| //===-- Implementation header for setjmp ------------------------*- C++ -*-===// |
| // |
| // 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 |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_LIBC_SRC_SETJMP_SETJMP_IMPL_H |
| #define LLVM_LIBC_SRC_SETJMP_SETJMP_IMPL_H |
| |
| // This header has the _impl prefix in its name to avoid conflict with the |
| // public header setjmp.h which is also included. here. |
| #include "hdr/types/jmp_buf.h" |
| #include "src/__support/macros/config.h" |
| #include "src/__support/macros/properties/compiler.h" |
| |
| namespace LIBC_NAMESPACE_DECL { |
| |
| // TODO(https://github.com/llvm/llvm-project/issues/112427) |
| // Some of the architecture-specific definitions are marked `naked`, which in |
| // GCC implies `nothrow`. |
| // |
| // Right now, our aliases aren't marked `nothrow`, so we wind up in a situation |
| // where clang will emit -Wmissing-exception-spec if we add `nothrow` here, but |
| // GCC will emit -Wmissing-attributes here without `nothrow`. We need to update |
| // LLVM_LIBC_FUNCTION to denote when a function throws or not. |
| |
| #ifdef LIBC_COMPILER_IS_GCC |
| [[gnu::nothrow]] |
| #endif |
| [[gnu::returns_twice]] int |
| setjmp(jmp_buf buf); |
| |
| } // namespace LIBC_NAMESPACE_DECL |
| |
| #endif // LLVM_LIBC_SRC_SETJMP_SETJMP_IMPL_H |
