const struct line_map *map = &line_table->maps[line_table->used - 1];
+ struct line_maps *line_table = pfile->line_table;
+ const line_map_ordinary *map = LINEMAPS_LAST_ORDINARY_MAP (line_table);
const cpp_token *token;
- const char *new_file = map->to_file;
- unsigned long new_lineno;
- unsigned int new_sysp = map->sysp;
- enum lc_reason reason = LC_RENAME;
+ const char *new_file = ORDINARY_MAP_FILE_NAME (map);
+ linenum_type new_lineno;
+ unsigned int new_sysp = ORDINARY_MAP_IN_SYSTEM_HEADER_P (map);
+ enum lc_reason reason = LC_RENAME_VERBATIM;
int flag;
+ bool wrapped;
/* Back up so we can get the number again. Putting this in
_cpp_handle_directive risks two calls to _cpp_backup_tokens in
@@ -917,9 +1019,11 @@ do_linemarker (cpp_reader *pfile)
/* #line commands expand macros. */
token = cpp_get_token (pfile);
if (token->type != CPP_NUMBER
- || strtoul_for_line (token->val.str.text, token->val.str.len,
- &new_lineno))
+ || strtolinenum (token->val.str.text, token->val.str.len,
+ &new_lineno, &wrapped))
{
+ /* Unlike #line, there does not seem to be a way to get an EOF
+ here. So, it should be safe to always spell the token. */
cpp_error (pfile, CPP_DL_ERROR,
"\"%s\" after # is not a positive integer",
cpp_token_as_text (pfile, token));
@@ -931,7 +1035,7 @@ do_linemarker (cpp_reader *pfile)
{
cpp_string s = { 0, 0 };
if (cpp_interpret_string_notranslate (pfile, &token->val.str,
- 1, &s, false))
+ 1, &s, CPP_STRING))
new_file = (const char *)s.text;
new_sysp = 0;
@@ -957,7 +1061,7 @@ do_linemarker (cpp_reader *pfile)
}
pfile->buffer->sysp = new_sysp;
- check_eol (pfile);
+ check_eol (pfile, false);
}
else if (token->type != CPP_EOF)
{
@@ -967,7 +1071,33 @@ do_linemarker (cpp_reader *pfile)
}
skip_rest_of_line (pfile);
+
+ if (reason == LC_LEAVE)
+ {
+ /* Reread map since cpp_get_token can invalidate it with a
+ reallocation. */
+ map = LINEMAPS_LAST_ORDINARY_MAP (line_table);
+ const line_map_ordinary *from
+ = linemap_included_from_linemap (line_table, map);
+ if (MAIN_FILE_P (map)
+ || (from
+ && filename_cmp (ORDINARY_MAP_FILE_NAME (from), new_file) != 0))
+ {
+ cpp_warning (pfile, CPP_W_NONE,
+ "file \"%s\" linemarker ignored due to "
+ "incorrect nesting", new_file);
+ return;
+ }
+ }
+ /* Compensate for the increment in linemap_add that occurs in
+ _cpp_do_file_change. We're currently at the start of the line
+ *following* the #line directive. A separate location_t for this
+ location makes no sense (until we do the LC_LEAVE), and
+ complicates LAST_SOURCE_LINE_LOCATION. */
+ pfile->line_table->highest_location--;
+
_cpp_do_file_change (pfile, reason, new_file, new_lineno, new_sysp);
+ line_table->seen_line_directive = true;
}
/* Arrange the file_change callback. pfile->line has changed to
@@ -976,44 +1106,63 @@ do_linemarker (cpp_reader *pfile)
and zero otherwise. */
void
_cpp_do_file_change (cpp_reader *pfile, enum lc_reason reason,
- const char *to_file, unsigned int file_line,
+ const char *to_file, linenum_type file_line,
unsigned int sysp)
{
+ linemap_assert (reason != LC_ENTER_MACRO);
const struct line_map *map = linemap_add (pfile->line_table, reason, sysp,
to_file, file_line);
+ const line_map_ordinary *ord_map = NULL;
if (map != NULL)
- linemap_line_start (pfile->line_table, map->to_line, 127);
+ {
+ ord_map = linemap_check_ordinary (map);
+ linemap_line_start (pfile->line_table,
+ ORDINARY_MAP_STARTING_LINE_NUMBER (ord_map),
+ 127);
+ }
if (pfile->cb.file_change)
- pfile->cb.file_change (pfile, map);
+ pfile->cb.file_change (pfile, ord_map);
}
/* Report a warning or error detected by the program we are
processing. Use the directive's tokens in the error message. */
static void
-do_diagnostic (cpp_reader *pfile, int code, int print_dir)
+do_diagnostic (cpp_reader *pfile, enum cpp_diagnostic_level code,
+ enum cpp_warning_reason reason, int print_dir)
{
- if (_cpp_begin_message (pfile, code, pfile->cur_token[-1].src_loc, 0))
- {
- if (print_dir)
- fprintf (stderr, "#%s ", pfile->directive->name);
- pfile->state.prevent_expansion++;
- cpp_output_line (pfile, stderr);
