diff --git a/compiler-rt/lib/msan/msan_allocator.cpp b/compiler-rt/lib/msan/msan_allocator.cpp
--- a/compiler-rt/lib/msan/msan_allocator.cpp
+++ b/compiler-rt/lib/msan/msan_allocator.cpp
@@ -220,8 +220,8 @@
   }
 }
 
-void *MsanReallocate(StackTrace *stack, void *old_p, uptr new_size,
-                     uptr alignment) {
+static void *MsanReallocate(StackTrace *stack, void *old_p, uptr new_size,
+                            uptr alignment) {
   Metadata *meta = reinterpret_cast<Metadata*>(allocator.GetMetaData(old_p));
   uptr old_size = meta->requested_size;
   uptr actually_allocated_size = allocator.GetActuallyAllocatedSize(old_p);
@@ -245,7 +245,7 @@
   return new_p;
 }
 
-void *MsanCalloc(StackTrace *stack, uptr nmemb, uptr size) {
+static void *MsanCalloc(StackTrace *stack, uptr nmemb, uptr size) {
   if (UNLIKELY(CheckForCallocOverflow(size, nmemb))) {
     if (AllocatorMayReturnNull())
       return nullptr;