73 lines
1.6 KiB
C++
73 lines
1.6 KiB
C++
// RUN: %clangxx_cfi -o %t %s
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// RUN: not --crash %t 2>&1 | FileCheck --check-prefix=CFI %s
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// RUN: %clangxx_cfi -DB32 -o %t %s
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// RUN: not --crash %t 2>&1 | FileCheck --check-prefix=CFI %s
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// RUN: %clangxx_cfi -DB64 -o %t %s
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// RUN: not --crash %t 2>&1 | FileCheck --check-prefix=CFI %s
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// RUN: %clangxx_cfi -DBM -o %t %s
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// RUN: not --crash %t 2>&1 | FileCheck --check-prefix=CFI %s
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// RUN: %clangxx -o %t %s
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// RUN: %t 2>&1 | FileCheck --check-prefix=NCFI %s
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// RUN: %clangxx_cfi_diag -o %t %s
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// RUN: %t 2>&1 | FileCheck --check-prefix=CFI-DIAG %s
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// Tests that the CFI mechanism crashes the program when making a non-virtual
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// call to an object of the wrong class, by casting a pointer to such an object
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// and attempting to make a call through it.
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// REQUIRES: cxxabi
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#include <stdio.h>
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#include "utils.h"
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struct A {
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virtual void v();
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};
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void A::v() {}
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struct B {
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void f();
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virtual void g();
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};
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void B::f() {}
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void B::g() {}
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int main() {
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#ifdef B32
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break_optimization(new Deriver<B, 0>);
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#endif
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#ifdef B64
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break_optimization(new Deriver<B, 0>);
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break_optimization(new Deriver<B, 1>);
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#endif
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#ifdef BM
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break_optimization(new Deriver<B, 0>);
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break_optimization(new Deriver<B, 1>);
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break_optimization(new Deriver<B, 2>);
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#endif
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A *a = new A;
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break_optimization(a);
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// CFI: 1
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// NCFI: 1
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fprintf(stderr, "1\n");
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// CFI-DIAG: runtime error: control flow integrity check for type 'B' failed during non-virtual call
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// CFI-DIAG-NEXT: note: vtable is of type 'A'
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((B *)a)->f(); // UB here
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// CFI-NOT: 2
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// NCFI: 2
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fprintf(stderr, "2\n");
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}
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