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1 | //===-- Implementation header for setjmp ------------------------*- C++ -*-===// |
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2 | // |
3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
4 | // See https://llvm.org/LICENSE.txt for license information. |
5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
6 | // |
7 | //===----------------------------------------------------------------------===// |
8 | |
9 | #ifndef LLVM_LIBC_SRC_SETJMP_SETJMP_IMPL_H |
10 | #define LLVM_LIBC_SRC_SETJMP_SETJMP_IMPL_H |
11 | |
12 | // This header has the _impl prefix in its name to avoid conflict with the |
13 | // public header setjmp.h which is also included. here. |
14 | #include "hdr/types/jmp_buf.h" |
15 | #include "src/__support/macros/config.h" |
16 | #include "src/__support/macros/properties/compiler.h" |
17 | |
18 | namespace LIBC_NAMESPACE_DECL { |
19 | |
20 | // TODO(https://github.com/llvm/llvm-project/issues/112427) |
21 | // Some of the architecture-specific definitions are marked `naked`, which in |
22 | // GCC implies `nothrow`. |
23 | // |
24 | // Right now, our aliases aren't marked `nothrow`, so we wind up in a situation |
25 | // where clang will emit -Wmissing-exception-spec if we add `nothrow` here, but |
26 | // GCC will emit -Wmissing-attributes here without `nothrow`. We need to update |
27 | // LLVM_LIBC_FUNCTION to denote when a function throws or not. |
28 | |
29 | #ifdef LIBC_COMPILER_IS_GCC |
30 | [[gnu::nothrow]] |
31 | #endif |
32 | [[gnu::returns_twice]] int |
33 | setjmp(jmp_buf buf); |
34 | |
35 | } // namespace LIBC_NAMESPACE_DECL |
36 | |
37 | #endif // LLVM_LIBC_SRC_SETJMP_SETJMP_IMPL_H |
38 |
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