diff --git a/libc/src/setjmp/x86_64/CMakeLists.txt b/libc/src/setjmp/x86_64/CMakeLists.txt
index 9899c00e7c4a65..ae84322a654010 100644
--- a/libc/src/setjmp/x86_64/CMakeLists.txt
+++ b/libc/src/setjmp/x86_64/CMakeLists.txt
@@ -9,6 +9,11 @@ add_entrypoint_object(
   COMPILE_OPTIONS
     -O3
     -fno-omit-frame-pointer
+    # TODO: Remove once one of these lands:
+    # https://github.com/llvm/llvm-project/pull/87837
+    # https://github.com/llvm/llvm-project/pull/88054
+    # https://github.com/llvm/llvm-project/pull/88157
+    -ftrivial-auto-var-init=uninitialized
 )
 
 add_entrypoint_object(