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// RUN: %clangxx -O1 %s -o %t && %env_tool_opts=handle_sigtrap=1 %run %t 2>&1 | FileCheck %s
// __builtin_debugtrap() does not raise SIGTRAP on these platforms.
// UNSUPPORTED: s390
#include <assert.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
int in_handler;
void handler(int signo, siginfo_t *info, void *uctx) {
fprintf(stderr, "in_handler: %d\n", in_handler);
fflush(stderr);
// CHECK: in_handler: 1
_Exit(0);
}
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);
in_handler = 1;
// Check that signal handler is not postponed by sanitizer.
// Don't use raise here as it calls any signal handler immediately.
__builtin_debugtrap();
in_handler = 0;
fprintf(stderr, "UNREACHABLE\n");
return 1;
}
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