Files
llvm/libcxxabi/test/uncaught_exception.pass.cpp
Louis Dionne 3252e11da3 [libc++] Add availability markup for LLVM 19 and LLVM 20 (#140072)
An LLVM 19-aligned libc++ was released with macOS 15.4 (and corresponding OSes),
and LLVM-20 aligned with macOS 26.0. This patch adds availability markup to
reflect that.
2025-11-02 15:24:30 -10:00

35 lines
1.2 KiB
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
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: no-exceptions
// This tests that libc++abi still provides __cxa_uncaught_exception() for
// ABI compatibility, even though the Standard doesn't require it to.
// __cxa_uncaught_exception was not re-exported from libc++ previously. This leads
// to undefined symbols when linking against a libc++ that re-exports the symbols,
// but running against a libc++ that doesn't. Fortunately, usage of __cxa_uncaught_exception()
// in the wild seems to be close to non-existent.
// XFAIL: using-built-library-before-llvm-19
#include <cxxabi.h>
#include <cassert>
// namespace __cxxabiv1 {
// extern bool __cxa_uncaught_exception () throw();
// }
struct A {
~A() { assert( __cxxabiv1::__cxa_uncaught_exception()); }
};
int main () {
try { A a; throw 3; assert(false); }
catch (int) {}
}