| //===-- Unittests for feholdexcept with exceptions enabled ----------------===// |
| // |
| // 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 |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "src/fenv/feholdexcept.h" |
| |
| #include "utils/FPUtil/FEnv.h" |
| #include "utils/UnitTest/Test.h" |
| |
| #include <fenv.h> |
| #include <signal.h> |
| |
| TEST(LlvmLibcFEnvTest, RaiseAndCrash) { |
| int excepts[] = {FE_DIVBYZERO, FE_INVALID, FE_INEXACT, FE_OVERFLOW, |
| FE_UNDERFLOW}; |
| |
| for (int e : excepts) { |
| fenv_t env; |
| __llvm_libc::fputil::disableExcept(FE_ALL_EXCEPT); |
| __llvm_libc::fputil::enableExcept(e); |
| ASSERT_EQ(__llvm_libc::fputil::clearExcept(FE_ALL_EXCEPT), 0); |
| ASSERT_EQ(__llvm_libc::feholdexcept(&env), 0); |
| // feholdexcept should disable all excepts so raising an exception |
| // should not crash/invoke the exception handler. |
| ASSERT_EQ(__llvm_libc::fputil::raiseExcept(e), 0); |
| |
| // When we put back the saved env which has the exception enabled, it |
| // should crash with SIGFPE. |
| __llvm_libc::fputil::setEnv(&env); |
| ASSERT_DEATH([=] { __llvm_libc::fputil::raiseExcept(e); }, |
| WITH_SIGNAL(SIGFPE)); |
| } |
| } |