/* Tests of *printf for very large strings. Copyright (C) 2000-2016 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper , 2000. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see . */ #include #include #include #include #include #include #include #include #include const char *locs[] = { "C", "de_DE.ISO-8859-1", "de_DE.UTF-8", "ja_JP.EUC-JP" }; #define nlocs (sizeof (locs) / sizeof (locs[0])) char large[50000]; static int do_test (void) { char buf[25]; size_t i; int res = 0; int fd; mtrace (); strcpy (buf, "/tmp/test-vfprintfXXXXXX"); fd = mkstemp (buf); if (fd == -1) { printf ("cannot open temporary file: %m\n"); exit (1); } unlink (buf); for (i = 0; i < nlocs; ++i) { FILE *fp; struct stat st; int fd2; setlocale (LC_ALL, locs[i]); memset (large, '\1', sizeof (large)); large[sizeof (large) - 1] = '\0'; fd2 = dup (fd); if (fd2 == -1) { printf ("cannot dup for locale %s: %m\n", setlocale (LC_ALL, NULL)); exit (1); } if (ftruncate (fd2, 0) != 0) { printf ("cannot truncate file for locale %s: %m\n", setlocale (LC_ALL, NULL)); exit (1); } fp = fdopen (fd2, "a"); if (fp == NULL) { printf ("cannot create FILE for locale %s: %m\n", setlocale (LC_ALL, NULL)); exit (1); } fprintf (fp, "%s", large); fprintf (fp, "%.*s", 30000, large); large[20000] = '\0'; /* We're testing a large format string here and need to generate it to avoid this source file being ridiculous. So disable the warning about a generated format string. */ DIAG_PUSH_NEEDS_COMMENT; DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wformat-security"); fprintf (fp, large); DIAG_POP_NEEDS_COMMENT; fprintf (fp, "%-1.300000000s", "hello"); if (fflush (fp) != 0 || ferror (fp) != 0 || fclose (fp) != 0) { printf ("write error for locale %s: %m\n", setlocale (LC_ALL, NULL)); exit (1); } if (fstat (fd, &st) != 0) { printf ("cannot stat for locale %s: %m\n", setlocale (LC_ALL, NULL)); exit (1); } else if (st.st_size != 50000 + 30000 + 19999 + 5) { printf ("file size incorrect for locale %s: %jd instead of %jd\n", setlocale (LC_ALL, NULL), (intmax_t) st.st_size, (intmax_t) 50000 + 30000 + 19999 + 5); res = 1; } else printf ("locale %s OK\n", setlocale (LC_ALL, NULL)); } close (fd); return res; } #define TEST_FUNCTION do_test () #include "../test-skeleton.c"