[libc-commits] [libc] [libc] fix architecture guarding for 32bit sigsetjmp (PR #164923)

via libc-commits libc-commits at lists.llvm.org
Thu Oct 23 20:47:48 PDT 2025


llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-libc

Author: Shreeyash Pandey (bojle)

<details>
<summary>Changes</summary>

Fixes: https://github.com/llvm/llvm-project/issues/164653

---
Full diff: https://github.com/llvm/llvm-project/pull/164923.diff


1 Files Affected:

- (modified) libc/src/setjmp/x86_64/sigsetjmp.cpp (+2-1) 


``````````diff
diff --git a/libc/src/setjmp/x86_64/sigsetjmp.cpp b/libc/src/setjmp/x86_64/sigsetjmp.cpp
index 4c97a01822679..2bad053c166ee 100644
--- a/libc/src/setjmp/x86_64/sigsetjmp.cpp
+++ b/libc/src/setjmp/x86_64/sigsetjmp.cpp
@@ -41,7 +41,7 @@ LLVM_LIBC_FUNCTION(int, sigsetjmp, (sigjmp_buf buf)) {
       [epilogue] "X"(sigsetjmp_epilogue)
       : "eax", "ebx", "ecx");
 }
-#endif
+#else
 [[gnu::naked]]
 LLVM_LIBC_FUNCTION(int, sigsetjmp, (sigjmp_buf, int)) {
   asm(R"(
@@ -64,5 +64,6 @@ LLVM_LIBC_FUNCTION(int, sigsetjmp, (sigjmp_buf, int)) {
       [epilogue] "X"(sigsetjmp_epilogue)
       : "rax", "rbx");
 }
+#endif
 
 } // namespace LIBC_NAMESPACE_DECL

``````````

</details>


https://github.com/llvm/llvm-project/pull/164923


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