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// RUN: %clangxx -O1 %s -o %t && %env_tool_opts=handle_sigtrap=1 %run %t 2>&1 | FileCheck %s
#include <assert.h>
#include <signal.h>
#include <stdio.h>
int handled;
void handler(int signo, siginfo_t *info, void *uctx) {
handled = 1;
}
int main() {
struct sigaction a = {}, old = {};
a.sa_sigaction = handler;
a.sa_flags = SA_SIGINFO;
sigaction(SIGTRAP, &a, &old);
a = {};
sigaction(SIGTRAP, 0, &a);
assert(a.sa_sigaction == handler);
assert(a.sa_flags & SA_SIGINFO);
__builtin_debugtrap();
assert(handled);
fprintf(stderr, "HANDLED %d\n", handled);
}
// CHECK: HANDLED 1
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