/* Name mangling for the 3.0 -*- C++ -*- ABI.
- Copyright (C) 2000-2017 Free Software Foundation, Inc.
+ Copyright (C) 2000-2020 Free Software Foundation, Inc.
Written by Alex Samuel <samuel@codesourcery.com>
This file is part of GCC.
instantiated outside of the template, and A is the type used
without parameters inside the template. */
#define CLASSTYPE_TEMPLATE_ID_P(NODE) \
- (TYPE_LANG_SPECIFIC (NODE) != NULL \
- && (TREE_CODE (NODE) == BOUND_TEMPLATE_TEMPLATE_PARM \
- || (CLASSTYPE_TEMPLATE_INFO (NODE) != NULL \
- && (PRIMARY_TEMPLATE_P (CLASSTYPE_TI_TEMPLATE (NODE))))))
+ (TREE_CODE (NODE) == BOUND_TEMPLATE_TEMPLATE_PARM \
+ || (CLASS_TYPE_P (NODE) \
+ && CLASSTYPE_TEMPLATE_INFO (NODE) != NULL \
+ && PRIMARY_TEMPLATE_P (CLASSTYPE_TI_TEMPLATE (NODE))))
/* For deciding whether to set G.need_abi_warning, we need to consider both
warn_abi_version and flag_abi_compat_version. */
bool need_abi_warning;
/* True if the mangling will be different in C++17 mode. */
- bool need_cxx1z_warning;
+ bool need_cxx17_warning;
};
static GTY (()) globals G;
static void write_local_name (tree, const tree, const tree);
static void dump_substitution_candidates (void);
static tree mangle_decl_string (const tree);
-static int local_class_index (tree);
static void maybe_check_abi_tags (tree, tree = NULL_TREE, int = 10);
static bool equal_abi_tags (tree, tree);
if (!flag_noexcept_type)
{
- G.need_cxx1z_warning = true;
+ G.need_cxx17_warning = true;
return;
}
else
node = cp_build_qualified_type (TYPE_MAIN_VARIANT (node),
cp_type_quals (node));
- if (TREE_CODE (node) == FUNCTION_TYPE
- || TREE_CODE (node) == METHOD_TYPE)
+ if (FUNC_OR_METHOD_TYPE_P (node))
{
node = build_ref_qualified_type (node, type_memfn_rqual (orig));
tree r = canonical_eh_spec (TYPE_RAISES_EXCEPTIONS (orig));
else if (template_type_parameter_p (decl))
/* template type parms have no mangling context. */
return NULL_TREE;
- return CP_DECL_CONTEXT (decl);
+
+ tcontext = CP_DECL_CONTEXT (decl);
+
+ /* Ignore the artificial declare reduction functions. */
+ if (tcontext
+ && TREE_CODE (tcontext) == FUNCTION_DECL
+ && DECL_OMP_DECLARE_REDUCTION_P (tcontext))
+ return decl_mangling_context (tcontext);
+
+ return tcontext;
}
/* <name> ::= <unscoped-name>
add_substitution (substitution);
}
+/* As the list of identifiers for the structured binding declaration
+ DECL is likely gone, try to recover the DC <source-name>+ E portion
+ from its mangled name. Return pointer to the DC and set len to
+ the length up to and including the terminating E. On failure
+ return NULL. */
+
+static const char *
+find_decomp_unqualified_name (tree decl, size_t *len)
+{
+ const char *p = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl));
+ const char *end = p + IDENTIFIER_LENGTH (DECL_ASSEMBLER_NAME (decl));
+ bool nested = false;
+ if (strncmp (p, "_Z", 2))
+ return NULL;
+ p += 2;
+ if (!strncmp (p, "St", 2))
+ p += 2;
+ else if (*p == 'N')
+ {
+ nested = true;
+ ++p;
+ while (ISDIGIT (p[0]))
+ {
+ char *e;
+ long num = strtol (p, &e, 10);
+ if (num >= 1 && num < end - e)
+ p = e + num;
+ else
+ break;
+ }
+ }
+ if (strncmp (p, "DC", 2))
+ return NULL;
+ if (nested)
+ {
+ if (end[-1] != 'E')
+ return NULL;
+ --end;
+ }
+ if (end[-1] != 'E')
+ return NULL;
+ *len = end - p;
+ return p;
+}
+
/* We don't need to handle thunks, vtables, or VTTs here. Those are
mangled through special entry points.
