| 1 | // RUN: %clangxx -O1 %s -o %t && %env_tool_opts=handle_sigtrap=1 %run %t 2>&1 | FileCheck %s |
|---|
| 2 | |
|---|
| 3 | // __builtin_debugtrap() does not raise SIGTRAP on these platforms. |
|---|
| 4 | // UNSUPPORTED: target=s390{{.*}} |
|---|
| 5 | |
|---|
| 6 | #include <assert.h> |
|---|
| 7 | #include <signal.h> |
|---|
| 8 | #include <stdio.h> |
|---|
| 9 | #include <stdlib.h> |
|---|
| 10 | |
|---|
| 11 | int in_handler; |
|---|
| 12 | |
|---|
| 13 | void handler(int signo, siginfo_t *info, void *uctx) { |
|---|
| 14 | fprintf(stderr, format: "in_handler: %d\n" , in_handler); |
|---|
| 15 | fflush(stderr); |
|---|
| 16 | // CHECK: in_handler: 1 |
|---|
| 17 | _Exit(status: 0); |
|---|
| 18 | } |
|---|
| 19 | |
|---|
| 20 | int main() { |
|---|
| 21 | struct sigaction a = {}, old = {}; |
|---|
| 22 | a.sa_sigaction = handler; |
|---|
| 23 | a.sa_flags = SA_SIGINFO; |
|---|
| 24 | sigaction(SIGTRAP, act: &a, oact: &old); |
|---|
| 25 | |
|---|
| 26 | a = {}; |
|---|
| 27 | sigaction(SIGTRAP, act: 0, oact: &a); |
|---|
| 28 | assert(a.sa_sigaction == handler); |
|---|
| 29 | assert(a.sa_flags & SA_SIGINFO); |
|---|
| 30 | |
|---|
| 31 | in_handler = 1; |
|---|
| 32 | // Check that signal handler is not postponed by sanitizer. |
|---|
| 33 | // Don't use raise here as it calls any signal handler immediately. |
|---|
| 34 | __builtin_debugtrap(); |
|---|
| 35 | in_handler = 0; |
|---|
| 36 | |
|---|
| 37 | fprintf(stderr, format: "UNREACHABLE\n" ); |
|---|
| 38 | return 1; |
|---|
| 39 | } |
|---|
| 40 | |
|---|
