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

bojle · web-flow · commit 51427079f73d · 2025-10-26T16:40:01.000-04:00
Fixes: #164653 Signed-off-by: Shreeyash Pandey <shreeyash335@gmail.com>
diff --git 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

Original file line number	Diff line number	Diff line change
`@@ -41,7 +41,7 @@ LLVM_LIBC_FUNCTION(int, sigsetjmp, (sigjmp_buf buf)) {`
`41`	`41`	`[epilogue] "X"(sigsetjmp_epilogue)`
`42`	`42`	`: "eax", "ebx", "ecx");`
`43`	`43`	`}`
`44`		`-#endif`
	`44`	`+#else`
`45`	`45`	`[[gnu::naked]]`
`46`	`46`	`LLVM_LIBC_FUNCTION(int, sigsetjmp, (sigjmp_buf, int)) {`
`47`	`47`	`asm(R"(`
`@@ -64,5 +64,6 @@ LLVM_LIBC_FUNCTION(int, sigsetjmp, (sigjmp_buf, int)) {`
`64`	`64`	`[epilogue] "X"(sigsetjmp_epilogue)`
`65`	`65`	`: "rax", "rbx");`
`66`	`66`	`}`
	`67`	`+#endif`
`67`	`68`
`68`	`69`	`} // namespace LIBC_NAMESPACE_DECL`