Use mmap for compiled code for gtest.

Avoid executing code in memory allocated with malloc() as
pointers to that memory can be tagged which interferes with
managed stack walk.

Test: m test-art-host-gtest.
Bug: 177816575
Change-Id: Id376091f82d5686adf3ab18d2980a42e78de57ce

1 files changed, 10 insertions, 2 deletions

diff --git a/compiler/optimizing/codegen_test_utils.h b/compiler/optimizing/codegen_test_utils.h
index 9d15f1f294..397e601cee 100644
--- a/compiler/optimizing/codegen_test_utils.h
+++ b/compiler/optimizing/codegen_test_utils.h
@@ -248,9 +248,17 @@ static void Run(const InternalCodeAllocator& allocator,
                 Expected expected) {
   InstructionSet target_isa = codegen.GetInstructionSet();
 
+  struct CodeHolder : CommonCompilerTestImpl {
+   protected:
+    ClassLinker* GetClassLinker() override { return nullptr; }
+    Runtime* GetRuntime() override { return nullptr; }
+  };
+  CodeHolder code_holder;
+  const void* code_ptr =
+      code_holder.MakeExecutable(allocator.GetMemory(), ArrayRef<const uint8_t>(), target_isa);
+
   typedef Expected (*fptr)();
-  CommonCompilerTest::MakeExecutable(allocator.GetMemory().data(), allocator.GetMemory().size());
-  fptr f = reinterpret_cast<fptr>(reinterpret_cast<uintptr_t>(allocator.GetMemory().data()));
+  fptr f = reinterpret_cast<fptr>(reinterpret_cast<uintptr_t>(code_ptr));
   if (target_isa == InstructionSet::kThumb2) {
     // For thumb we need the bottom bit set.
     f = reinterpret_cast<fptr>(reinterpret_cast<uintptr_t>(f) + 1);