- pfile->state.prevent_expansion--;
- }
+ const unsigned char *dir_name;
+ unsigned char *line;
+ location_t src_loc = pfile->cur_token[-1].src_loc;
+
+ if (print_dir)
+ dir_name = pfile->directive->name;
+ else
+ dir_name = NULL;
+ pfile->state.prevent_expansion++;
+ line = cpp_output_line_to_string (pfile, dir_name);
+ pfile->state.prevent_expansion--;
+
+ if (code == CPP_DL_WARNING_SYSHDR && reason)
+ cpp_warning_with_line_syshdr (pfile, reason, src_loc, 0, "%s", line);
+ else if (code == CPP_DL_WARNING && reason)
+ cpp_warning_with_line (pfile, reason, src_loc, 0, "%s", line);
+ else
+ cpp_error_with_line (pfile, code, src_loc, 0, "%s", line);
+ free (line);
}
static void
do_error (cpp_reader *pfile)
{
- do_diagnostic (pfile, CPP_DL_ERROR, 1);
+ do_diagnostic (pfile, CPP_DL_ERROR, CPP_W_NONE, 1);
}
static void
do_warning (cpp_reader *pfile)
{
/* We want #warning diagnostics to be emitted in system headers too. */
- do_diagnostic (pfile, CPP_DL_WARNING_SYSHDR, 1);
+ do_diagnostic (pfile, CPP_DL_WARNING_SYSHDR, CPP_W_WARNING_DIRECTIVE, 1);
}
/* Report program identification. */
@@ -1028,7 +1177,7 @@ do_ident (cpp_reader *pfile)
else if (pfile->cb.ident)
pfile->cb.ident (pfile, pfile->directive_line, &str->val.str);
- check_eol (pfile);
+ check_eol (pfile, false);
}
/* Lookup a PRAGMA name in a singly-linked CHAIN. Returns the
@@ -1072,7 +1221,7 @@ register_pragma_1 (cpp_reader *pfile, const char *space, const char *name,
if (space)
{
- node = cpp_lookup (pfile, U space, strlen (space));
+ node = cpp_lookup (pfile, UC space, strlen (space));
entry = lookup_pragma_entry (*chain, node);
if (!entry)
{
@@ -1101,7 +1250,7 @@ register_pragma_1 (cpp_reader *pfile, const char *space, const char *name,
}
/* Check for duplicates. */
- node = cpp_lookup (pfile, U name, strlen (name));
+ node = cpp_lookup (pfile, UC name, strlen (name));
entry = lookup_pragma_entry (*chain, node);
if (entry == NULL)
{
@@ -1186,12 +1335,16 @@ _cpp_init_internal_pragmas (cpp_reader *pfile)
{
/* Pragmas in the global namespace. */
register_pragma_internal (pfile, 0, "once", do_pragma_once);
+ register_pragma_internal (pfile, 0, "push_macro", do_pragma_push_macro);
+ register_pragma_internal (pfile, 0, "pop_macro", do_pragma_pop_macro);
/* New GCC-specific pragmas should be put in the GCC namespace. */
register_pragma_internal (pfile, "GCC", "poison", do_pragma_poison);
register_pragma_internal (pfile, "GCC", "system_header",
do_pragma_system_header);
register_pragma_internal (pfile, "GCC", "dependency", do_pragma_dependency);
+ register_pragma_internal (pfile, "GCC", "warning", do_pragma_warning);
+ register_pragma_internal (pfile, "GCC", "error", do_pragma_error);
}
/* Return the number of registered pragmas in PE. */
@@ -1249,7 +1402,7 @@ restore_registered_pragmas (cpp_reader *pfile, struct pragma_entry *pe,
{
if (pe->is_nspace)
sd = restore_registered_pragmas (pfile, pe->u.space, sd);
- pe->pragma = cpp_lookup (pfile, U *sd, strlen (*sd));
+ pe->pragma = cpp_lookup (pfile, UC *sd, strlen (*sd));
free (*sd);
sd++;
}
@@ -1276,25 +1429,28 @@ static void
do_pragma (cpp_reader *pfile)
{
const struct pragma_entry *p = NULL;
- const cpp_token *token, *pragma_token = pfile->cur_token;
+ const cpp_token *token, *pragma_token;
+ location_t pragma_token_virt_loc = 0;
cpp_token ns_token;
unsigned int count = 1;
pfile->state.prevent_expansion++;
- token = cpp_get_token (pfile);
+ pragma_token = token = cpp_get_token_with_location (pfile,
+ &pragma_token_virt_loc);
ns_token = *token;
if (token->type == CPP_NAME)
{
- p = lookup_pragma_entry (pfile->pragmas, token->val.node);
+ p = lookup_pragma_entry (pfile->pragmas, token->val.node.node);
if (p && p->is_nspace)
{
bool allow_name_expansion = p->allow_expansion;
if (allow_name_expansion)
pfile->state.prevent_expansion--;
+
token = cpp_get_token (pfile);
if (token->type == CPP_NAME)
- p = lookup_pragma_entry (p->u.space, token->val.node);
+ p = lookup_pragma_entry (p->u.space, token->val.node.node);
else
p = NULL;
if (allow_name_expansion)
@@ -1307,7 +1463,7 @@ do_pragma (cpp_reader *pfile)
{
