ref: 5e010fd8a82ec3b6552b4002bcd4be0586081e9a
dir: /sys/src/ape/lib/ap/gen/_assert.c/
#include <stdlib.h> #include <unistd.h> #include <assert.h> void _assert(char *f, unsigned line) { char buf[20], *p, *s = &buf[20]; write(2, "assertion failed: file ", 23); for(p = f; *p; p++) continue; write(2, f, p-f); *--s = '\n'; do *--s = line%10 + '0'; while (line /= 10); *--s = ':'; write(2, s, &buf[20] - s); abort(); }