mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-17 10:30:20 +00:00
44 lines
710 B
C
44 lines
710 B
C
/* Test for ungetc bugs. */
|
|
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
|
|
#define assert(x) \
|
|
if (!(x)) \
|
|
{ \
|
|
fputs ("test failed: " #x "\n", stderr); \
|
|
retval = 1; \
|
|
goto the_end; \
|
|
}
|
|
|
|
int
|
|
main (int argc, char *argv[])
|
|
{
|
|
char *name;
|
|
FILE *fp = NULL;
|
|
int retval = 0;
|
|
int c;
|
|
|
|
name = tmpnam (NULL);
|
|
fp = fopen (name, "w");
|
|
assert (fp != NULL)
|
|
fputs ("bl", fp);
|
|
fclose (fp);
|
|
fp = NULL;
|
|
|
|
fp = fopen (name, "r");
|
|
assert (fp != NULL)
|
|
assert (getc (fp) != EOF);
|
|
assert ((c = getc (fp)) != EOF);
|
|
assert (getc (fp) == EOF);
|
|
assert (ungetc (c, fp) == c);
|
|
assert (feof (fp) == 0);
|
|
|
|
the_end:
|
|
if (fp != NULL)
|
|
fclose (fp);
|
|
unlink (name);
|
|
|
|
return retval;
|
|
}
|