1 files changed, 4 insertions, 3 deletions
diff --git a/compiler-rt/test/esan/TestCases/workingset-memset.cpp b/compiler-rt/test/esan/TestCases/workingset-memset.cpp
index 0c5db693530..a0c36e3aebc 100644
--- a/compiler-rt/test/esan/TestCases/workingset-memset.cpp
+++ b/compiler-rt/test/esan/TestCases/workingset-memset.cpp
@@ -8,12 +8,13 @@
 #include <string.h>
 
 int main(int argc, char **argv) {
-  const int iters = 630;
-  const int size = 64*iters;
-  char *p = (char *)malloc(size);
+  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