diff --git a/compiler-rt/lib/scudo/standalone/tests/combined_test.cpp b/compiler-rt/lib/scudo/standalone/tests/combined_test.cpp
--- a/compiler-rt/lib/scudo/standalone/tests/combined_test.cpp
+++ b/compiler-rt/lib/scudo/standalone/tests/combined_test.cpp
@@ -117,7 +117,7 @@
   // class size maps.
   P = Allocator->allocate(DataSize, Origin);
   memset(P, Marker, DataSize);
-  for (scudo::sptr Delta = -32; Delta < 32; Delta += 8) {
+  for (scudo::sptr Delta = 32; Delta > -32; Delta -= 8) {
     const scudo::uptr NewSize = DataSize + Delta;
     void *NewP = Allocator->reallocate(P, NewSize);
     EXPECT_EQ(NewP, P);