Add unit test for isLayoutIdentical(empty, empty).

It was previously asserting in Visual C++ debug mode on a null
iterator passed to std::equal.

Test by Hans Wennborg!

llvm-svn: 245270

1 files changed, 8 insertions, 0 deletions

diff --git a/llvm/unittests/IR/TypesTest.cpp b/llvm/unittests/IR/TypesTest.cpp
index 2cee640a13d..b4dbf8ec2c7 100644
--- a/llvm/unittests/IR/TypesTest.cpp
+++ b/llvm/unittests/IR/TypesTest.cpp
@@ -27,4 +27,12 @@ TEST(TypesTest, StructType) {
   EXPECT_FALSE(Struct->hasName());
 }
 
+TEST(TypesTest, LayoutIdenticalEmptyStructs) {

+  LLVMContext C;

+

+  StructType *Foo = StructType::create(C, "Foo");

+  StructType *Bar = StructType::create(C, "Bar");

+  EXPECT_TRUE(Foo->isLayoutIdentical(Bar));

+}

+
 }  // end anonymous namespace