glibc/stdio-common/tst-sprintf.c

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int
main (void)
{
char buf[100];
int result = 0;
if (sprintf (buf, "%.0ls", L"foo") != 0
|| strlen (buf) != 0)
{
puts ("sprintf (buf, \"%.0ls\", L\"foo\") produced some output");
result = 1;
}
#define SIZE (1024*70000)
#define STR(x) #x
char *dst = malloc (SIZE + 1);
if (dst == NULL)
{
puts ("memory allocation failure");
result = 1;
}
else
{
sprintf (dst, "%*s", SIZE, "");
if (strnlen (dst, SIZE + 1) != SIZE)
{
puts ("sprintf (dst, \"%*s\", " STR(SIZE) ", \"\") did not produce enough output");
result = 1;
}
free (dst);
}
return result;
}