[libc-commits] [libc] [libc] implement sigsetjmp/siglongjmp for x86-64 (PR #136072)

[via libc-commits]

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@@ -0,0 +1,25 @@
+//===-- Implementation header for sigsetjmp ---------------------*- 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_SIGSETJMP_H
+#define LLVM_LIBC_SRC_SETJMP_SIGSETJMP_H
+
+#include "hdr/types/jmp_buf.h"
+#include "src/__support/macros/config.h"
+#include "src/__support/macros/properties/compiler.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+#ifdef LIBC_COMPILER_IS_GCC
+[[gnu::nothrow]]
+#endif
+__attribute__((returns_twice)) int sigsetjmp(sigjmp_buf buf, int savesigs);
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lntue wrote:

Why do we have 2 different attribute styles here?

https://github.com/llvm/llvm-project/pull/136072