--- /dev/null
+/* Check system header files for ISO 9899:1990 (ISO C) compliance.
+ Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Jens Schweikhardt <schweikh@noc.dfn.de>, 1996.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License
+ as published by the Free Software Foundation; either version 2 of
+ the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be
+ useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If
+ not, write to the Free Software Foundation, Inc., 59 Temple Place -
+ Suite 330, Boston, MA 02111-1307, USA. */
+
+/* This is a simple minded program that tries to find illegal macro
+ definitions in system header files. Illegal macro definitions are
+ those not from the implementation namespace (i.e. not starting with
+ an underscore) or not matching any identifier mandated by The
+ Standard. Some common macro names are considered okay, e.g. all those
+ beginning with E (which may be defined in <errno.h>) or ending in
+ _MAX. See the arrays prefix[] and suffix[] below for details.
+
+ In a compliant implementation no other macros can be defined, because
+ you could write strictly conforming programs that may fail to compile
+ due to syntax errors: suppose <stdio.h> defines PIPE_BUF, then the
+ conforming
+
+ #include <assert.h>
+ #include <stdio.h> <- or where the bogus macro is defined
+ #include <string.h>
+ #define STR(x) #x
+ #define XSTR(x) STR(x)
+ int main (void)
+ {
+ int PIPE_BUF = 0;
+ assert (strcmp ("PIPE_BUF", XSTR (PIPE_BUF)) == 0);
+ return 0;
+ }
+
+ is expected to compile and meet the assertion. If it does not, your
+ compiler compiles some other language than Standard C.
+
+ REQUIREMENTS:
+ This program calls gcc to get the list of defined macros. If you
+ don't have gcc you're probably out of luck unless your compiler or
+ preprocessor has something similar to gcc's -dM option. Tune
+ PRINT_MACROS in this case. This program assumes headers are found
+ under /usr/include and that there is a writable /tmp directory.
+ Tune SYSTEM_INCLUDE and TMPFILE if your system differs.
+ #define BROKEN_SYSTEM if system(NULL) bombs -- one more violation
+ of ISO C, by the way.
+
+ OUTPUT:
+ Each header file name is printed, followed by illegal macro names
+ and their definition. For the above example, you would see
+ ...
+ /usr/include/stdio.h
+ #define PIPE_BUF 5120
+ ...
+ If your implementation does not yet incorporate Amendment 1 you
+ will see messages about iso646.h, wctype.h and wchar.h not being
+ found. */
+
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE 1
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define TMPFILE "/tmp/macros"
+#define HEADER_MAX 256
+
+/* ISO C header names including Amendment 1 (without ".h" suffix). */
+static char *header[] =
+{
+ "assert", "ctype", "errno", "float", "iso646", "limits", "locale",
+ "math", "setjmp", "signal", "stdarg", "stddef", "stdio", "stdlib",
+ "string", "time", "wchar", "wctype"
+};
+
+/* Macros with these prefixes are considered okay. */
+static char *prefix[] =
+{
+ "_", "E", "is", "str", "mem", "SIG", "FLT_", "DBL_", "LDBL_",
+ "LC_", "wmem", "wcs"
+};
+
+/* Macros with these suffixes are considered okay. Will not work for
+ parametrized macros with arguments. */
+static char *suffix[] =
+{
+ "_MAX", "_MIN"
