#undef _GNU_SOURCE #define _XOPEN_SOURCE 600 #undef _LIBC /* The following macro definitions are a hack. They word around disabling the GNU extension while still using a few internal headers. */ #define u_char unsigned char #define u_short unsigned short #define u_int unsigned int #define u_long unsigned long #include <stdarg.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <wchar.h> #define FAIL() \ do { \ result = 1; \ printf ("test at line %d failed\n", __LINE__); \ } while (0) static int 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 xscanf (const char *fmt, ...) { va_list ap; va_start (ap, fmt); int ret = vscanf (fmt, ap); va_end (ap); return ret; } static int 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) { 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", &f, c) != 2) FAIL (); else if (f != 1.25 || memcmp (c, " x", 2) != 0) FAIL (); 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%2c", &f, c) != 2) FAIL (); else if (f != 3.25 || memcmp (c, " x", 2) != 0) FAIL (); if (xsscanf (" 4.25[0-9.] x", "%a[0-9.]%2c", &f, c) != 2) FAIL (); else if (f != 4.25 || memcmp (c, " x", 2) != 0) FAIL (); 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-scanf17.XXXXXX"]; sprintf (fname, "%s/tst-scanf17.XXXXXX", tmpdir); if (fname == NULL) FAIL (); /* 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", &f, c) != 2) FAIL (); else if (f != 1.25 || memcmp (c, " x", 2) != 0) FAIL (); if (freopen (fname, "r", stdin) == NULL) FAIL (); else { if (xscanf ("%as%2c", &f, c) != 2) FAIL (); else if (f != 1.25 || memcmp (c, " x", 2) != 0) FAIL (); } fclose (fp); } remove (fname); return result; }