434dc0a5bc
However, whether applications rely on the std::bad_function_call vtable being in the dylib is still controlled by the ABI macro, since changing that would be an ABI break. Also separate preprocessor definitions for whether to use a key function and whether to use a `bad_function_call`-specific `what` message (`what` message is mandated by [LWG2233](http://wg21.link/LWG2233)). Differential Revision: https://reviews.llvm.org/D92397
53 lines
1.6 KiB
C++
53 lines
1.6 KiB
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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// Address Sanitizer doesn't instrument weak symbols on Linux. When a key
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// function is defined for bad_function_call's vtable, its typeinfo and vtable
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// will be defined as strong symbols in the library and weak symbols in other
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// translation units. Only the strong symbol will be instrumented, increasing
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// its size (due to the redzone) and leading to a serious ODR violation
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// resulting in a crash.
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// Some relevant bugs:
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// https://github.com/google/sanitizers/issues/1017
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// https://github.com/google/sanitizers/issues/619
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// https://github.com/google/sanitizers/issues/398
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// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68016
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// UNSUPPORTED: c++03, asan
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// XFAIL: LIBCXX-AIX-FIXME
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// <functional>
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// template<CopyConstructible Fn, CopyConstructible... Types>
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// unspecified bind(Fn, Types...);
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// template<Returnable R, CopyConstructible Fn, CopyConstructible... Types>
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// unspecified bind(Fn, Types...);
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// https://llvm.org/PR16385
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#include <functional>
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#include <cmath>
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#include <cassert>
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#include "test_macros.h"
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float _pow(float a, float b)
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{
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return std::pow(a, b);
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}
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int main(int, char**)
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{
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std::function<float(float, float)> fnc = _pow;
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auto task = std::bind(fnc, 2.f, 4.f);
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auto task2(task);
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assert(task() == 16);
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assert(task2() == 16);
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return 0;
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}
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