if (p->is_deferred)
{
- pfile->directive_result.src_loc = pragma_token->src_loc;
+ pfile->directive_result.src_loc = pragma_token_virt_loc;
pfile->directive_result.type = CPP_PRAGMA;
pfile->directive_result.flags = pragma_token->flags;
pfile->directive_result.val.pragma = p->u.ident;
@@ -1361,10 +1517,120 @@ do_pragma_once (cpp_reader *pfile)
if (cpp_in_primary_file (pfile))
cpp_error (pfile, CPP_DL_WARNING, "#pragma once in main file");
- check_eol (pfile);
+ check_eol (pfile, false);
_cpp_mark_file_once_only (pfile, pfile->buffer->file);
}
+/* Handle #pragma push_macro(STRING). */
+static void
+do_pragma_push_macro (cpp_reader *pfile)
+{
+ cpp_hashnode *node;
+ size_t defnlen;
+ const uchar *defn = NULL;
+ char *macroname, *dest;
+ const char *limit, *src;
+ const cpp_token *txt;
+ struct def_pragma_macro *c;
+
+ txt = get__Pragma_string (pfile);
+ if (!txt)
+ {
+ location_t src_loc = pfile->cur_token[-1].src_loc;
+ cpp_error_with_line (pfile, CPP_DL_ERROR, src_loc, 0,
+ "invalid #pragma push_macro directive");
+ check_eol (pfile, false);
+ skip_rest_of_line (pfile);
+ return;
+ }
+ dest = macroname = (char *) alloca (txt->val.str.len + 2);
+ src = (const char *) (txt->val.str.text + 1 + (txt->val.str.text[0] == 'L'));
+ limit = (const char *) (txt->val.str.text + txt->val.str.len - 1);
+ while (src < limit)
+ {
+ /* We know there is a character following the backslash. */
+ if (*src == '\\' && (src[1] == '\\' || src[1] == '"'))
+ src++;
+ *dest++ = *src++;
+ }
+ *dest = 0;
+ check_eol (pfile, false);
+ skip_rest_of_line (pfile);
+ c = XNEW (struct def_pragma_macro);
+ memset (c, 0, sizeof (struct def_pragma_macro));
+ c->name = XNEWVAR (char, strlen (macroname) + 1);
+ strcpy (c->name, macroname);
+ c->next = pfile->pushed_macros;
+ node = _cpp_lex_identifier (pfile, c->name);
+ if (node->type == NT_VOID)
+ c->is_undef = 1;
+ else
+ {
+ defn = cpp_macro_definition (pfile, node);
+ defnlen = ustrlen (defn);
+ c->definition = XNEWVEC (uchar, defnlen + 2);
+ c->definition[defnlen] = '\n';
+ c->definition[defnlen + 1] = 0;
+ c->line = node->value.macro->line;
+ c->syshdr = node->value.macro->syshdr;
+ c->used = node->value.macro->used;
+ memcpy (c->definition, defn, defnlen);
+ }
+
+ pfile->pushed_macros = c;
+}
+
+/* Handle #pragma pop_macro(STRING). */
+static void
+do_pragma_pop_macro (cpp_reader *pfile)
+{
+ char *macroname, *dest;
+ const char *limit, *src;
+ const cpp_token *txt;
+ struct def_pragma_macro *l = NULL, *c = pfile->pushed_macros;
+ txt = get__Pragma_string (pfile);
+ if (!txt)
+ {
+ location_t src_loc = pfile->cur_token[-1].src_loc;
+ cpp_error_with_line (pfile, CPP_DL_ERROR, src_loc, 0,
+ "invalid #pragma pop_macro directive");
+ check_eol (pfile, false);
+ skip_rest_of_line (pfile);
+ return;
+ }
+ dest = macroname = (char *) alloca (txt->val.str.len + 2);
+ src = (const char *) (txt->val.str.text + 1 + (txt->val.str.text[0] == 'L'));
+ limit = (const char *) (txt->val.str.text + txt->val.str.len - 1);
+ while (src < limit)
+ {
+ /* We know there is a character following the backslash. */
+ if (*src == '\\' && (src[1] == '\\' || src[1] == '"'))
+ src++;
+ *dest++ = *src++;
+ }
+ *dest = 0;
+ check_eol (pfile, false);
+ skip_rest_of_line (pfile);
+
+ while (c != NULL)
+ {
+ if (!strcmp (c->name, macroname))
+ {
+ if (!l)
+ pfile->pushed_macros = c->next;
+ else
+ l->next = c->next;
+ cpp_pop_definition (pfile, c);
+ free (c->definition);
+ free (c->name);
+ free (c);
+ break;
+ }
+ l = c;
+ c = c->next;
+ }
+}
+
/* Handle #pragma GCC poison, to poison one or more identifiers so
that the lexer produces a hard error for each subsequent usage. */
static void
@@ -1386,11 +1652,11 @@ do_pragma_poison (cpp_reader *pfile)
break;
}
- hp = tok->val.node;
+ hp = tok->val.node.node;
if (hp->flags & NODE_POISONED)
continue;
- if (hp->type == NT_MACRO)
+ if (cpp_macro_p (hp))
cpp_error (pfile, CPP_DL_WARNING, "poisoning existing macro \"%s\"",
NODE_NAME (hp));
_cpp_free_definition (hp);
@@ -1413,7 +1679,7 @@ do_pragma_system_header (cpp_reader *pfile)
"#pragma system_header ignored outside include file");
