diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp
--- a/compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp
@@ -1182,7 +1182,7 @@
   return err ? 0 : vm_info.max_address;
 }
 
-uptr GetMaxUserVirtualAddress() {
+static uptr GetMaxUserVirtualAddressImpl() {
   static uptr max_vm = GetTaskInfoMaxAddress();
   if (max_vm != 0)
     return max_vm - 1;
@@ -1197,7 +1197,7 @@
 
 #else // !SANITIZER_IOS
 
-uptr GetMaxUserVirtualAddress() {
+static uptr GetMaxUserVirtualAddressImpl() {
 # if SANITIZER_WORDSIZE == 64
   return (1ULL << 47) - 1;  // 0x00007fffffffffffUL;
 # else // SANITIZER_WORDSIZE == 32
@@ -1207,6 +1207,12 @@
 }
 #endif
 
+uptr GetMaxUserVirtualAddress() {
+  static uptr max_vm = GetMaxUserVirtualAddressImpl();
+  CHECK_LE(max_vm, SANITIZER_MMAP_RANGE_SIZE);
+  return max_vm;
+}
+
 uptr GetMaxVirtualAddress() {
   return GetMaxUserVirtualAddress();
 }