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author | David Majnemer <david.majnemer@gmail.com> | 2015-05-02 05:12:53 +0000 |
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committer | David Majnemer <david.majnemer@gmail.com> | 2015-05-02 05:12:53 +0000 |
commit | 34eed3e07791e6299750353de2b35ba1a880d000 (patch) | |
tree | 1249d82b2a79a54c05b579df997b8f1da0bf8877 /test/CodeGenCXX/microsoft-abi-vtables-ambiguous.cpp | |
parent | 6cd4b9eda80ff04894257bf419c03553e532a99a (diff) |
[MS ABI] Add testcase which was missing from r236354
This test verifies that we can detect when the inheritance paths are
ambiguous due to covariant thunks, ensuring we don't regress PR16759.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@236381 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGenCXX/microsoft-abi-vtables-ambiguous.cpp')
-rw-r--r-- | test/CodeGenCXX/microsoft-abi-vtables-ambiguous.cpp | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/test/CodeGenCXX/microsoft-abi-vtables-ambiguous.cpp b/test/CodeGenCXX/microsoft-abi-vtables-ambiguous.cpp new file mode 100644 index 0000000000..c05fc172bc --- /dev/null +++ b/test/CodeGenCXX/microsoft-abi-vtables-ambiguous.cpp @@ -0,0 +1,44 @@ +// RUN: %clang_cc1 %s -emit-llvm-only -triple=i386-pc-win32 -verify -DTEST1 +// RUN: %clang_cc1 %s -emit-llvm-only -triple=i386-pc-win32 -verify -DTEST2 + +#ifdef TEST1 +struct A { + virtual A *foo(); // in vftable slot #0. + virtual A *bar(); // in vftable slot #1. +}; + +struct B : virtual A { + // appended to the A subobject's vftable in slot #2. + virtual B *foo(); // expected-note{{covariant thunk required by 'foo'}} +}; + +struct C : virtual A { + // appended to the A subobject's vftable in slot #2. + virtual C *bar(); // expected-note{{covariant thunk required by 'bar'}} +}; + +struct D : B, C { D(); }; // expected-error{{ambiguous vftable component}} +D::D() {} +#endif + +#ifdef TEST2 +struct A { + virtual A *foo(); // in vftable slot #0 +}; + +struct B : virtual A { + // appended to the A subobject's vftable in slot #1. + virtual B *foo(); // expected-note{{covariant thunk required by 'foo'}} +}; + +struct C : virtual A { + // appended to the A subobject's vftable in slot #1. + virtual C *foo(); // expected-note{{covariant thunk required by 'foo'}} +}; + +struct D : B, C { // expected-error{{ambiguous vftable component}} + virtual D *foo(); + D(); +}; +D::D() {} +#endif |