static void
write_unqualified_id (tree identifier)
{
- if (IDENTIFIER_TYPENAME_P (identifier))
+ if (IDENTIFIER_CONV_OP_P (identifier))
write_conversion_operator_name (TREE_TYPE (identifier));
- else if (IDENTIFIER_OPNAME_P (identifier))
+ else if (IDENTIFIER_OVL_OP_P (identifier))
{
- int i;
- const char *mangled_name = NULL;
-
- /* Unfortunately, there is no easy way to go from the
- name of the operator back to the corresponding tree
- code. */
- for (i = 0; i < MAX_TREE_CODES; ++i)
- if (operator_name_info[i].identifier == identifier)
- {
- /* The ABI says that we prefer binary operator
- names to unary operator names. */
- if (operator_name_info[i].arity == 2)
- {
- mangled_name = operator_name_info[i].mangled_name;
- break;
- }
- else if (!mangled_name)
- mangled_name = operator_name_info[i].mangled_name;
- }
- else if (assignment_operator_name_info[i].identifier
- == identifier)
- {
- mangled_name
- = assignment_operator_name_info[i].mangled_name;
- break;
- }
- write_string (mangled_name);
+ const ovl_op_info_t *ovl_op = IDENTIFIER_OVL_OP_INFO (identifier);
+ write_string (ovl_op->mangled_name);
}
else if (UDLIT_OPER_P (identifier))
write_literal_operator_name (identifier);
{
found = true;
gcc_assert (DECL_ASSEMBLER_NAME_SET_P (decl));
- write_source_name (DECL_ASSEMBLER_NAME (decl));
+ const char *decomp_str = NULL;
+ size_t decomp_len = 0;
+ if (VAR_P (decl)
+ && DECL_DECOMPOSITION_P (decl)
+ && DECL_NAME (decl) == NULL_TREE
+ && DECL_NAMESPACE_SCOPE_P (decl))
+ decomp_str = find_decomp_unqualified_name (decl, &decomp_len);
+ if (decomp_str)
+ write_chars (decomp_str, decomp_len);
+ else
+ write_source_name (DECL_ASSEMBLER_NAME (decl));
}
else if (DECL_DECLARES_FUNCTION_P (decl))
{
type = TREE_TYPE (fn_type);
}
else if (FNDECL_USED_AUTO (decl))
- type = (DECL_STRUCT_FUNCTION (decl)->language
- ->x_auto_return_pattern);
+ type = DECL_SAVED_AUTO_RETURN_TYPE (decl);
else
type = DECL_CONV_FN_TYPE (decl);
write_conversion_operator_name (type);
}
else if (DECL_OVERLOADED_OPERATOR_P (decl))
{
- operator_name_info_t *oni;
- if (DECL_ASSIGNMENT_OPERATOR_P (decl))
- oni = assignment_operator_name_info;
- else
- oni = operator_name_info;
-
- write_string (oni[DECL_OVERLOADED_OPERATOR_P (decl)].mangled_name);
+ const char *mangled_name
+ = (ovl_op_info[DECL_ASSIGNMENT_OPERATOR_P (decl)]
+ [DECL_OVERLOADED_OPERATOR_CODE_RAW (decl)].mangled_name);
+ write_string (mangled_name);
}
else if (UDLIT_OPER_P (DECL_NAME (decl)))
write_literal_operator_name (DECL_NAME (decl));
{
MANGLE_TRACE_TREE ("source-name", identifier);
- /* Never write the whole template-id name including the template
- arguments; we only want the template name. */
- if (IDENTIFIER_TEMPLATE (identifier))
- identifier = IDENTIFIER_TEMPLATE (identifier);
-
write_unsigned_number (IDENTIFIER_LENGTH (identifier));
write_identifier (IDENTIFIER_POINTER (identifier));
}
release_tree_vector (vec);
}
-/* Simplified unique_ptr clone to release a tree vec on exit. */
-
-struct releasing_vec
-{
- typedef vec<tree, va_gc> vec_t;
-
- releasing_vec (vec_t *v): v(v) { }
- releasing_vec (): v(make_tree_vector ()) { }
-
- vec_t &operator* () const { return *v; }
- vec_t *operator-> () const { return v; }
- vec_t *get () const { return v; }
- operator vec_t *() const { return v; }
- tree& operator[] (unsigned i) const { return (*v)[i]; }
-
- ~releasing_vec() { release_tree_vector (v); }
-private:
