http://llvm.org/bugs/show_bug.cgi?id=21046
Bug ID: 21046
Summary: MS ABI: Extra vtordisp inserted
Product: clang
Version: unspecified
Hardware: PC
OS: Windows NT
Status: NEW
Severity: normal
Priority: P
Component: LLVM Codegen
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
consider:
struct __declspec(dllexport) A {
virtual void f();
};
struct __declspec(dllexport) B : virtual A {
virtual void f() = 0;
B() {}
};
struct __declspec(dllexport) C : virtual B { };
we get the following:
--- different.cpp_clang.obj.dump 2014-09-23 15:09:04.840112200 -0700
+++ different.cpp_vs.obj.dump 2014-09-23 15:09:04.900112200 -0700
@@ -2,9 +2,9 @@
const B::`vftable'[0]: __purecall
const C::`vftable'[0]: __purecall
const B::`vbtable'[0]: 0
-const B::`vbtable'[4]: 8
+const B::`vbtable'[4]: 4
const C::`vbtable'{for `C'}[0]: 0
-const C::`vbtable'{for `C'}[4]: 8
-const C::`vbtable'{for `C'}[8]: 12
+const C::`vbtable'{for `C'}[4]: 4
+const C::`vbtable'{for `C'}[8]: 8
const C::`vbtable'{for `B'}[0]: 0
const C::`vbtable'{for `B'}[4]: -4
It appears that we thinkg B needs a vtordisp even though it overrides a method
in A with a pure virtual function.
--
You are receiving this mail because:
You are on the CC list for the bug.
_______________________________________________
LLVMbugs mailing list
[email protected]
http://lists.cs.uiuc.edu/mailman/listinfo/llvmbugs
