| 1 | //===----------------------------------------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | // Address Sanitizer doesn't instrument weak symbols on Linux. When a key |
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| 10 | // function is defined for bad_function_call's vtable, its typeinfo and vtable |
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| 11 | // will be defined as strong symbols in the library and weak symbols in other |
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| 12 | // translation units. Only the strong symbol will be instrumented, increasing |
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| 13 | // its size (due to the redzone) and leading to a serious ODR violation |
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| 14 | // resulting in a crash. |
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| 15 | // Some relevant bugs: |
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| 16 | // https://github.com/google/sanitizers/issues/1017 |
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| 17 | // https://github.com/google/sanitizers/issues/619 |
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| 18 | // https://github.com/google/sanitizers/issues/398 |
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| 19 | // https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68016 |
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| 20 | // UNSUPPORTED: c++03, asan |
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| 21 | |
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| 22 | // <functional> |
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| 23 | |
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| 24 | #include <functional> |
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| 25 | |
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| 26 | #include "test_macros.h" |
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| 27 | |
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| 28 | struct Incomplete; |
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| 29 | template<class T> struct Holder { T t; }; |
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| 30 | |
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| 31 | typedef Holder<Incomplete> *Ptr; |
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| 32 | |
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| 33 | template<class T> |
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| 34 | struct Callable { |
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| 35 | void operator()() const { } |
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| 36 | }; |
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| 37 | |
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| 38 | Ptr no_args() { return nullptr; } |
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| 39 | Ptr one_arg(Ptr p) { return p; } |
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| 40 | Ptr two_args(Ptr p, Ptr) { return p; } |
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| 41 | Ptr three_args(Ptr p, Ptr, Ptr) { return p; } |
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| 42 | Ptr four_args(Ptr p, Ptr, Ptr, Ptr) { return p; } |
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| 43 | |
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| 44 | void one_arg_void(Ptr) { } |
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| 45 | |
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| 46 | int main(int, char**) { |
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| 47 | Ptr x = nullptr; |
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| 48 | std::function<Ptr()> f(no_args); f(); |
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| 49 | std::function<Ptr(Ptr)> g(one_arg); g(x); |
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| 50 | std::function<void(Ptr)> h(one_arg_void); h(x); |
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| 51 | std::function<void()> i(Callable<Holder<Incomplete>>{}); |
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| 52 | return 0; |
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| 53 | } |
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| 54 | |
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