diff --git a/compiler-rt/test/fuzzer/SimpleCmpTest.cpp b/compiler-rt/test/fuzzer/SimpleCmpTest.cpp
--- a/compiler-rt/test/fuzzer/SimpleCmpTest.cpp
+++ b/compiler-rt/test/fuzzer/SimpleCmpTest.cpp
@@ -18,20 +18,21 @@
 }
 
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
-  if (Size != 24) return 0;
+  if (Size != 21)
+    return 0;
   uint64_t x = 0;
   int64_t  y = 0;
   int32_t z = 0;
-  uint32_t a = 0;
+  uint8_t a = 0;
   memcpy(&x, Data, 8);  // 8
   memcpy(&y, Data + 8, 8);  // 16
   memcpy(&z, Data + 16, sizeof(z));  // 20
-  memcpy(&a, Data + 20, sizeof(a));  // 24
+  memcpy(&a, Data + 20, sizeof(a));  // 21
   const bool k32bit = sizeof(void*) == 4;
 
   if ((k32bit || x > 1234567890) && PrintOnce(__LINE__) &&
       (k32bit || x < 1234567895) && PrintOnce(__LINE__) &&
-      a == 0x4242 && PrintOnce(__LINE__) &&
+      a == 0x42 && PrintOnce(__LINE__) &&
       (k32bit || y >= 987654321) && PrintOnce(__LINE__) &&
       (k32bit || y <= 987654325) && PrintOnce(__LINE__) &&
       z < -10000 && PrintOnce(__LINE__) &&