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glibc/stdio-common/scanf14.c
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#include <stdio.h> | |
#include <stdlib.h> | |
#include <string.h> | |
#include <wchar.h> | |
#include <libc-internal.h> | |
#define FAIL() \ | |
do { \ | |
result = 1; \ | |
printf ("test at line %d failed\n", __LINE__); \ | |
} while (0) | |
int | |
main (void) | |
{ | |
wchar_t *lsp; | |
char *sp; | |
float f; | |
double d; | |
char c[8]; | |
int result = 0; | |
if (sscanf (" 0.25s x", "%e%3c", &f, c) != 2) | |
FAIL (); | |
else if (f != 0.25 || memcmp (c, "s x", 3) != 0) | |
FAIL (); | |
/* GCC in C99 mode treats %a as the C99 format expecting float *, | |
but glibc with _GNU_SOURCE treats %as as the GNU allocation | |
extension, so resulting in "warning: format '%a' expects argument | |
of type 'float *', but argument 3 has type 'char **'". This | |
applies to the other %as, %aS and %a[] formats below as well. */ | |
DIAG_PUSH_NEEDS_COMMENT; | |
DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wformat"); | |
if (sscanf (" 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); | |
} | |
DIAG_POP_NEEDS_COMMENT; | |
if (sscanf (" 2.25s x", "%las%2c", &d, c) != 2) | |
FAIL (); | |
else if (d != 2.25 || memcmp (c, " x", 2) != 0) | |
FAIL (); | |
/* See explanation above. */ | |
DIAG_PUSH_NEEDS_COMMENT; | |
DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wformat"); | |
if (sscanf (" 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 (sscanf ("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); | |
} | |
DIAG_POP_NEEDS_COMMENT; | |
if (sscanf ("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-scanf14.XXXXXX"]; | |
sprintf (fname, "%s/tst-scanf14.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 (); | |
/* See explanation above. */ | |
DIAG_PUSH_NEEDS_COMMENT; | |
DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wformat"); | |
if (fscanf (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); | |
} | |
DIAG_POP_NEEDS_COMMENT; | |
if (freopen (fname, "r", stdin) == NULL) | |
FAIL (); | |
else | |
{ | |
/* See explanation above. */ | |
DIAG_PUSH_NEEDS_COMMENT; | |
DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wformat"); | |
if (scanf ("%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); | |
} | |
DIAG_POP_NEEDS_COMMENT; | |
} | |
fclose (fp); | |
} | |
remove (fname); | |
return result; | |
} |