Index: llvm/utils/unittest/googletest/src/gtest-death-test.cc
===================================================================
--- llvm/utils/unittest/googletest/src/gtest-death-test.cc
+++ llvm/utils/unittest/googletest/src/gtest-death-test.cc
@@ -1070,7 +1070,7 @@
 
   if (!use_fork) {
     static const bool stack_grows_down = StackGrowsDown();
-    const size_t stack_size = getpagesize();
+    const size_t stack_size = std::max(getpagesize(), 8192);
     // MMAP_ANONYMOUS is not defined on Mac, so we use MAP_ANON instead.
     void* const stack = mmap(NULL, stack_size, PROT_READ | PROT_WRITE,
                              MAP_ANON | MAP_PRIVATE, -1, 0);