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/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* Contributed by: Intel Corporation
*/
#include <dlfcn.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <unwind.h>
#define noinline __attribute__((__noinline__))
#ifndef __unused
#define __unused __attribute__((__unused__))
#endif
static noinline _Unwind_Reason_Code cleanup_unwind_fn(int a __unused,
_Unwind_Action action,
_Unwind_Exception_Class b __unused,
struct _Unwind_Exception* c __unused,
struct _Unwind_Context* ctx __unused,
void* e __unused) {
if ((action & _UA_END_OF_STACK) != 0) {
abort(); // We reached the end of the stack without executing foo_cleanup (which would have exited). Test failed.
}
return _URC_NO_REASON;
}
static void noinline foo_cleanup(char* param __unused) {
exit(42);
}
static void noinline function_with_cleanup_function() {
char c __attribute__((cleanup(foo_cleanup))) __unused;
*((int*) 1) = 0;
}
static void noinline cleanup_sigsegv_handler(int param __unused) {
struct _Unwind_Exception* exception = (struct _Unwind_Exception*) calloc(1, sizeof(*exception));
_Unwind_ForcedUnwind(exception, cleanup_unwind_fn, 0);
}
void unwind_through_frame_with_cleanup_function() {
signal(SIGSEGV, &cleanup_sigsegv_handler);
function_with_cleanup_function();
}
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