diff options
Diffstat (limited to 'stdio-common/scanf19.c')
| -rw-r--r-- | stdio-common/scanf19.c | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/stdio-common/scanf19.c b/stdio-common/scanf19.c new file mode 100644 index 0000000000..196dca2915 --- /dev/null +++ b/stdio-common/scanf19.c @@ -0,0 +1,171 @@ +/* Copyright (C) 2008-2023 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + 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 + <https://www.gnu.org/licenses/>. */ + +/* This test exercises the deprecated GNU %as, %aS, and %a[...] scanf + modifiers, which are not available to programs compiled as C99 + anymore; therefore, this file is compiled with -std=gnu89 and C99 + syntax must not be used. */ + +#include <stdarg.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <wchar.h> + +#if !__GLIBC_USE_DEPRECATED_SCANF +# error "This file should be compiled with deprecated scanf" +#endif + +#define FAIL() \ + do { \ + result = 1; \ + printf ("test at line %d failed\n", __LINE__); \ + } while (0) + +static int __attribute__ ((format (scanf, 2, 3))) +xsscanf (const char *str, const char *fmt, ...) +{ + va_list ap; + va_start (ap, fmt); + int ret = vsscanf (str, fmt, ap); + va_end (ap); + return ret; +} + +static int __attribute__ ((format (scanf, 1, 2))) +xscanf (const char *fmt, ...) +{ + va_list ap; + va_start (ap, fmt); + int ret = vscanf (fmt, ap); + va_end (ap); + return ret; +} + +static int __attribute__ ((format (scanf, 2, 3))) +xfscanf (FILE *f, const char *fmt, ...) +{ + va_list ap; + va_start (ap, fmt); + int ret = vfscanf (f, fmt, ap); + va_end (ap); + return ret; +} + +int +main (void) +{ + wchar_t *lsp; + char *sp; + float f; + double d; + char c[8]; + int result = 0; + + if (xsscanf (" 0.25s x", "%e%3c", &f, c) != 2) + FAIL (); + else if (f != 0.25 || memcmp (c, "s x", 3) != 0) + FAIL (); + if (xsscanf (" 1.25s x", "%as%2c", &sp, c) != 2) + FAIL (); + else + { + if (strcmp (sp, "1.25s") != 0 || memcmp (c, " x", 2) != 0) + FAIL (); + memset (sp, 'x', sizeof "1.25s"); + free (sp); + } + if (xsscanf (" 2.25s x", "%las%2c", &d, c) != 2) + FAIL (); + else if (d != 2.25 || memcmp (c, " x", 2) != 0) + FAIL (); + if (xsscanf (" 3.25S x", "%4aS%3c", &lsp, c) != 2) + FAIL (); + else + { + if (wcscmp (lsp, L"3.25") != 0 || memcmp (c, "S x", 3) != 0) + FAIL (); + memset (lsp, 'x', sizeof L"3.25"); + free (lsp); + } + if (xsscanf ("4.25[0-9.] x", "%a[0-9.]%8c", &sp, c) != 2) + FAIL (); + else + { + if (strcmp (sp, "4.25") != 0 || memcmp (c, "[0-9.] x", 8) != 0) + FAIL (); + memset (sp, 'x', sizeof "4.25"); + free (sp); + } + if (xsscanf ("5.25[0-9.] x", "%la[0-9.]%2c", &d, c) != 2) + FAIL (); + else if (d != 5.25 || memcmp (c, " x", 2) != 0) + FAIL (); + + const char *tmpdir = getenv ("TMPDIR"); + if (tmpdir == NULL || tmpdir[0] == '\0') + tmpdir = "/tmp"; + + char fname[strlen (tmpdir) + sizeof "/tst-scanf16.XXXXXX"]; + sprintf (fname, "%s/tst-scanf16.XXXXXX", tmpdir); + + /* Create a temporary file. */ + int fd = mkstemp (fname); + if (fd == -1) + FAIL (); + + FILE *fp = fdopen (fd, "w+"); + if (fp == NULL) + FAIL (); + else + { + if (fputs (" 1.25s x", fp) == EOF) + FAIL (); + if (fseek (fp, 0, SEEK_SET) != 0) + FAIL (); + if (xfscanf (fp, "%as%2c", &sp, c) != 2) + FAIL (); + else + { + if (strcmp (sp, "1.25s") != 0 || memcmp (c, " x", 2) != 0) + FAIL (); + memset (sp, 'x', sizeof "1.25s"); + free (sp); + } + + if (freopen (fname, "r", stdin) == NULL) + FAIL (); + else + { + if (xscanf ("%as%2c", &sp, c) != 2) + FAIL (); + else + { + if (strcmp (sp, "1.25s") != 0 || memcmp (c, " x", 2) != 0) + FAIL (); + memset (sp, 'x', sizeof "1.25s"); + free (sp); + } + } + + fclose (fp); + } + + remove (fname); + + return result; +} |