- vec_t *v;
-};
-
/* True iff the TREE_LISTS T1 and T2 of ABI tags are equivalent. */
static bool
++index;
}
+ if (seen_error ())
+ return -1;
+
gcc_unreachable ();
}
MANGLE_TRACE_TREE ("unnamed-type-name", type);
if (TYPE_FUNCTION_SCOPE_P (type))
- discriminator = local_class_index (type);
+ discriminator = discriminator_for_local_entity (TYPE_NAME (type));
else if (TYPE_CLASS_SCOPE_P (type))
discriminator = nested_anon_class_index (type);
else
type = c_common_signed_or_unsigned_type (1, TREE_TYPE (cst));
base = build_int_cstu (type, chunk);
- n = wide_int_to_tree (type, cst);
+ n = wide_int_to_tree (type, wi::to_wide (cst));
if (sign < 0)
{
int i, limit, dir;
tree type = TREE_TYPE (value);
- int words = GET_MODE_BITSIZE (TYPE_MODE (type)) / 32;
+ int words = GET_MODE_BITSIZE (SCALAR_FLOAT_TYPE_MODE (type)) / 32;
real_to_target (target_real, &TREE_REAL_CST (value),
TYPE_MODE (type));
}
}
-/* Scan the vector of local classes and return how many others with the
- same name (or same no name) and context precede ENTITY. */
-
-static int
-local_class_index (tree entity)
-{
- int ix, discriminator = 0;
- tree name = (TYPE_UNNAMED_P (entity) ? NULL_TREE
- : TYPE_IDENTIFIER (entity));
- tree ctx = TYPE_CONTEXT (entity);
- for (ix = 0; ; ix++)
- {
- tree type = (*local_classes)[ix];
- if (type == entity)
- return discriminator;
- if (TYPE_CONTEXT (type) == ctx
- && (name ? TYPE_IDENTIFIER (type) == name
- : TYPE_UNNAMED_P (type)))
- ++discriminator;
- }
- gcc_unreachable ();
-}
-
/* Return the discriminator for ENTITY appearing inside
- FUNCTION. The discriminator is the lexical ordinal of VAR among
- entities with the same name in the same FUNCTION. */
+ FUNCTION. The discriminator is the lexical ordinal of VAR or TYPE among
+ entities with the same name and kind in the same FUNCTION. */
static int
discriminator_for_local_entity (tree entity)
{
- if (DECL_DISCRIMINATOR_P (entity))
+ if (!DECL_LANG_SPECIFIC (entity))
{
- if (DECL_DISCRIMINATOR_SET_P (entity))
- return DECL_DISCRIMINATOR (entity);
- else
- /* The first entity with a particular name doesn't get
- DECL_DISCRIMINATOR set up. */
- return 0;
- }
- else if (TREE_CODE (entity) == TYPE_DECL)
- {
- /* Scan the list of local classes. */
- entity = TREE_TYPE (entity);
-
- /* Lambdas and unnamed types have their own discriminators. */
- if (LAMBDA_TYPE_P (entity) || TYPE_UNNAMED_P (entity))
- return 0;
-
- return local_class_index (entity);
+ /* Some decls, like __FUNCTION__, don't need a discriminator. */
+ gcc_checking_assert (DECL_ARTIFICIAL (entity));
+ return 0;
}
+ else if (tree disc = DECL_DISCRIMINATOR (entity))
+ return TREE_INT_CST_LOW (disc);
else
- gcc_unreachable ();
+ /* The first entity with a particular name doesn't get
+ DECL_DISCRIMINATOR set up. */
+ return 0;
}
/* Return the discriminator for STRING, a string literal used inside
from <local-name>, so it doesn't try to process the enclosing
function scope again. */
write_name (entity, /*ignore_local_scope=*/1);
- write_discriminator (discriminator_for_local_entity (local_entity));
+ if (DECL_DISCRIMINATOR_P (local_entity)
+ && !(TREE_CODE (local_entity) == TYPE_DECL
+ && TYPE_ANON_P (TREE_TYPE (local_entity))))
+ write_discriminator (discriminator_for_local_entity (local_entity));
}
}
t = cp_build_type_attribute_variant (t, attrs);
}
gcc_assert (t != type);
- if (TREE_CODE (t) == FUNCTION_TYPE
- || TREE_CODE (t) == METHOD_TYPE)