+};
+
+/* These macros are considered okay. In fact, these are just more prefixes. */
+static char *macros[] =
+{
+ "BUFSIZ", "CHAR_BIT", "CHAR_MAX", "CHAR_MIN", "CLOCKS_PER_SEC",
+ "DBL_DIG", "DBL_EPSILON", "DBL_MANT_DIG", "DBL_MAX",
+ "DBL_MAX_10_EXP", "DBL_MAX_EXP", "DBL_MIN", "DBL_MIN_10_EXP",
+ "DBL_MIN_EXP", "EDOM", "EILSEQ", "EOF", "ERANGE", "EXIT_FAILURE",
+ "EXIT_SUCCESS", "FILENAME_MAX", "FLT_DIG", "FLT_EPSILON",
+ "FLT_MANT_DIG", "FLT_MAX", "FLT_MAX_10_EXP", "FLT_MAX_EXP",
+ "FLT_MIN", "FLT_MIN_10_EXP", "FLT_MIN_EXP", "FLT_RADIX",
+ "FLT_ROUNDS", "FOPEN_MAX", "HUGE_VAL", "INT_MAX", "INT_MIN",
+ "LC_ALL", "LC_COLLATE", "LC_CTYPE", "LC_MONETARY", "LC_NUMERIC",
+ "LC_TIME", "LDBL_DIG", "LDBL_EPSILON", "LDBL_MANT_DIG", "LDBL_MAX",
+ "LDBL_MAX_10_EXP", "LDBL_MAX_EXP", "LDBL_MIN", "LDBL_MIN_10_EXP",
+ "LDBL_MIN_EXP", "LONG_MAX", "LONG_MIN", "L_tmpnam", "MB_CUR_MAX",
+ "MB_LEN_MAX", "NDEBUG", "NULL", "RAND_MAX", "SCHAR_MAX",
+ "SCHAR_MIN", "SEEK_CUR", "SEEK_END", "SEEK_SET", "SHRT_MAX",
+ "SHRT_MIN", "SIGABRT", "SIGFPE", "SIGILL", "SIGINT", "SIGSEGV",
+ "SIGTERM", "SIG_DFL", "SIG_ERR", "SIG_IGN", "TMP_MAX", "UCHAR_MAX",
+ "UINT_MAX", "ULONG_MAX", "USHRT_MAX", "WCHAR_MAX", "WCHAR_MIN",
+ "WEOF", "_IOFBF", "_IOLBF", "_IONBF", "abort", "abs", "acos",
+ "acosf", "acosl", "and", "and_eq", "asctime", "asin", "asinf",
+ "asinl", "assert", "atan", "atan2", "atan2f", "atan2l", "atanf",
+ "atanl", "atexit", "atof", "atoi", "atol", "bitand", "bitor",
+ "bsearch", "btowc", "calloc", "ceil", "ceilf", "ceill", "clearerr",
+ "clock", "clock_t", "compl", "cos", "cosf", "cosh", "coshf",
+ "coshl", "cosl", "ctime", "difftime", "div", "div_t", "errno",
+ "exit", "exp", "expf", "expl", "fabs", "fabsf", "fabsl", "fclose",
+ "feof", "ferror", "fflush", "fgetc", "fgetpos", "fgets", "fgetwc",
+ "fgetws", "floor", "floorf", "floorl", "fmod", "fmodf", "fmodl",
+ "fopen", "fprintf", "fputc", "fputs", "fputwc", "fputws", "fread",
+ "free", "freopen", "frexp", "frexpf", "frexpl", "fscanf", "fseek",
+ "fsetpos", "ftell", "fwide", "fwprintf", "fwrite", "fwscanf",
+ "getc", "getchar", "getenv", "gets", "getwc", "getwchar", "gmtime",
+ "isalnum", "isalpha", "iscntrl", "isdigit", "isgraph", "islower",
+ "isprint", "ispunct", "isspace", "isupper", "iswalnum", "iswalpha",
+ "iswcntrl", "iswctype", "iswdigit", "iswgraph", "iswlower",
+ "iswprint", "iswpunct", "iswspace", "iswupper", "iswxdigit",
+ "isxdigit", "labs", "ldexp", "ldexpf", "ldexpl", "ldiv", "ldiv_t",
+ "localeconv", "localtime", "log", "log10", "log10f", "log10l",
+ "logf", "logl", "longjmp", "malloc", "mblen", "mbrlen", "mbrtowc",
+ "mbsinit", "mbsrtowcs", "mbstate_t", "mbstowcs", "mbtowc", "memchr",
+ "memcmp", "memcpy", "memmove", "memset", "mktime", "modf", "modff",
+ "modfl", "not", "not_eq", "offsetof", "or", "or_eq", "perror",
+ "pow", "powf", "powl", "printf", "ptrdiff_t", "putc", "putchar",
+ "puts", "putwc", "putwchar", "qsort", "raise", "rand", "realloc",
+ "remove", "rename", "rewind", "scanf", "setbuf", "setjmp",
+ "setlocale", "setvbuf", "sig_atomic_t", "signal", "sin", "sinf",
+ "sinh", "sinhf", "sinhl", "sinl", "size_t", "sprintf", "sqrt",
+ "sqrtf", "sqrtl", "srand", "sscanf", "stderr", "stdin", "stdout",
+ "strcat", "strchr", "strcmp", "strcoll", "strcpy", "strcspn",
