2f984cab4f
pointer-to-member type, produce a null value of the right type. This fixes a bug where throwing an exception of type nullptr_t and catching it as a pointer-to-member would not guarantee to produce a null value in the catch handler. The fix is pretty simple: we statically allocate a constant null pointer-to-data-member representation and a constant null pointer-to-member-function representation, and produce the address of the relevant value as the adjusted pointer for the exception. llvm-svn: 276016
76 lines
1.2 KiB
C++
76 lines
1.2 KiB
C++
//===--------------------- catch_pointer_nullptr.cpp ----------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++98, c++03, libcxxabi-no-exceptions
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#include <cassert>
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#include <cstdlib>
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struct A {};
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void test1()
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{
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try
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{
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throw nullptr;
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assert(false);
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}
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catch (int* p)
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{
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assert(!p);
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}
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catch (long*)
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{
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assert(false);
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}
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}
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void test2()
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{
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try
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{
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throw nullptr;
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assert(false);
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}
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catch (A* p)
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{
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assert(!p);
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}
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catch (int*)
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{
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assert(false);
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}
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}
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template <class Catch>
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void catch_nullptr_test() {
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try {
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throw nullptr;
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assert(false);
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} catch (Catch c) {
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assert(!c);
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} catch (...) {
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assert(false);
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}
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}
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int main()
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{
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// catch naked nullptrs
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test1();
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test2();
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catch_nullptr_test<int*>();
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catch_nullptr_test<int**>();
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catch_nullptr_test<int A::*>();
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catch_nullptr_test<const int A::*>();
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catch_nullptr_test<int A::**>();
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}
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