ref: fcec548cff5349d73e1c64a99aee77ce2331858d
dir: /tests/libc/execute/0026-strstr.c/
#include <assert.h>
#include <stdio.h>
#include <string.h>
/*
output:
testing
done
end:
*/
int
main()
{
char buf[30] = "abc";
puts("testing");
assert(strstr(buf, "abc") == buf);
assert(strstr(buf, "bc") == buf + 1);
assert(strstr(buf, "c") == buf + 2);
assert(strstr(buf, "d") == NULL);
strcpy(buf, "ababc");
assert(strstr(buf, "abc") == buf+2);
assert(strstr("", "abc") == NULL);
assert(strstr(buf, "") == buf);
buf[0] = '\0';
assert(strstr(buf, "") == buf);
puts("done");
return 0;
}