else
{
- check_eol (pfile);
+ check_eol (pfile, false);
skip_rest_of_line (pfile);
cpp_make_system_header (pfile, 1, 0);
}
@@ -1427,8 +1693,9 @@ do_pragma_dependency (cpp_reader *pfile)
{
const char *fname;
int angle_brackets, ordering;
+ location_t location;
- fname = parse_include (pfile, &angle_brackets, NULL);
+ fname = parse_include (pfile, &angle_brackets, NULL, &location);
if (!fname)
return;
@@ -1442,13 +1709,49 @@ do_pragma_dependency (cpp_reader *pfile)
if (cpp_get_token (pfile)->type != CPP_EOF)
{
_cpp_backup_tokens (pfile, 1);
- do_diagnostic (pfile, CPP_DL_WARNING, 0);
+ do_diagnostic (pfile, CPP_DL_WARNING, CPP_W_NONE, 0);
}
}
free ((void *) fname);
}
+/* Issue a diagnostic with the message taken from the pragma. If
+ ERROR is true, the diagnostic is a warning, otherwise, it is an
+ error. */
+static void
+do_pragma_warning_or_error (cpp_reader *pfile, bool error)
+{
+ const cpp_token *tok = _cpp_lex_token (pfile);
+ cpp_string str;
+ if (tok->type != CPP_STRING
+ || !cpp_interpret_string_notranslate (pfile, &tok->val.str, 1, &str,
+ CPP_STRING)
+ || str.len == 0)
+ {
+ cpp_error (pfile, CPP_DL_ERROR, "invalid \"#pragma GCC %s\" directive",
+ error ? "error" : "warning");
+ return;
+ }
+ cpp_error (pfile, error ? CPP_DL_ERROR : CPP_DL_WARNING,
+ "%s", str.text);
+ free ((void *)str.text);
+}
+
+/* Issue a warning diagnostic. */
+static void
+do_pragma_warning (cpp_reader *pfile)
+{
+ do_pragma_warning_or_error (pfile, false);
+}
+
+/* Issue an error diagnostic. */
+static void
+do_pragma_error (cpp_reader *pfile)
+{
+ do_pragma_warning_or_error (pfile, true);
+}
+
/* Get a token but skip padding. */
static const cpp_token *
get_token_no_padding (cpp_reader *pfile)
@@ -1478,7 +1781,9 @@ get__Pragma_string (cpp_reader *pfile)
string = get_token_no_padding (pfile);
if (string->type == CPP_EOF)
_cpp_backup_tokens (pfile, 1);
- if (string->type != CPP_STRING && string->type != CPP_WSTRING)
+ if (string->type != CPP_STRING && string->type != CPP_WSTRING
+ && string->type != CPP_STRING32 && string->type != CPP_STRING16
+ && string->type != CPP_UTF8STRING)
return NULL;
paren = get_token_no_padding (pfile);
@@ -1493,7 +1798,8 @@ get__Pragma_string (cpp_reader *pfile)
/* Destringize IN into a temporary buffer, by removing the first \ of
\" and \\ sequences, and process the result as a #pragma directive. */
static void
-destringize_and_run (cpp_reader *pfile, const cpp_string *in)
+destringize_and_run (cpp_reader *pfile, const cpp_string *in,
+ location_t expansion_loc)
{
const unsigned char *src, *limit;
char *dest, *result;
@@ -1502,6 +1808,7 @@ destringize_and_run (cpp_reader *pfile, const cpp_string *in)
tokenrun *saved_cur_run;
cpp_token *toks;
int count;
+ const struct directive *save_directive;
dest = result = (char *) alloca (in->len - 1);
src = in->text + 1 + (in->text[0] == 'L');
@@ -1527,10 +1834,7 @@ destringize_and_run (cpp_reader *pfile, const cpp_string *in)
saved_cur_token = pfile->cur_token;
saved_cur_run = pfile->cur_run;
- pfile->context = XNEW (cpp_context);
- pfile->context->macro = 0;
- pfile->context->prev = 0;
- pfile->context->next = 0;
+ pfile->context = XCNEW (cpp_context);
/* Inline run_directive, since we need to delay the _cpp_pop_buffer
until we've read all of the tokens that we want. */
@@ -1542,8 +1846,11 @@ destringize_and_run (cpp_reader *pfile, const cpp_string *in)
start_directive (pfile);
_cpp_clean_line (pfile);
+ save_directive = pfile->directive;
+ pfile->directive = &dtable[T_PRAGMA];
do_pragma (pfile);
end_directive (pfile, 1);
+ pfile->directive = save_directive;
/* We always insert at least one token, the directive result. It'll
either be a CPP_PADDING or a CPP_PRAGMA. In the later case, we
@@ -1572,6 +1879,12 @@ destringize_and_run (cpp_reader *pfile, const cpp_string *in)
toks = XRESIZEVEC (cpp_token, toks, maxcount);
}
toks[count] = *cpp_get_token (pfile);
+ /* _Pragma is a builtin, so we're not within a macro-map, and so
+ the token locations are set to bogus ordinary locations
+ near to, but after that of the "_Pragma".
