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- /* copied from rsync */
- #include <sys/types.h>
- #include <stdarg.h>
- void foo(const char *format, ...) {
- va_list ap;
- int len;
- char buf[5];
- va_start(ap, format);
- len = vsnprintf(0, 0, format, ap);
- va_end(ap);
- if (len != 5) exit(1);
- if (snprintf(buf, 3, "hello") != 5 || strcmp(buf, "he") != 0) exit(1);
- exit(0);
- }
- int main() { foo("hello"); }
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