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// RUN: %clangxx_cfi -o %t %s
// RUN: not --crash %t 2>&1 | FileCheck --check-prefix=CFI %s
// RUN: not --crash %t x 2>&1 | FileCheck --check-prefix=CFI %s
// RUN: %clangxx_cfi -DB32 -o %t %s
// RUN: not --crash %t 2>&1 | FileCheck --check-prefix=CFI %s
// RUN: not --crash %t x 2>&1 | FileCheck --check-prefix=CFI %s
// RUN: %clangxx_cfi -DB64 -o %t %s
// RUN: not --crash %t 2>&1 | FileCheck --check-prefix=CFI %s
// RUN: not --crash %t x 2>&1 | FileCheck --check-prefix=CFI %s
// RUN: %clangxx_cfi -DBM -o %t %s
// RUN: not --crash %t 2>&1 | FileCheck --check-prefix=CFI %s
// RUN: not --crash %t x 2>&1 | FileCheck --check-prefix=CFI %s
// RUN: %clangxx -o %t %s
// RUN: %t 2>&1 | FileCheck --check-prefix=NCFI %s
// RUN: %t x 2>&1 | FileCheck --check-prefix=NCFI %s
// Tests that the CFI mechanism is sensitive to multiple inheritance and only
// permits calls via virtual tables for the correct base class.
#include <stdio.h>
#include "utils.h"
struct A {
virtual void f() = 0;
};
struct B {
virtual void g() = 0;
};
struct C : A, B {
virtual void f(), g();
};
void C::f() {}
void C::g() {}
int main(int argc, char **argv) {
#ifdef B32
break_optimization(new Deriver<A, 0>);
break_optimization(new Deriver<B, 0>);
#endif
#ifdef B64
break_optimization(new Deriver<A, 0>);
break_optimization(new Deriver<A, 1>);
break_optimization(new Deriver<B, 0>);
break_optimization(new Deriver<B, 1>);
#endif
#ifdef BM
break_optimization(new Deriver<A, 0>);
break_optimization(new Deriver<A, 1>);
break_optimization(new Deriver<A, 2>);
break_optimization(new Deriver<B, 0>);
break_optimization(new Deriver<B, 1>);
break_optimization(new Deriver<B, 2>);
#endif
C *c = new C;
break_optimization(c);
// CFI: 1
// NCFI: 1
fprintf(stderr, "1\n");
if (argc > 1) {
A *a = c;
((B *)a)->g(); // UB here
} else {
B *b = c;
((A *)b)->f(); // UB here
}
// CFI-NOT: 2
// NCFI: 2
fprintf(stderr, "2\n");
}
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