+ if (FUNC_OR_METHOD_TYPE_P (t))
{
t = build_ref_qualified_type (t, type_memfn_rqual (type));
+ if (flag_noexcept_type)
+ {
+ tree r = TYPE_RAISES_EXCEPTIONS (type);
+ t = build_exception_variant (t, r);
+ }
if (abi_version_at_least (8)
|| type == TYPE_MAIN_VARIANT (type))
/* Avoid adding the unqualified function type as a substitution. */
/* See through any typedefs. */
type = TYPE_MAIN_VARIANT (type);
- if (TREE_CODE (type) == FUNCTION_TYPE
- || TREE_CODE (type) == METHOD_TYPE)
- {
- type = build_ref_qualified_type (type, type_memfn_rqual (type_orig));
- type = build_exception_variant (type,
- TYPE_RAISES_EXCEPTIONS (type_orig));
- }
+ if (FUNC_OR_METHOD_TYPE_P (type))
+ type = cxx_copy_lang_qualifiers (type, type_orig);
/* According to the C++ ABI, some library classes are passed the
same as the scalar type of their single member and use the same
write_string ("Dv");
/* Non-constant vector size would be encoded with
_ expression, but we don't support that yet. */
- write_unsigned_number (TYPE_VECTOR_SUBPARTS (type));
+ write_unsigned_number (TYPE_VECTOR_SUBPARTS (type)
+ .to_constant ());
write_char ('_');
}
else
break;
case TYPEOF_TYPE:
- sorry ("mangling typeof, use decltype instead");
+ sorry ("mangling %<typeof%>, use %<decltype%> instead");
break;
case UNDERLYING_TYPE:
- sorry ("mangling __underlying_type");
+ sorry ("mangling %<__underlying_type%>");
break;
case LANG_TYPE:
break;
case INTEGER_TYPE:
- /* TYPE may still be wchar_t, char16_t, or char32_t, since that
+ /* TYPE may still be wchar_t, char8_t, char16_t, or char32_t, since that
isn't in integer_type_nodes. */
if (type == wchar_type_node)
write_char ('w');
+ else if (type == char8_type_node)
+ write_string ("Du");
else if (type == char16_type_node)
write_string ("Ds");
else if (type == char32_type_node)
static void
write_member_name (tree member)
{
- if (abi_version_at_least (11) && IDENTIFIER_OPNAME_P (member))
+ if (identifier_p (member))
{
- write_string ("on");
- if (abi_warn_or_compat_version_crosses (11))
- G.need_abi_warning = 1;
+ if (abi_version_at_least (11) && IDENTIFIER_ANY_OP_P (member))
+ {
+ write_string ("on");
+ if (abi_warn_or_compat_version_crosses (11))
+ G.need_abi_warning = 1;
+ }
+ write_unqualified_id (member);
}
- if (identifier_p (member))
- write_unqualified_id (member);
else if (DECL_P (member))
write_unqualified_name (member);
else if (TREE_CODE (member) == TEMPLATE_ID_EXPR)
{
tree name = TREE_OPERAND (member, 0);
- if (TREE_CODE (name) == OVERLOAD)
- name = OVL_FUNCTION (name);
+ name = OVL_FIRST (name);
write_member_name (name);
write_template_args (TREE_OPERAND (member, 1));
}
{
enum tree_code code = TREE_CODE (expr);
+ if (TREE_CODE (expr) == TARGET_EXPR)
+ {
+ expr = TARGET_EXPR_INITIAL (expr);
+ code = TREE_CODE (expr);
+ }
+
/* Skip NOP_EXPR and CONVERT_EXPR. They can occur when (say) a pointer
argument is converted (via qualification conversions) to another type. */
while (CONVERT_EXPR_CODE_P (code)
+ || location_wrapper_p (expr)
/* Parentheses aren't mangled. */
|| code == PAREN_EXPR
- || TREE_CODE (expr) == NON_LVALUE_EXPR)
+ || code == NON_LVALUE_EXPR
+ || (code == VIEW_CONVERT_EXPR
+ && TREE_CODE (TREE_OPERAND (expr, 0)) == TEMPLATE_PARM_INDEX))
{
expr = TREE_OPERAND (expr, 0);
code = TREE_CODE (expr);
write_template_arg_literal (expr);
else if (code == PARM_DECL && DECL_ARTIFICIAL (expr))
{
- gcc_assert (!strcmp ("this", IDENTIFIER_POINTER (DECL_NAME (expr))));
+ gcc_assert (id_equal (DECL_NAME (expr), "this"));
write_string ("fpT");
}
else if (code == PARM_DECL)
{
scope = TREE_OPERAND (expr, 0);
member = TREE_OPERAND (expr, 1);
+ if (BASELINK_P (member))
+ member = BASELINK_FUNCTIONS (member);
}
else
{
}
else if (INDIRECT_REF_P (expr)
&& TREE_TYPE (TREE_OPERAND (expr, 0))
- && TREE_CODE (TREE_TYPE (TREE_OPERAND (expr, 0))) == REFERENCE_TYPE)
+ && TYPE_REF_P (TREE_TYPE (TREE_OPERAND (expr, 0))))
{
write_expression (TREE_OPERAND (expr, 0));
}
/* An operator name appearing as a dependent name needs to be
specially marked to disambiguate between a use of the operator
name and a use of the operator in an expression. */
- if (IDENTIFIER_OPNAME_P (expr))
+ if (IDENTIFIER_ANY_OP_P (expr))
write_string ("on");
write_unqualified_id (expr);
}
else if (TREE_CODE (expr) == TEMPLATE_ID_EXPR)
{
tree fn = TREE_OPERAND (expr, 0);
- if (is_overloaded_fn (fn))
- fn = get_first_fn (fn);
- if (DECL_P (fn))
- fn = DECL_NAME (fn);
- if (IDENTIFIER_OPNAME_P (fn))
+ fn = OVL_NAME (fn);
+ if (IDENTIFIER_ANY_OP_P (fn))
write_string ("on");
write_unqualified_id (fn);
write_template_args (TREE_OPERAND (expr, 1));
else if (TREE_CODE (expr) == MODOP_EXPR)
{
enum tree_code subop = TREE_CODE (TREE_OPERAND (expr, 1));
- const char *name = (assignment_operator_name_info[(int) subop]
- .mangled_name);
+ const char *name = OVL_OP_INFO (true, subop)->mangled_name;
+
write_string (name);
write_expression (TREE_OPERAND (expr, 0));
write_expression (TREE_OPERAND (expr, 2));
if (NEW_EXPR_USE_GLOBAL (expr))
write_string ("gs");
- write_string (operator_name_info[(int) code].mangled_name);
+ write_string (OVL_OP_INFO (false, code)->mangled_name);
for (t = placement; t; t = TREE_CHAIN (t))
write_expression (TREE_VALUE (t));
if (DELETE_EXPR_USE_GLOBAL (expr))
write_string ("gs");
- write_string (operator_name_info[(int) code].mangled_name);
+ write_string (OVL_OP_INFO (false, code)->mangled_name);
write_expression (TREE_OPERAND (expr, 0));
}
}
else if (code == CONSTRUCTOR)
{
- vec<constructor_elt, va_gc> *elts = CONSTRUCTOR_ELTS (expr);
- unsigned i; tree val;
+ bool braced_init = BRACE_ENCLOSED_INITIALIZER_P (expr);
+ tree etype = TREE_TYPE (expr);
- if (BRACE_ENCLOSED_INITIALIZER_P (expr))
+ if (braced_init)
write_string ("il");
else
{
write_string ("tl");
- write_type (TREE_TYPE (expr));
+ write_type (etype);
+ }
+
+ if (!initializer_zerop (expr) || !trivial_type_p (etype))
+ {
+ /* Convert braced initializer lists to STRING_CSTs so that
+ A<"Foo"> mangles the same as A<{'F', 'o', 'o', 0}> while
+ still using the latter mangling for strings that
+ originated as braced initializer lists. */
+ expr = braced_lists_to_strings (etype, expr);
+
+ if (TREE_CODE (expr) == CONSTRUCTOR)
+ {
+ vec<constructor_elt, va_gc> *elts = CONSTRUCTOR_ELTS (expr);
+ unsigned last_nonzero = -1, i;
+ tree val;
+
+ FOR_EACH_CONSTRUCTOR_VALUE (elts, i, val)
+ if (!initializer_zerop (val))
+ last_nonzero = i;
+
+ FOR_EACH_CONSTRUCTOR_VALUE (elts, i, val)
+ {
+ if (i > last_nonzero)
+ break;
+ write_expression (val);
+ }
+ }
+ else
+ {
+ gcc_assert (TREE_CODE (expr) == STRING_CST);
+ write_expression (expr);
+ }
}
- FOR_EACH_CONSTRUCTOR_VALUE (elts, i, val)
- write_expression (val);
+ write_char ('E');
+ }
+ else if (code == LAMBDA_EXPR)
+ {
+ /* [temp.over.link] Two lambda-expressions are never considered
+ equivalent.
+
+ So just use the closure type mangling. */
+ write_string ("tl");
+ write_type (LAMBDA_EXPR_CLOSURE (expr));
write_char ('E');
}
else if (dependent_name (expr))
don't actually want to output a mangling code for the `&'. */
if (TREE_CODE (expr) == ADDR_EXPR
&& TREE_TYPE (expr)
- && TREE_CODE (TREE_TYPE (expr)) == REFERENCE_TYPE)
+ && TYPE_REF_P (TREE_TYPE (expr)))
{
expr = TREE_OPERAND (expr, 0);
if (DECL_P (expr))
if (TREE_CODE (ob) == ARROW_EXPR)
{
- write_string (operator_name_info[(int)code].mangled_name);
+ write_string (OVL_OP_INFO (false, code)->mangled_name);
ob = TREE_OPERAND (ob, 0);
write_expression (ob);
}
}
/* If it wasn't any of those, recursively expand the expression. */
- name = operator_name_info[(int) code].mangled_name;
+ name = OVL_OP_INFO (false, code)->mangled_name;
/* We used to mangle const_cast and static_cast like a C cast. */
if (code == CONST_CAST_EXPR
if (abi_warn_or_compat_version_crosses (6))
G.need_abi_warning = 1;
if (!abi_version_at_least (6))
- name = operator_name_info[CAST_EXPR].mangled_name;
+ name = OVL_OP_INFO (false, CAST_EXPR)->mangled_name;
}
if (name == NULL)
/* Mangle a dependent name as the name, not whatever happens to
be the first function in the overload set. */
- if ((TREE_CODE (fn) == FUNCTION_DECL
- || TREE_CODE (fn) == OVERLOAD)
+ if (OVL_P (fn)
&& type_dependent_expression_p_push (expr))
- fn = DECL_NAME (get_first_fn (fn));
+ fn = OVL_NAME (fn);
write_expression (fn);
}
if (i == 0)
{
int fcode = TREE_INT_CST_LOW (operand);
- write_string (operator_name_info[fcode].mangled_name);
+ write_string (OVL_OP_INFO (false, fcode)->mangled_name);
continue;
}
else if (code == BINARY_LEFT_FOLD_EXPR)
static void
write_template_arg_literal (const tree value)
{
- write_char ('L');
- write_type (TREE_TYPE (value));
+ if (TREE_CODE (value) == STRING_CST)
+ /* Temporarily mangle strings as braced initializer lists. */
+ write_string ("tl");
+ else
+ write_char ('L');
+
+ tree valtype = TREE_TYPE (value);
+ write_type (valtype);
/* Write a null member pointer value as (type)0, regardless of its
real representation. */
case INTEGER_CST:
gcc_assert (!same_type_p (TREE_TYPE (value), boolean_type_node)
|| integer_zerop (value) || integer_onep (value));
- write_integer_cst (value);
+ if (!(abi_version_at_least (14)
+ && NULLPTR_TYPE_P (TREE_TYPE (value))))
+ write_integer_cst (value);
break;
case REAL_CST:
break;
case STRING_CST:
- sorry ("string literal in function template signature");
- break;
+ {
+ /* Mangle strings the same as braced initializer lists. */
+ unsigned n = TREE_STRING_LENGTH (value);
+ const char *str = TREE_STRING_POINTER (value);
+
+ /* Count the number of trailing nuls and subtract them from
+ STRSIZE because they don't need to be mangled. */
+ for (const char *p = str + n - 1; ; --p)
+ {
+ if (*p || p == str)
+ {
+ n -= str + n - !!*p - p;
+ break;
+ }
+ }
+ tree eltype = TREE_TYPE (valtype);
+ for (const char *p = str; n--; ++p)
+ {
+ write_char ('L');
+ write_type (eltype);
+ write_unsigned_number (*(const unsigned char*)p);
+ write_string ("E");
+ }
+ break;
+ }
default:
gcc_unreachable ();
}
}
+ if (template_parm_object_p (node))
+ /* We want to mangle the argument, not the var we stored it in. */
+ node = DECL_INITIAL (node);
+
+ /* Strip a conversion added by convert_nontype_argument. */
+ if (TREE_CODE (node) == IMPLICIT_CONV_EXPR)
+ node = TREE_OPERAND (node, 0);
if (REFERENCE_REF_P (node))
node = TREE_OPERAND (node, 0);
if (TREE_CODE (node) == NOP_EXPR
- && TREE_CODE (TREE_TYPE (node)) == REFERENCE_TYPE)
+ && TYPE_REF_P (TREE_TYPE (node)))
{
/* Template parameters can be of reference type. To maintain
internal consistency, such arguments use a conversion from
{
G.entity = entity;
G.need_abi_warning = false;
- G.need_cxx1z_warning = false;
+ G.need_cxx17_warning = false;
obstack_free (&name_obstack, name_base);
mangle_obstack = &name_obstack;
