diff --git a/compiler-rt/test/asan/TestCases/wild_pointer.cpp b/compiler-rt/test/asan/TestCases/wild_pointer.cpp
--- a/compiler-rt/test/asan/TestCases/wild_pointer.cpp
+++ b/compiler-rt/test/asan/TestCases/wild_pointer.cpp
@@ -2,7 +2,9 @@
 // RUN: not %run %t 2>&1 | FileCheck %s
 // REQUIRES: asan-64-bits
 
+#include <inttypes.h>
 #include <stdarg.h>
+#include <stdint.h>
 #include <stdio.h>
 #include <string.h>
 
@@ -10,9 +12,17 @@
   char *p = new char;
   char *dest = new char;
   const size_t offset = 0x4567890123456789;
+
+  // The output here needs to match the output from the sanitizer runtime,
+  // which includes 0x and prints hex in lower case.
+  //
+  // On Windows, %p omits %0x and prints hex characters in upper case,
+  // so we use PRIxPTR instead of %p.
+  fprintf(stderr, "Expected bad addr: %#" PRIxPTR "\n",
+          reinterpret_cast<uintptr_t>(p + offset));
   // Flush it so the output came out before the asan report.
-  fprintf(stderr, "Expected bad addr: %p\n", p + offset);
   fflush(stderr);
+
   memmove(dest, p, offset);
   return 0;
 }