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e566313a1f
`man 3 signal`'s declaration has a face _only a mother could love_. sighandler_t and __sighandler_t are not defined in the C standard, or POSIX. They are helpful typedefs provided by glibc and the Linux kernel UAPI headers respectively since working with function pointers' syntax can be painful. But we should not rely on them; in C++ we have `auto*` and `using` statements. Remove the proxy header, and only include a typedef for sighandler_t when targeting Linux, for compatibility with glibc. Fixes: #125598
59 lines
1.6 KiB
C++
59 lines
1.6 KiB
C++
//===-- FPExceptMatchers.cpp ----------------------------------------------===//
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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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#include "FPExceptMatcher.h"
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#include "src/__support/macros/config.h"
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#include "test/UnitTest/ExecuteFunction.h" // FunctionCaller
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#include "test/UnitTest/Test.h"
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#include "hdr/types/fenv_t.h"
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#include "src/__support/FPUtil/FEnvImpl.h"
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#include <setjmp.h>
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#include <signal.h>
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#if LIBC_TEST_HAS_MATCHERS()
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namespace LIBC_NAMESPACE_DECL {
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namespace testing {
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#if defined(_WIN32)
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#define sigjmp_buf jmp_buf
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#define sigsetjmp(buf, save) setjmp(buf)
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#define siglongjmp(buf, val) longjmp(buf, val)
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#endif
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static thread_local sigjmp_buf jumpBuffer;
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static thread_local bool caughtExcept;
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static void sigfpeHandler(int sig) {
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caughtExcept = true;
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siglongjmp(jumpBuffer, -1);
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}
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FPExceptMatcher::FPExceptMatcher(FunctionCaller *func) {
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auto *oldSIGFPEHandler = signal(SIGFPE, &sigfpeHandler);
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caughtExcept = false;
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fenv_t oldEnv;
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fputil::get_env(&oldEnv);
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if (sigsetjmp(jumpBuffer, 1) == 0)
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func->call();
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delete func;
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// We restore the previous floating point environment after
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// the call to the function which can potentially raise SIGFPE.
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fputil::set_env(&oldEnv);
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signal(SIGFPE, oldSIGFPEHandler);
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exceptionRaised = caughtExcept;
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}
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} // namespace testing
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} // namespace LIBC_NAMESPACE_DECL
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#endif // LIBC_TEST_HAS_MATCHERS()
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