name_base = obstack_alloc (&name_obstack, 0);
mangle_decl_string (const tree decl)
{
tree result;
- location_t saved_loc = input_location;
tree saved_fn = NULL_TREE;
bool template_p = false;
if (DECL_LANG_SPECIFIC (decl) && DECL_USE_TEMPLATE (decl))
{
struct tinst_level *tl = current_instantiation ();
- if ((!tl || tl->decl != decl)
+ if ((!tl || tl->maybe_get_node () != decl)
&& push_tinst_level (decl))
{
template_p = true;
current_function_decl = NULL_TREE;
}
}
- input_location = DECL_SOURCE_LOCATION (decl);
+ iloc_sentinel ils (DECL_SOURCE_LOCATION (decl));
start_mangling (decl);
pop_tinst_level ();
current_function_decl = saved_fn;
}
- input_location = saved_loc;
return result;
}
return targetm.mangle_decl_assembler_name (decl, id);
}
-/* If DECL is an implicit mangling alias, return its symtab node; otherwise
- return NULL. */
-
-static symtab_node *
-decl_implicit_alias_p (tree decl)
-{
- if (DECL_P (decl) && DECL_ARTIFICIAL (decl)
- && DECL_IGNORED_P (decl)
- && (TREE_CODE (decl) == FUNCTION_DECL
- || (VAR_P (decl) && TREE_STATIC (decl))))
- {
- symtab_node *n = symtab_node::get (decl);
- if (n && n->cpp_implicit_alias)
- return n;
- }
- return NULL;
-}
-
-/* If DECL is a mangling alias, remove it from the symbol table and return
- true; otherwise return false. */
-
-bool
-maybe_remove_implicit_alias (tree decl)
-{
- if (symtab_node *n = decl_implicit_alias_p (decl))
- {
- n->remove();
- return true;
- }
- return false;
-}
-
/* Create an identifier for the external mangled name of DECL. */
void
}
SET_DECL_ASSEMBLER_NAME (decl, id);
- if (G.need_cxx1z_warning
+ if (G.need_cxx17_warning
&& (TREE_PUBLIC (decl) || DECL_REALLY_EXTERN (decl)))
- warning_at (DECL_SOURCE_LOCATION (decl), OPT_Wc__1z_compat,
+ warning_at (DECL_SOURCE_LOCATION (decl), OPT_Wnoexcept_type,
"mangled name for %qD will change in C++17 because the "
"exception specification is part of a function type",
decl);
if (id != DECL_NAME (decl)
/* Don't do this for a fake symbol we aren't going to emit anyway. */
&& TREE_CODE (decl) != TYPE_DECL
- && !DECL_MAYBE_IN_CHARGE_CONSTRUCTOR_P (decl)
- && !DECL_MAYBE_IN_CHARGE_DESTRUCTOR_P (decl))
+ && !DECL_MAYBE_IN_CHARGE_CDTOR_P (decl))
{
int save_ver = flag_abi_version;
tree id2 = NULL_TREE;
if (!DECL_REALLY_EXTERN (decl))
{
- bool set = false;
-
- /* Check IDENTIFIER_GLOBAL_VALUE before setting to avoid redundant
- errors from multiple definitions. */
- tree d = IDENTIFIER_GLOBAL_VALUE (id);
- if (!d || decl_implicit_alias_p (d))
- {
- set = true;
- SET_IDENTIFIER_GLOBAL_VALUE (id, decl);
- }
+ record_mangling (decl, G.need_abi_warning);
if (!G.need_abi_warning)
return;
- /* If the mangling will change in the future, emit an alias with the
- future mangled name for forward-compatibility. */
- if (!set)
- {
- SET_IDENTIFIER_GLOBAL_VALUE (id, decl);
- inform (DECL_SOURCE_LOCATION (decl), "a later -fabi-version= (or "
- "=0) avoids this error with a change in mangling");
- }
-
flag_abi_version = flag_abi_compat_version;
id2 = mangle_decl_string (decl);
id2 = targetm.mangle_decl_assembler_name (decl, id2);
if (warn_abi)
{
+ const char fabi_version[] = "-fabi-version";
+
if (flag_abi_compat_version != warn_abi_version
|| id2 == NULL_TREE)
{
&& abi_version_at_least (warn_abi_version))
warning_at (DECL_SOURCE_LOCATION (G.entity), OPT_Wabi,
"the mangled name of %qD changed between "
- "-fabi-version=%d (%D) and -fabi-version=%d (%D)",
- G.entity, warn_abi_version, id2,
- save_ver, id);
+ "%<%s=%d%> (%qD) and %<%s=%d%> (%qD)",
+ G.entity, fabi_version, warn_abi_version, id2,
+ fabi_version, save_ver, id);
else
warning_at (DECL_SOURCE_LOCATION (G.entity), OPT_Wabi,
"the mangled name of %qD changes between "
- "-fabi-version=%d (%D) and -fabi-version=%d (%D)",
- G.entity, save_ver, id,
- warn_abi_version, id2);
+ "%<%s=%d%> (%qD) and %<%s=%d%> (%qD)",
+ G.entity, fabi_version, save_ver, id,
