diff --git a/cc/config/clang.go b/cc/config/clang.go
index 89e567d..46d8528 100644
--- a/cc/config/clang.go
+++ b/cc/config/clang.go
@@ -91,7 +91,9 @@
 	"-Wl,-m,aarch64_elf64_le_vec",
 })
 
-var ClangLibToolingUnknownCflags []string = nil
+var ClangLibToolingUnknownCflags = sorted([]string{
+	"-fno-sanitize=implicit-integer-sign-change",
+})
 
 func init() {
 	pctx.StaticVariable("ClangExtraCflags", strings.Join([]string{