+ Paper over this by setting them equal to the location of the
+ _Pragma itself (PR preprocessor/69126). */
+ toks[count].src_loc = expansion_loc;
/* Macros have been already expanded by cpp_get_token
if the pragma allowed expansion. */
toks[count++].flags |= NO_EXPAND;
@@ -1606,14 +1919,14 @@ destringize_and_run (cpp_reader *pfile, const cpp_string *in)
/* Handle the _Pragma operator. Return 0 on error, 1 if ok. */
int
-_cpp_do__Pragma (cpp_reader *pfile)
+_cpp_do__Pragma (cpp_reader *pfile, location_t expansion_loc)
{
const cpp_token *string = get__Pragma_string (pfile);
pfile->directive_result.type = CPP_PADDING;
if (string)
{
- destringize_and_run (pfile, &string->val.str);
+ destringize_and_run (pfile, &string->val.str, expansion_loc);
return 1;
}
cpp_error (pfile, CPP_DL_ERROR,
@@ -1629,13 +1942,20 @@ do_ifdef (cpp_reader *pfile)
if (! pfile->state.skipping)
{
- const cpp_hashnode *node = lex_macro_node (pfile, false);
+ cpp_hashnode *node = lex_macro_node (pfile, false);
if (node)
{
- skip = node->type != NT_MACRO;
+ /* Do not treat conditional macros as being defined. This is due to
+ the powerpc and spu ports using conditional macros for 'vector',
+ 'bool', and 'pixel' to act as conditional keywords. This messes
+ up tests like #ifndef bool. */
+ skip = !cpp_macro_p (node) || (node->flags & NODE_CONDITIONAL);
_cpp_mark_macro_used (node);
- check_eol (pfile);
+ _cpp_maybe_notify_macro_use (pfile, node);
+ if (pfile->cb.used)
+ pfile->cb.used (pfile, pfile->directive_line, node);
+ check_eol (pfile, false);
}
}
@@ -1647,7 +1967,7 @@ static void
do_ifndef (cpp_reader *pfile)
{
int skip = 1;
- const cpp_hashnode *node = 0;
+ cpp_hashnode *node = 0;
if (! pfile->state.skipping)
{
@@ -1655,9 +1975,17 @@ do_ifndef (cpp_reader *pfile)
if (node)
{
- skip = node->type == NT_MACRO;
+ /* Do not treat conditional macros as being defined. This is due to
+ the powerpc and spu ports using conditional macros for 'vector',
+ 'bool', and 'pixel' to act as conditional keywords. This messes
+ up tests like #ifndef bool. */
+ skip = (cpp_macro_p (node)
+ && !(node->flags & NODE_CONDITIONAL));
_cpp_mark_macro_used (node);
- check_eol (pfile);
+ _cpp_maybe_notify_macro_use (pfile, node);
+ if (pfile->cb.used)
+ pfile->cb.used (pfile, pfile->directive_line, node);
+ check_eol (pfile, false);
}
}
@@ -1675,7 +2003,7 @@ do_if (cpp_reader *pfile)
int skip = 1;
if (! pfile->state.skipping)
- skip = _cpp_parse_expr (pfile) == false;
+ skip = _cpp_parse_expr (pfile, true) == false;
push_conditional (pfile, skip, T_IF, pfile->mi_ind_cmacro);
}
@@ -1710,7 +2038,7 @@ do_else (cpp_reader *pfile)
/* Only check EOL if was not originally skipping. */
if (!ifs->was_skipping && CPP_OPTION (pfile, warn_endif_labels))
- check_eol (pfile);
+ check_eol_endif_labels (pfile);
}
}
@@ -1734,14 +2062,15 @@ do_elif (cpp_reader *pfile)
}
ifs->type = T_ELIF;
- /* Only evaluate this if we aren't skipping elses. During
- evaluation, set skipping to false to get lexer warnings. */
+ /* See DR#412: "Only the first group whose control condition
+ evaluates to true (nonzero) is processed; any following groups
+ are skipped and their controlling directives are processed as
+ if they were in a group that is skipped." */
if (ifs->skip_elses)
pfile->state.skipping = 1;
else
{
- pfile->state.skipping = 0;
- pfile->state.skipping = ! _cpp_parse_expr (pfile);
+ pfile->state.skipping = ! _cpp_parse_expr (pfile, false);
ifs->skip_elses = ! pfile->state.skipping;
}
@@ -1763,7 +2092,7 @@ do_endif (cpp_reader *pfile)
{
/* Only check EOL if was not originally skipping. */
if (!ifs->was_skipping && CPP_OPTION (pfile, warn_endif_labels))
- check_eol (pfile);
+ check_eol_endif_labels (pfile);
/* If potential control macro, we go back outside again. */
if (ifs->next == 0 && ifs->mi_cmacro)
@@ -1808,17 +2137,15 @@ push_conditional (cpp_reader *pfile, int skip, int type,
/* Read the tokens of the answer into the macro pool, in a directive
of type TYPE. Only commit the memory if we intend it as permanent
storage, i.e. the #assert case. Returns 0 on success, and sets
- ANSWERP to point to the answer. */
-static int
-parse_answer (cpp_reader *pfile, struct answer **answerp, int type)
+ ANSWERP to point to the answer. PRED_LOC is the location of the
+ predicate. */
+static bool
+parse_answer (cpp_reader *pfile, int type, location_t pred_loc,
+ cpp_macro **answer_ptr)
{
- const cpp_token *paren;
- struct answer *answer;