+ fabi_version, warn_abi_version, id2);
}
flag_abi_version = save_ver;
return result;
}
-struct conv_type_hasher : ggc_ptr_hash<tree_node>
-{
- static hashval_t hash (tree);
- static bool equal (tree, tree);
-};
-
-/* This hash table maps TYPEs to the IDENTIFIER for a conversion
- operator to TYPE. The nodes are IDENTIFIERs whose TREE_TYPE is the
- TYPE. */
-
-static GTY (()) hash_table<conv_type_hasher> *conv_type_names;
-
-/* Hash a node (VAL1) in the table. */
-
-hashval_t
-conv_type_hasher::hash (tree val)
-{
- return (hashval_t) TYPE_UID (TREE_TYPE (val));
-}
-
-/* Compare VAL1 (a node in the table) with VAL2 (a TYPE). */
-
-bool
-conv_type_hasher::equal (tree val1, tree val2)
-{
- return TREE_TYPE (val1) == val2;
-}
-
-/* Return an identifier for the mangled unqualified name for a
- conversion operator to TYPE. This mangling is not specified by the
- ABI spec; it is only used internally. */
-
-tree
-mangle_conv_op_name_for_type (const tree type)
-{
- tree *slot;
- tree identifier;
-
- if (type == error_mark_node)
- return error_mark_node;
-
- if (conv_type_names == NULL)
- conv_type_names = hash_table<conv_type_hasher>::create_ggc (31);
-
- slot = conv_type_names->find_slot_with_hash (type,
- (hashval_t) TYPE_UID (type),
- INSERT);
- identifier = *slot;
- if (!identifier)
- {
- char buffer[64];
-
- /* Create a unique name corresponding to TYPE. */
- sprintf (buffer, "operator %lu",
- (unsigned long) conv_type_names->elements ());
- identifier = get_identifier (buffer);
- *slot = identifier;
-
- /* Hang TYPE off the identifier so it can be found easily later
- when performing conversions. */
- TREE_TYPE (identifier) = type;
-
- /* Set bits on the identifier so we know later it's a conversion. */
- IDENTIFIER_OPNAME_P (identifier) = 1;
- IDENTIFIER_TYPENAME_P (identifier) = 1;
- }
-
- return identifier;
-}
-
/* Handle ABI backwards compatibility for past bugs where we didn't call
check_abi_tags in places where it's needed: call check_abi_tags and warn if
it makes a difference. If FOR_DECL is non-null, it's the declaration
if (for_decl && DECL_THUNK_P (for_decl))
warning_at (DECL_SOURCE_LOCATION (t), OPT_Wabi,
"the mangled name of a thunk for %qD changes between "
- "-fabi-version=%d and -fabi-version=%d",
+ "%<-fabi-version=%d%> and %<-fabi-version=%d%>",
t, flag_abi_version, warn_abi_version);
else if (for_decl)
warning_at (DECL_SOURCE_LOCATION (for_decl), OPT_Wabi,
"the mangled name of %qD changes between "
- "-fabi-version=%d and -fabi-version=%d",
+ "%<-fabi-version=%d%> and %<-fabi-version=%d%>",
for_decl, flag_abi_version, warn_abi_version);
else
warning_at (DECL_SOURCE_LOCATION (t), OPT_Wabi,
"the mangled name of the initialization guard variable "
- "for %qD changes between -fabi-version=%d and "
- "-fabi-version=%d",
+ "for %qD changes between %<-fabi-version=%d%> and "
+ "%<-fabi-version=%d%>",
t, flag_abi_version, warn_abi_version);
}
}
}
/* Return an identifier for the name of a temporary variable used to
- initialize a static reference. This isn't part of the ABI, but we might
- as well call them something readable. */
-
-static GTY(()) int temp_count;
+ initialize a static reference. This is now part of the ABI. */
tree
mangle_ref_init_variable (const tree variable)
write_name (variable, /*ignore_local_scope=*/0);
/* Avoid name clashes with aggregate initialization of multiple
references at once. */
- write_unsigned_number (temp_count++);
+ write_compact_number (current_ref_temp_count++);
+ return finish_mangling_get_identifier ();
+}
+
+/* Return an identifier for the mangled name of a C++20 template parameter
+ object for template argument EXPR. */
+
+tree
+mangle_template_parm_object (tree expr)
+{
+ start_mangling (expr);
+ write_string ("_ZTAX");
+ write_expression (expr);
+ write_char ('E');
return finish_mangling_get_identifier ();
}
\f
projects / thirdparty / gcc.git / blobdiff