504bc07d1a
This is needed when running the tests in Freestanding mode, where main() isn't treated specially. In Freestanding, main() doesn't get mangled as extern "C", so whatever runtime we're using fails to find the entry point. One way to solve this problem is to define a symbol alias from __Z4mainiPPc to _main, however this requires all definitions of main() to have the same mangling. Hence this commit.
35 lines
1008 B
C++
35 lines
1008 B
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: no-exceptions
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// This test checks that the compiler does not make incorrect assumptions
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// about the alignment of the exception (only in that specific case, of
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// course).
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//
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// There was a bug where Clang would emit a call to memset assuming a 16-byte
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// aligned exception even when back-deploying to older Darwin systems where
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// exceptions are 8-byte aligned, which caused a segfault on those systems.
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struct exception {
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exception() : x(0) { }
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virtual ~exception() { }
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int x;
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};
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struct foo : exception { };
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int main(int, char**) {
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try {
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throw foo();
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} catch (...) {
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}
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return 0;
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}
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