From 1d7d8da4cb81aa3f149e1e80811d72525eee15e3 Mon Sep 17 00:00:00 2001 From: David Blaikie Date: Thu, 24 Oct 2013 17:53:58 +0000 Subject: DIEHash: Do not use shallow type hashing for unnamed types git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193361 91177308-0d34-0410-b5e6-96231b3b80d8 --- unittests/CodeGen/DIEHashTest.cpp | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) (limited to 'unittests') diff --git a/unittests/CodeGen/DIEHashTest.cpp b/unittests/CodeGen/DIEHashTest.cpp index 32030c1509..8b198c7da3 100644 --- a/unittests/CodeGen/DIEHashTest.cpp +++ b/unittests/CodeGen/DIEHashTest.cpp @@ -442,4 +442,39 @@ TEST(DIEHashTest, PtrToMemberDeclDefMisMatch) { // and a definition in another. ASSERT_NE(MD5ResDef, MD5ResDecl); } + +// struct { } a; +// struct foo { decltype(a) mem; }; +TEST(DIEHashTest, RefUnnamedType) { + DIEInteger Zero(0); + DIEInteger One(1); + DIEInteger Eight(8); + DIEString FooStr(&Zero, "foo"); + DIEString MemStr(&Zero, "mem"); + + DIE Unnamed(dwarf::DW_TAG_structure_type); + Unnamed.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &One); + + DIE Foo(dwarf::DW_TAG_structure_type); + Foo.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Eight); + Foo.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &FooStr); + + DIE *Mem = new DIE(dwarf::DW_TAG_member); + Mem->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &MemStr); + Mem->addValue(dwarf::DW_AT_data_member_location, dwarf::DW_FORM_data1, &Zero); + + DIE UnnamedPtr(dwarf::DW_TAG_pointer_type); + UnnamedPtr.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Eight); + DIEEntry UnnamedRef(&Unnamed); + UnnamedPtr.addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &UnnamedRef); + + DIEEntry UnnamedPtrRef(&UnnamedPtr); + Mem->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &UnnamedPtrRef); + + Foo.addChild(Mem); + + uint64_t MD5Res = DIEHash().computeTypeSignature(&Foo); + + ASSERT_EQ(0x954e026f01c02529ULL, MD5Res); +} } -- cgit v1.2.3