psiginfo.c\signal\src - musl - musl - an implementation of the standard library for Linux-based systems

#include <stdio.h>
#include <string.h>
#include <signal.h>
void psiginfo(const siginfo_t *si, const char *msg)
{
	char *s = strsignal(si->si_signo);
	if (msg) fprintf(stderr, "%s: %s\n", msg, s);
	else fprintf(stderr, "%s\n", s);
}