1 files changed, 21 insertions, 0 deletions
diff --git a/compiler-rt/test/esan/TestCases/workingset-memset.cpp b/compiler-rt/test/esan/TestCases/workingset-memset.cpp
new file mode 100644
index 00000000000..a0c36e3aebc
--- /dev/null
+++ b/compiler-rt/test/esan/TestCases/workingset-memset.cpp
@@ -0,0 +1,21 @@
+// RUN: %clang_esan_wset -O0 %s -o %t 2>&1
+// RUN: %run %t 2>&1 | FileCheck %s
+
+#include <stdlib.h>
+#include <string.h>
+#include <sys/mman.h>
+#include <assert.h>
+#include <string.h>
+
+int main(int argc, char **argv) {
+  const int size = 128*1024*1024;
+  char *p = (char *)mmap(0, size, PROT_READ | PROT_WRITE,
+                         MAP_ANON | MAP_PRIVATE, -1, 0);
+  // Test the slowpath at different cache line boundaries.
+  for (int i = 0; i < 630; i++)
+    memset((char *)p + 63*i, i, 63*i);
+  munmap(p, size);
+  return 0;
+  // FIXME: once the memory scan and size report is in place add it here.
+  // CHECK: {{.*}}EfficiencySanitizer is not finished: nothing yet to report
+}