- unsigned int acount;
-
/* In a conditional, it is legal to not have an open paren. We
should save the following token in this case. */
- paren = cpp_get_token (pfile);
+ const cpp_token *paren = cpp_get_token (pfile);
/* If not a paren, see if we're OK. */
if (paren->type != CPP_OPEN_PAREN)
@@ -1828,22 +2155,26 @@ parse_answer (cpp_reader *pfile, struct answer **answerp, int type)
if (type == T_IF)
{
_cpp_backup_tokens (pfile, 1);
- return 0;
+ return true;
}
/* #unassert with no answer is valid - it removes all answers. */
if (type == T_UNASSERT && paren->type == CPP_EOF)
- return 0;
+ return true;
- cpp_error (pfile, CPP_DL_ERROR, "missing '(' after predicate");
- return 1;
+ cpp_error_with_line (pfile, CPP_DL_ERROR, pred_loc, 0,
+ "missing '(' after predicate");
+ return false;
}
- for (acount = 0;; acount++)
+ cpp_macro *answer = _cpp_new_macro (pfile, cmk_assert,
+ _cpp_reserve_room (pfile, 0,
+ sizeof (cpp_macro)));
+ answer->parm.next = NULL;
+ unsigned count = 0;
+ for (;;)
{
- size_t room_needed;
const cpp_token *token = cpp_get_token (pfile);
- cpp_token *dest;
if (token->type == CPP_CLOSE_PAREN)
break;
@@ -1851,86 +2182,84 @@ parse_answer (cpp_reader *pfile, struct answer **answerp, int type)
if (token->type == CPP_EOF)
{
cpp_error (pfile, CPP_DL_ERROR, "missing ')' to complete answer");
- return 1;
+ return false;
}
- /* struct answer includes the space for one token. */
- room_needed = (sizeof (struct answer) + acount * sizeof (cpp_token));
-
- if (BUFF_ROOM (pfile->a_buff) < room_needed)
- _cpp_extend_buff (pfile, &pfile->a_buff, sizeof (struct answer));
-
- dest = &((struct answer *) BUFF_FRONT (pfile->a_buff))->first[acount];
- *dest = *token;
-
- /* Drop whitespace at start, for answer equivalence purposes. */
- if (acount == 0)
- dest->flags &= ~PREV_WHITE;
+ answer = (cpp_macro *)_cpp_reserve_room
+ (pfile, sizeof (cpp_macro) + count * sizeof (cpp_token),
+ sizeof (cpp_token));
+ answer->exp.tokens[count++] = *token;
}
- if (acount == 0)
+ if (!count)
{
cpp_error (pfile, CPP_DL_ERROR, "predicate's answer is empty");
- return 1;
+ return false;
}
- answer = (struct answer *) BUFF_FRONT (pfile->a_buff);
- answer->count = acount;
- answer->next = NULL;
- *answerp = answer;
+ /* Drop whitespace at start, for answer equivalence purposes. */
+ answer->exp.tokens[0].flags &= ~PREV_WHITE;
- return 0;
+ answer->count = count;
+ *answer_ptr = answer;
+
+ return true;
}
/* Parses an assertion directive of type TYPE, returning a pointer to
- the hash node of the predicate, or 0 on error. If an answer was
- supplied, it is placed in ANSWERP, otherwise it is set to 0. */
+ the hash node of the predicate, or 0 on error. The node is
+ guaranteed to be disjoint from the macro namespace, so can only
+ have type 'NT_VOID'. If an answer was supplied, it is placed in
+ *ANSWER_PTR, which is otherwise set to 0. */
static cpp_hashnode *
-parse_assertion (cpp_reader *pfile, struct answer **answerp, int type)
+parse_assertion (cpp_reader *pfile, int type, cpp_macro **answer_ptr)
{
cpp_hashnode *result = 0;
- const cpp_token *predicate;
/* We don't expand predicates or answers. */
pfile->state.prevent_expansion++;
- *answerp = 0;
- predicate = cpp_get_token (pfile);
+ *answer_ptr = NULL;
+
+ const cpp_token *predicate = cpp_get_token (pfile);
if (predicate->type == CPP_EOF)
cpp_error (pfile, CPP_DL_ERROR, "assertion without predicate");
else if (predicate->type != CPP_NAME)
- cpp_error (pfile, CPP_DL_ERROR, "predicate must be an identifier");
- else if (parse_answer (pfile, answerp, type) == 0)
+ cpp_error_with_line (pfile, CPP_DL_ERROR, predicate->src_loc, 0,
+ "predicate must be an identifier");
+ else if (parse_answer (pfile, type, predicate->src_loc, answer_ptr))
{
- unsigned int len = NODE_LEN (predicate->val.node);
+ unsigned int len = NODE_LEN (predicate->val.node.node);
unsigned char *sym = (unsigned char *) alloca (len + 1);
/* Prefix '#' to get it out of macro namespace. */
sym[0] = '#';
- memcpy (sym + 1, NODE_NAME (predicate->val.node), len);
+ memcpy (sym + 1, NODE_NAME (predicate->val.node.node), len);
result = cpp_lookup (pfile, sym, len + 1);
}
pfile->state.prevent_expansion--;
+
return result;
}
/* Returns a pointer to the pointer to CANDIDATE in the answer chain,
or a pointer to NULL if the answer is not in the chain. */
-static struct answer **
-find_answer (cpp_hashnode *node, const struct answer *candidate)
