[libc-commits] [libc] [libc] Fix ucontext buildbot failure with noexcept (#192343) (PR #192601)

via libc-commits libc-commits at lists.llvm.org
Thu Apr 16 23:35:15 PDT 2026


github-actions[bot] wrote:

<!--LLVM CODE FORMAT COMMENT: {clang-format}-->


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<details>
<summary>
You can test this locally with the following command:
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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp,h -- libc/src/ucontext/getcontext.h libc/src/ucontext/setcontext.h libc/src/ucontext/x86_64/getcontext.cpp libc/src/ucontext/x86_64/setcontext.cpp --diff_from_common_commit
``````````

:warning:
The reproduction instructions above might return results for more than one PR
in a stack if you are using a stacked PR workflow. You can limit the results by
changing `origin/main` to the base branch/commit you want to compare against.
:warning:

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<summary>
View the diff from clang-format here.
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``````````diff
diff --git a/libc/src/ucontext/x86_64/getcontext.cpp b/libc/src/ucontext/x86_64/getcontext.cpp
index 284b16772..26fce6447 100644
--- a/libc/src/ucontext/x86_64/getcontext.cpp
+++ b/libc/src/ucontext/x86_64/getcontext.cpp
@@ -19,7 +19,8 @@ namespace LIBC_NAMESPACE_DECL {
 
 // We use naked because we need to capture the exact register state
 // at the moment of the function call, avoiding any compiler prologue/epilogue.
-__attribute__((naked)) LLVM_LIBC_FUNCTION(int, getcontext, (ucontext_t * ucp)) noexcept {
+__attribute__((naked)) LLVM_LIBC_FUNCTION(int, getcontext,
+                                          (ucontext_t * ucp)) noexcept {
   asm(R"(
       # ucp is in rdi
       

``````````

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https://github.com/llvm/llvm-project/pull/192601


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