glibc/stdio-common/test-fwrite.c
Frédéric Bérat 8c4f69d711 tests: fix warn unused result on asprintf calls
When enabling _FORTIFY_SOURCE, some functions now lead to warnings when
their result is not checked.

Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
2023-06-06 08:23:53 -04:00

74 lines
1.3 KiB
C

#include <stdio.h>
#include <string.h>
#include <support/support.h>
static int
do_test (void)
{
FILE *f = tmpfile ();
char obuf[99999], ibuf[sizeof obuf];
char *line;
size_t linesz;
if (! f)
{
perror ("tmpfile");
return 1;
}
if (fputs ("line\n", f) == EOF)
{
perror ("fputs");
return 1;
}
memset (obuf, 'z', sizeof obuf);
memset (ibuf, 'y', sizeof ibuf);
if (fwrite (obuf, sizeof obuf, 1, f) != 1)
{
perror ("fwrite");
return 1;
}
rewind (f);
line = NULL;
linesz = 0;
if (getline (&line, &linesz, f) != 5)
{
perror ("getline");
return 1;
}
if (strcmp (line, "line\n"))
{
puts ("Lines differ. Test FAILED!");
return 1;
}
if (fread (ibuf, sizeof ibuf, 1, f) != 1)
{
perror ("fread");
return 1;
}
if (memcmp (ibuf, obuf, sizeof ibuf))
{
puts ("Buffers differ. Test FAILED!");
return 1;
}
line = xasprintf ("\
GDB is free software and you are welcome to distribute copies of it\n\
under certain conditions; type \"show copying\" to see the conditions.\n\
There is absolutely no warranty for GDB; type \"show warranty\" for details.\n\
");
puts ("Test succeeded.");
return 0;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"