ref: 2cbd4b6dfcb79a7a3ddb3f2f01f745a0f2d3a506 dir: /sys/src/libc/port/_assert.c/
#include <u.h> #include <libc.h> void (*__assert)(char*); void _assert(char *s) { if(__assert) (*__assert)(s); fprint(2, "assert failed: %s\n", s); abort(); }