forked from OSchip/llvm-project
72 lines
2.0 KiB
C++
72 lines
2.0 KiB
C++
// -*- C++ -*-
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// REQUIRES: linux
|
|
|
|
// TODO: Figure out why this fails with Memory Sanitizer.
|
|
// XFAIL: msan
|
|
|
|
// Basic test for _Unwind_ForcedUnwind.
|
|
// See libcxxabi/test/forced_unwind* tests too.
|
|
|
|
#include <assert.h>
|
|
#include <dlfcn.h>
|
|
#include <signal.h>
|
|
#include <stdint.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <sys/types.h>
|
|
#include <unistd.h>
|
|
#include <unwind.h>
|
|
|
|
void foo();
|
|
_Unwind_Exception ex;
|
|
|
|
_Unwind_Reason_Code stop(int version, _Unwind_Action actions,
|
|
_Unwind_Exception_Class exceptionClass,
|
|
_Unwind_Exception *exceptionObject,
|
|
struct _Unwind_Context *context,
|
|
void *stop_parameter) {
|
|
assert(version == 1);
|
|
assert((actions & _UA_FORCE_UNWIND) != 0);
|
|
(void)exceptionClass;
|
|
assert(exceptionObject == &ex);
|
|
assert(stop_parameter == &foo);
|
|
|
|
Dl_info info = {0, 0, 0, 0};
|
|
|
|
// Unwind util the main is reached, above frames depend on the platform and
|
|
// architecture.
|
|
if (dladdr(reinterpret_cast<void *>(_Unwind_GetIP(context)), &info) &&
|
|
info.dli_sname && !strcmp("main", info.dli_sname)) {
|
|
_Exit(0);
|
|
}
|
|
return _URC_NO_REASON;
|
|
}
|
|
|
|
__attribute__((noinline)) void foo() {
|
|
|
|
// Arm EHABI defines struct _Unwind_Control_Block as exception
|
|
// object. Ensure struct _Unwind_Exception* work there too,
|
|
// because _Unwind_Exception in this case is just an alias.
|
|
struct _Unwind_Exception *e = &ex;
|
|
#if defined(_LIBUNWIND_ARM_EHABI)
|
|
// Create a mock exception object.
|
|
memset(e, '\0', sizeof(*e));
|
|
strcpy(reinterpret_cast<char *>(&e->exception_class), "CLNGUNW");
|
|
#endif
|
|
_Unwind_ForcedUnwind(e, stop, (void *)&foo);
|
|
}
|
|
|
|
int main() {
|
|
foo();
|
|
return -2;
|
|
}
|