6695976d16
Reland `sigsetjmp` patches with build fixes. We wrap every target replying on the epilogue library into conditional checks. --------- Co-authored-by: Petr Hosek <phosek@google.com>
38 lines
1.4 KiB
C++
38 lines
1.4 KiB
C++
//===-- Implementation header for setjmp ------------------------*- 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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#ifndef LLVM_LIBC_SRC_SETJMP_SETJMP_IMPL_H
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#define LLVM_LIBC_SRC_SETJMP_SETJMP_IMPL_H
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// This header has the _impl prefix in its name to avoid conflict with the
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// public header setjmp.h which is also included. here.
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#include "hdr/types/jmp_buf.h"
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#include "src/__support/macros/config.h"
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#include "src/__support/macros/properties/compiler.h"
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namespace LIBC_NAMESPACE_DECL {
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// TODO(https://github.com/llvm/llvm-project/issues/112427)
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// Some of the architecture-specific definitions are marked `naked`, which in
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// GCC implies `nothrow`.
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//
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// Right now, our aliases aren't marked `nothrow`, so we wind up in a situation
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// where clang will emit -Wmissing-exception-spec if we add `nothrow` here, but
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// GCC will emit -Wmissing-attributes here without `nothrow`. We need to update
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// LLVM_LIBC_FUNCTION to denote when a function throws or not.
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#ifdef LIBC_COMPILER_IS_GCC
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[[gnu::nothrow]]
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#endif
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[[gnu::returns_twice]] int
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setjmp(jmp_buf buf);
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} // namespace LIBC_NAMESPACE_DECL
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#endif // LLVM_LIBC_SRC_SETJMP_SETJMP_IMPL_H
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