diff --git a/compiler-rt/lib/scudo/standalone/CMakeLists.txt b/compiler-rt/lib/scudo/standalone/CMakeLists.txt
--- a/compiler-rt/lib/scudo/standalone/CMakeLists.txt
+++ b/compiler-rt/lib/scudo/standalone/CMakeLists.txt
@@ -7,6 +7,8 @@
 list(APPEND SCUDO_CFLAGS
   -Werror=conversion
   -Wall
+  -Wextra
+  -pedantic
   -g
   -nostdinc++)
 
diff --git a/compiler-rt/lib/scudo/standalone/common.h b/compiler-rt/lib/scudo/standalone/common.h
--- a/compiler-rt/lib/scudo/standalone/common.h
+++ b/compiler-rt/lib/scudo/standalone/common.h
@@ -101,7 +101,7 @@
 
 // Hardware specific inlinable functions.
 
-inline void yieldProcessor(u8 Count) {
+inline void yieldProcessor(UNUSED u8 Count) {
 #if defined(__i386__) || defined(__x86_64__)
   __asm__ __volatile__("" ::: "memory");
   for (u8 I = 0; I < Count; I++)