+ "strerror", "strftime", "strlen", "strncat", "strncmp", "strncpy",
+ "strpbrk", "strrchr", "strspn", "strstr", "strtod", "strtok",
+ "strtol", "strtoul", "strxfrm", "swprintf", "swscanf", "system",
+ "tan", "tanf", "tanh", "tanhf", "tanhl", "tanl", "time", "time_t",
+ "tmpfile", "tmpnam", "tolower", "toupper", "towctrans", "towlower",
+ "towupper", "ungetc", "ungetwc", "va_arg", "va_end", "va_start",
+ "vfprintf", "vfwprintf", "vprintf", "vsprintf", "vswprintf",
+ "vwprintf", "wchar_t", "wcrtomb", "wcscat", "wcschr", "wcscmp",
+ "wcscoll", "wcscpy", "wcscspn", "wcsftime", "wcslen", "wcsncat",
+ "wcsncmp", "wcsncpy", "wcspbrk", "wcsrchr", "wcsrtombs", "wcsspn",
+ "wcsstr", "wcstod", "wcstok", "wcstol", "wcstombs", "wcstoul",
+ "wcsxfrm", "wctob", "wctomb", "wctrans", "wctrans_t", "wctype",
+ "wctype_t", "wint_t", "wmemchr", "wmemcmp", "wmemcpy", "wmemmove",
+ "wmemset", "wprintf", "wscanf", "xor", "xor_eq"
+};
+
+#define NUMBER_OF_HEADERS (sizeof header / sizeof *header)
+#define NUMBER_OF_PREFIXES (sizeof prefix / sizeof *prefix)
+#define NUMBER_OF_SUFFIXES (sizeof suffix / sizeof *suffix)
+#define NUMBER_OF_MACROS (sizeof macros / sizeof *macros)
+
+
+/* Format string to build command to invoke compiler. */
+static const char fmt[] = "\
+echo \"#include <%s>\" |\
+%s -E -dM -ansi -pedantic %s -D_LIBC -I. -I `%s --print-prog-name=include` -\
+> %s";
+
+
+/* The compiler we use (given on the command line). */
+char *CC;
+/* The -I parameters for CC to find all headers. */
+char *INC;
+
+static char *xstrndup (const char *, size_t);
+static const char **get_null_defines (void);
+static int check_header (const char *, const char **);
+
+int
+main (int argc, char *argv[])
+{
+ int h;
+ int result = 0;
+ const char **ignore_list;
+
+ CC = argc > 1 ? argv[1] : "gcc";
+ INC = argc > 2 ? argv[2] : "";
+
+ if (system (NULL) == 0)
+ {
+ puts ("Sorry, no command processor.");
+ return EXIT_FAILURE;
+ }
+
+ /* First get list of symbols which are defined by the compiler. */
+ ignore_list = get_null_defines ();
+
+ fputs ("Tested files:\n", stdout);
+
+ for (h = 0; h < NUMBER_OF_HEADERS; ++h)
+ {
+ char file_name[HEADER_MAX];
+ sprintf (file_name, "%s.h", header[h]);
+ result |= check_header (file_name, ignore_list);
+ }
+
+ /* The test suite should return errors but for now this is not
+ practical. Give a warning and ask the user to correct the bugs. */
+ return result;
+}
+
+
+static char *
+xstrndup (const char *s, size_t n)
+{
+ size_t len = n;
+ char *new = malloc (len + 1);
+
+ if (new == NULL)
+ return NULL;
+
+ new[len] = '\0';
+ return memcpy (new, s, len);
+}
+
+
+static const char **
+get_null_defines (void)
+{
+ char line[BUFSIZ], *command;
+ char **result = NULL;
+ size_t result_len = 0;
+ size_t result_max = 0;
+ FILE *input;
+ int first = 1;
+
+ command = malloc (sizeof fmt + sizeof "/dev/null" + 2 * strlen (CC)
+ + strlen (INC) + strlen (TMPFILE));
+
+ if (command == NULL)
+ {
+ puts ("No more memory.");
+ exit (1);
+ }
+
+ sprintf (command, fmt, "/dev/null", CC, INC, CC, TMPFILE);
+
+ if (system (command))
+ {
+ puts ("system() returned nonzero");
+ return NULL;
+ }
+ free (command);
+ input = fopen (TMPFILE, "r");
+
+ if (input == NULL)
+ {
+ printf ("Could not read %s: ", TMPFILE);
+ perror (NULL);