+static cpp_macro **
+find_answer (cpp_hashnode *node, const cpp_macro *candidate)
{
unsigned int i;
- struct answer **result;
+ cpp_macro **result = NULL;
- for (result = &node->value.answers; *result; result = &(*result)->next)
+ for (result = &node->value.answers; *result; result = &(*result)->parm.next)
{
- struct answer *answer = *result;
+ cpp_macro *answer = *result;
if (answer->count == candidate->count)
{
for (i = 0; i < answer->count; i++)
- if (! _cpp_equiv_tokens (&answer->first[i], &candidate->first[i]))
+ if (!_cpp_equiv_tokens (&answer->exp.tokens[i],
+ &candidate->exp.tokens[i]))
break;
if (i == answer->count)
@@ -1947,18 +2276,18 @@ find_answer (cpp_hashnode *node, const struct answer *candidate)
int
_cpp_test_assertion (cpp_reader *pfile, unsigned int *value)
{
- struct answer *answer;
- cpp_hashnode *node;
-
- node = parse_assertion (pfile, &answer, T_IF);
+ cpp_macro *answer;
+ cpp_hashnode *node = parse_assertion (pfile, T_IF, &answer);
/* For recovery, an erroneous assertion expression is handled as a
failing assertion. */
*value = 0;
if (node)
- *value = (node->type == NT_ASSERTION &&
- (answer == 0 || *find_answer (node, answer) != 0));
+ {
+ if (node->value.answers)
+ *value = !answer || *find_answer (node, answer);
+ }
else if (pfile->cur_token[-1].type == CPP_EOF)
_cpp_backup_tokens (pfile, 1);
@@ -1970,44 +2299,30 @@ _cpp_test_assertion (cpp_reader *pfile, unsigned int *value)
static void
do_assert (cpp_reader *pfile)
{
- struct answer *new_answer;
- cpp_hashnode *node;
+ cpp_macro *answer;
+ cpp_hashnode *node = parse_assertion (pfile, T_ASSERT, &answer);
- node = parse_assertion (pfile, &new_answer, T_ASSERT);
if (node)
{
- size_t answer_size;
-
/* Place the new answer in the answer list. First check there
is not a duplicate. */
- new_answer->next = 0;
- if (node->type == NT_ASSERTION)
+ if (*find_answer (node, answer))
{
- if (*find_answer (node, new_answer))
- {
- cpp_error (pfile, CPP_DL_WARNING, "\"%s\" re-asserted",
- NODE_NAME (node) + 1);
- return;
- }
- new_answer->next = node->value.answers;
+ cpp_error (pfile, CPP_DL_WARNING, "\"%s\" re-asserted",
+ NODE_NAME (node) + 1);
+ return;
}
- answer_size = sizeof (struct answer) + ((new_answer->count - 1)
- * sizeof (cpp_token));
- /* Commit or allocate storage for the object. */
- if (pfile->hash_table->alloc_subobject)
- {
- struct answer *temp_answer = new_answer;
- new_answer = (struct answer *) pfile->hash_table->alloc_subobject
- (answer_size);
- memcpy (new_answer, temp_answer, answer_size);
- }
- else
- BUFF_FRONT (pfile->a_buff) += answer_size;
+ /* Commit or allocate storage for the answer. */
+ answer = (cpp_macro *)_cpp_commit_buff
+ (pfile, sizeof (cpp_macro) - sizeof (cpp_token)
+ + sizeof (cpp_token) * answer->count);
+
+ /* Chain into the list. */
+ answer->parm.next = node->value.answers;
+ node->value.answers = answer;
- node->type = NT_ASSERTION;
- node->value.answers = new_answer;
- check_eol (pfile);
+ check_eol (pfile, false);
}
}
@@ -2015,27 +2330,21 @@ do_assert (cpp_reader *pfile)
static void
do_unassert (cpp_reader *pfile)
{
- cpp_hashnode *node;
- struct answer *answer;
+ cpp_macro *answer;
+ cpp_hashnode *node = parse_assertion (pfile, T_UNASSERT, &answer);
- node = parse_assertion (pfile, &answer, T_UNASSERT);
/* It isn't an error to #unassert something that isn't asserted. */
- if (node && node->type == NT_ASSERTION)
+ if (node)
{
if (answer)
{
- struct answer **p = find_answer (node, answer), *temp;
-
- /* Remove the answer from the list. */
- temp = *p;
- if (temp)
- *p = temp->next;
+ cpp_macro **p = find_answer (node, answer);
- /* Did we free the last answer? */
- if (node->value.answers == 0)
- node->type = NT_VOID;
+ /* Remove the assert from the list. */
+ if (cpp_macro *temp = *p)
+ *p = temp->parm.next;
- check_eol (pfile);
+ check_eol (pfile, false);
}
else
_cpp_free_definition (node);
@@ -2053,7 +2362,8 @@ do_unassert (cpp_reader *pfile)
void
cpp_define (cpp_reader *pfile, const char *str)
{
- char *buf, *p;
+ char *buf;
+ const char *p;
size_t count;
/* Copy the entire option so we can modify it.
@@ -2077,6 +2387,26 @@ cpp_define (cpp_reader *pfile, const char *str)
run_directive (pfile, T_DEFINE, buf, count);
}
+
+/* Use to build macros to be run through cpp_define() as
+ described above.
+ Example: cpp_define_formatted (pfile, "MACRO=%d", value); */
+
+void
+cpp_define_formatted (cpp_reader *pfile, const char *fmt, ...)
