http://llvm.org/bugs/show_bug.cgi?id=12798
Bug #: 12798
Summary: Invalid destructor invoked
Product: clang
Version: trunk
Platform: PC
OS/Version: All
Status: NEW
Severity: normal
Priority: P
Component: C++
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected], [email protected]
Classification: Unclassified
Created attachment 8535
--> http://llvm.org/bugs/attachment.cgi?id=8535
Testcase
Consider the testcase attached.
g++ binary prints:
B::Bar started
B dtor!
A dtor!
A::Bar started
A dtor!
A::Bar finished
B::Bar finished
Foo dtor!
B dtor!
A dtor!
clang++ binary prints:
B::Bar started
Foo dtor! (*)
B dtor!
A dtor!
A::Bar started
B dtor!
A dtor!
A::Bar finished
B::Bar finished
Foo dtor! (*)
B dtor!
A dtor!
Note that in clang's case we have extra Foo dtor calls (*). It seems to me that
this is due to clang's not fixing the vtable before pseudo-destructor call and
thus dtor of derived class is invoked instead of dtor of base class.
PS: Note that g++ is also able to devirtualize dtor call here.
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