+ return NULL;
+ }
+
+ while (fgets (line, sizeof line, input) != NULL)
+ {
+ int i, okay = 0;
+ size_t endmac;
+ char *start, *end;
+ if (strlen (line) < 9 || line[7] != ' ')
+ { /* "#define A" */
+ printf ("Malformed input, expected '#define MACRO'\ngot '%s'\n",
+ line);
+ continue;
+ }
+ if (line[8] == '_')
+ /* It's a safe identifier. */
+ continue;
+ if (result_len == result_max)
+ {
+ result_max += 10;
+ result = realloc (result, result_max * sizeof (char **));
+ if (result == NULL)
+ {
+ puts ("No more memory.");
+ exit (1);
+ }
+ }
+ start = &line[8];
+ for (end = start + 1; !isspace (*end) && *end != '\0'; ++end)
+ ;
+ result[result_len++] = xstrndup (start, end - start);
+
+ if (first)
+ {
+ fputs ("The following identifiers will be ignored since the compiler defines them\nby default:\n", stdout);
+ first = 0;
+ }
+ puts (result[result_len - 1]);
+ }
+ if (result_len == result_max)
+ {
+ result_max += 1;
+ result = realloc (result, result_max * sizeof (char **));
+ if (result == NULL)
+ {
+ puts ("No more memory.");
+ exit (1);
+ }
+ }
+ result[result_len] = NULL;
+ fclose (input);
+ remove (TMPFILE);
+
+ return (const char **) result;
+}
+
+
+static int
+check_header (const char *file_name, const char **except)
+{
+ char line[BUFSIZ], *command;
+ FILE *input;
+ int result = 0;
+
+ command = malloc (sizeof fmt + strlen (file_name) + 2 * strlen (CC)
+ + strlen (INC) + strlen (TMPFILE));
+
+ if (command == NULL)
+ {
+ puts ("No more memory.");
+ exit (1);
+ }
+
+ puts (file_name);
+ sprintf (command, fmt, file_name, CC, INC, CC, TMPFILE);
+
+ if (system (command))
+ {
+ puts ("system() returned nonzero");
+ result = 1;
+ }
+ free (command);
+ input = fopen (TMPFILE, "r");
+
+ if (input == NULL)
+ {
+ printf ("Could not read %s: ", TMPFILE);
+ perror (NULL);
+ return 1;
+ }
+
+ while (fgets (line, sizeof line, input) != NULL)
+ {
+ int i, okay = 0;
+ size_t endmac;
+ const char **cpp;
+ if (strlen (line) < 9 || line[7] != ' ')
+ { /* "#define A" */
+ printf ("Malformed input, expected '#define MACRO'\ngot '%s'\n",
+ line);
+ result = 1;
+ continue;
+ }
+ for (i = 0; i < NUMBER_OF_PREFIXES; ++i)
+ {
+ if (!strncmp (line+8, prefix[i], strlen (prefix[i]))) {
+ ++okay;
+ break;
+ }
+ }
+ if (okay)
+ continue;
+ for (i = 0; i < NUMBER_OF_MACROS; ++i)
+ {
+ if (!strncmp (line + 8, macros[i], strlen (macros[i])))
+ {
+ ++okay;
+ break;
+ }
+ }
+ if (okay)
+ continue;
+ /* Find next char after the macro identifier; this can be either
+ a space or an open parenthesis. */
+ endmac = strcspn (line + 8, " (");
+ if (line[8+endmac] == '\0')
+ {
+ printf ("malformed input, expected '#define MACRO VALUE'\n"
+ "got '%s'\n", line);
+ result = 1;
+ continue;
+ }
+ for (i = 0; i < NUMBER_OF_SUFFIXES; ++i)
+ {
+ size_t len = strlen (suffix[i]);
+ if (!strncmp (line + 8 + endmac - len, suffix[i], len))
+ {
+ ++okay;
+ break;
+ }
+ }
+ if (okay)
+ continue;
+ if (except != NULL)
+ for (cpp = except; *cpp != NULL; ++cpp)
+ {
+ size_t len = strlen (*cpp);
+ if (!strncmp (line + 8, *cpp, len) && isspace (line[8 + len]))
+ {
+ ++okay;
+ break;
+ }
+ }
+ if (!okay)
+ {
+ fputs (line, stdout);
+ result = 2;
+ }
+ }
+ fclose (input);
+ remove (TMPFILE);
+
+ return result;
+}
+
+/* EOF */
projects / thirdparty / glibc.git / commitdiff
