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-rw-r--r--llvm/unittests/ADT/StringMapTest.cpp4
1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/unittests/ADT/StringMapTest.cpp b/llvm/unittests/ADT/StringMapTest.cpp
index 817fec6..1eac07b 100644
--- a/llvm/unittests/ADT/StringMapTest.cpp
+++ b/llvm/unittests/ADT/StringMapTest.cpp
@@ -17,6 +17,10 @@ using namespace llvm;
namespace {
+static_assert(sizeof(StringMap<uint32_t>) <
+ sizeof(StringMap<uint32_t, MallocAllocator &>),
+ "Ensure empty base optimization happens with default allocator");
+
// Test fixture
class StringMapTest : public testing::Test {
protected: