http://llvm.org/bugs/show_bug.cgi?id=19172
Bug ID: 19172
Summary: [Windows] Wrong this adjustment calculated for virtual
destructor in a class with complex inheritance
Product: clang
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: normal
Priority: P
Component: C++
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected]
Classification: Unclassified
Repro:
--------------------------------
#include "common.h"
struct A {
virtual ~A() {}
int a;
};
struct B : virtual A {
virtual ~B() {}
int b;
};
struct C : virtual A {
virtual ~C() {}
void destroy();
int c;
};
struct D : B, C {
virtual ~D() {}
int d;
};
struct E {
virtual ~E() {}
int e;
};
struct F : D, E {
virtual ~F();
int f;
};
extern int d_dtor_calls;
#ifdef CONFIG_1
F::~F() {
CHECK_EQ(1, a);
CHECK_EQ(2, b);
CHECK_EQ(3, c);
CHECK_EQ(4, d);
CHECK_EQ(5, e);
CHECK_EQ(6, f);
d_dtor_calls++;
}
#else
int d_dtor_calls = 0;
void C::destroy() {
delete this;
}
int main() {
F *obj = new F;
obj->a = 1;
obj->b = 2;
obj->c = 3;
obj->d = 4;
obj->e = 5;
obj->f = 6;
obj->destroy();
CHECK_EQ(1, d_dtor_calls);
}
#endif
-------------------------------
If the F::~F() is compiled with Clang and everything else with CL, the program
segfaults.
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