diff --git a/compiler-rt/lib/scudo/standalone/tests/common_test.cpp b/compiler-rt/lib/scudo/standalone/tests/common_test.cpp
--- a/compiler-rt/lib/scudo/standalone/tests/common_test.cpp
+++ b/compiler-rt/lib/scudo/standalone/tests/common_test.cpp
@@ -29,7 +29,7 @@
 // Fuchsia needs getResidentMemorySize implementation.
 TEST(ScudoCommonTest, SKIP_ON_FUCHSIA(ResidentMemorySize)) {
   uptr OnStart = getResidentMemorySize();
-  EXPECT_GT(OnStart, 0);
+  EXPECT_GT(OnStart, 0UL);
 
   const uptr Size = 1ull << 30;
   const uptr Threshold = Size >> 3;
@@ -37,9 +37,9 @@
   MapPlatformData Data = {};
   uptr *P = reinterpret_cast<uptr *>(
       map(nullptr, Size, "ResidentMemorySize", 0, &Data));
-  const uptr N = Size / sizeof(*P);
+  const size_t N = Size / sizeof(*P);
   ASSERT_NE(nullptr, P);
-  EXPECT_EQ(std::count(P, P + N, 0), N);
+  EXPECT_EQ((size_t)std::count(P, P + N, 0), N);
   EXPECT_LT(getResidentMemorySize() - OnStart, Threshold);
 
   memset(P, 1, Size);
@@ -47,7 +47,7 @@
   EXPECT_LT(getResidentMemorySize() - Size, Threshold);
 
   releasePagesToOS((uptr)P, 0, Size, &Data);
-  EXPECT_EQ(std::count(P, P + N, 0), N);
+  EXPECT_EQ((size_t)std::count(P, P + N, 0), N);
   // FIXME: does not work with QEMU-user.
   // EXPECT_LT(getResidentMemorySize() - OnStart, Threshold);