+{
+ char *ptr;
+
+ va_list ap;
+ va_start (ap, fmt);
+ ptr = xvasprintf (fmt, ap);
+ va_end (ap);
+
+ cpp_define (pfile, ptr);
+ free (ptr);
+}
+
+
/* Slight variant of the above for use by initialize_builtins. */
void
_cpp_define_builtin (cpp_reader *pfile, const char *str)
@@ -2099,63 +2429,55 @@ cpp_undef (cpp_reader *pfile, const char *macro)
run_directive (pfile, T_UNDEF, buf, len);
}
-/* Like lex_macro_node, but read the input from STR. */
-static cpp_hashnode *
-lex_macro_node_from_str (cpp_reader *pfile, const char *str)
-{
- size_t len = strlen (str);
- uchar *buf = (uchar *) alloca (len + 1);
- cpp_hashnode *node;
-
- memcpy (buf, str, len);
- buf[len] = '\n';
- cpp_push_buffer (pfile, buf, len, true);
- node = lex_macro_node (pfile, true);
- _cpp_pop_buffer (pfile);
-
- return node;
-}
-
-/* If STR is a defined macro, return its definition node, else return NULL. */
-cpp_macro *
-cpp_push_definition (cpp_reader *pfile, const char *str)
-{
- cpp_hashnode *node = lex_macro_node_from_str (pfile, str);
- if (node && node->type == NT_MACRO)
- return node->value.macro;
- else
- return NULL;
-}
-
-/* Replace a previous definition DFN of the macro STR. If DFN is NULL,
- then the macro should be undefined. */
-void
-cpp_pop_definition (cpp_reader *pfile, const char *str, cpp_macro *dfn)
+/* Replace a previous definition DEF of the macro STR. If DEF is NULL,
+ or first element is zero, then the macro should be undefined. */
+static void
+cpp_pop_definition (cpp_reader *pfile, struct def_pragma_macro *c)
{
- cpp_hashnode *node = lex_macro_node_from_str (pfile, str);
+ cpp_hashnode *node = _cpp_lex_identifier (pfile, c->name);
if (node == NULL)
return;
- if (node->type == NT_MACRO)
+ if (pfile->cb.before_define)
+ pfile->cb.before_define (pfile);
+
+ if (cpp_macro_p (node))
{
if (pfile->cb.undef)
pfile->cb.undef (pfile, pfile->directive_line, node);
if (CPP_OPTION (pfile, warn_unused_macros))
_cpp_warn_if_unused_macro (pfile, node, NULL);
+ _cpp_free_definition (node);
}
- if (node->type != NT_VOID)
- _cpp_free_definition (node);
- if (dfn)
- {
- node->type = NT_MACRO;
- node->value.macro = dfn;
- if (! ustrncmp (NODE_NAME (node), DSC ("__STDC_")))
- node->flags |= NODE_WARN;
+ if (c->is_undef)
+ return;
- if (pfile->cb.define)
- pfile->cb.define (pfile, pfile->directive_line, node);
- }
+ {
+ size_t namelen;
+ const uchar *dn;
+ cpp_hashnode *h = NULL;
+ cpp_buffer *nbuf;
+
+ namelen = ustrcspn (c->definition, "( \n");
+ h = cpp_lookup (pfile, c->definition, namelen);
+ dn = c->definition + namelen;
+
+ nbuf = cpp_push_buffer (pfile, dn, ustrchr (dn, '\n') - dn, true);
+ if (nbuf != NULL)
+ {
+ _cpp_clean_line (pfile);
+ nbuf->sysp = 1;
+ if (!_cpp_create_definition (pfile, h))
+ abort ();
+ _cpp_pop_buffer (pfile);
+ }
+ else
+ abort ();
+ h->value.macro->line = c->line;
+ h->value.macro->syshdr = c->syshdr;
+ h->value.macro->used = c->used;
+ }
}
/* Process the string STR as if it appeared as the body of a #assert. */
@@ -2195,13 +2517,6 @@ handle_assertion (cpp_reader *pfile, const char *str, int type)
run_directive (pfile, type, str, count);
}
-/* The number of errors for a given reader. */
-unsigned int
-cpp_errors (cpp_reader *pfile)
-{
- return pfile->errors;
-}
-
/* The options structure. */
cpp_options *
cpp_get_options (cpp_reader *pfile)
@@ -2263,6 +2578,7 @@ _cpp_pop_buffer (cpp_reader *pfile)
cpp_buffer *buffer = pfile->buffer;
struct _cpp_file *inc = buffer->file;
struct if_stack *ifs;
+ const unsigned char *to_free;
/* Walk back up the conditional stack till we reach its level at
entry to this file, issuing error messages. */
@@ -2276,6 +2592,7 @@ _cpp_pop_buffer (cpp_reader *pfile)
/* _cpp_do_file_change expects pfile->buffer to be the new one. */
pfile->buffer = buffer->prev;
+ to_free = buffer->to_free;
free (buffer->notes);
/* Free the buffer object now; we may want to push a new buffer
@@ -2284,10 +2601,12 @@ _cpp_pop_buffer (cpp_reader *pfile)
if (inc)
{
- _cpp_pop_file_buffer (pfile, inc);
+ _cpp_pop_file_buffer (pfile, inc, to_free);
_cpp_do_file_change (pfile, LC_LEAVE, 0, 0, 0);
}
+ else if (to_free)
+ free ((void *)to_free);
}
/* Enter all recognized directives in the hash table. */
@@ -2304,3 +2623,12 @@ _cpp_init_directives (cpp_reader *pfile)
node->directive_index = i;
}
}
+
+/* Extract header file from a bracket include. Parsing starts after '<'.
+ The string is malloced and must be freed by the caller. */
+char *
+_cpp_bracket_include(cpp_reader *pfile)
+{
+ return glue_header_name (pfile);
+}
+