forked from OSchip/llvm-project
75 lines
2.0 KiB
C++
75 lines
2.0 KiB
C++
// RUN: %clangxx_cfi -o %t1 %s
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// RUN: %expect_crash %t1 2>&1 | FileCheck --check-prefix=CFI %s
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// RUN: %expect_crash %t1 x 2>&1 | FileCheck --check-prefix=CFI %s
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// RUN: %clangxx_cfi -DB32 -o %t2 %s
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// RUN: %expect_crash %t2 2>&1 | FileCheck --check-prefix=CFI %s
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// RUN: %expect_crash %t2 x 2>&1 | FileCheck --check-prefix=CFI %s
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// RUN: %clangxx_cfi -DB64 -o %t3 %s
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// RUN: %expect_crash %t3 2>&1 | FileCheck --check-prefix=CFI %s
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// RUN: %expect_crash %t3 x 2>&1 | FileCheck --check-prefix=CFI %s
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// RUN: %clangxx_cfi -DBM -o %t4 %s
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// RUN: %expect_crash %t4 2>&1 | FileCheck --check-prefix=CFI %s
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// RUN: %expect_crash %t4 x 2>&1 | FileCheck --check-prefix=CFI %s
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// RUN: %clangxx -o %t5 %s
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// RUN: %t5 2>&1 | FileCheck --check-prefix=NCFI %s
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// RUN: %t5 x 2>&1 | FileCheck --check-prefix=NCFI %s
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// RUN: %clangxx_cfi_diag -o %t6 %s
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// RUN: %t6 2>&1 | FileCheck --check-prefix=CFI-DIAG2 %s
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// RUN: %t6 x 2>&1 | FileCheck --check-prefix=CFI-DIAG1 %s
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// Tests that the CFI mechanism is sensitive to multiple inheritance and only
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// permits calls via virtual tables for the correct base class.
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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 f() = 0;
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};
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struct B {
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virtual void g() = 0;
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};
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struct C : A, B {
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virtual void f(), g();
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};
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void C::f() {}
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void C::g() {}
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int main(int argc, char **argv) {
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create_derivers<A>();
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create_derivers<B>();
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C *c = new C;
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break_optimization(c);
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// CFI: 1
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// NCFI: 1
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fprintf(stderr, "1\n");
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if (argc > 1) {
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A *a = c;
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// CFI-DIAG1: runtime error: control flow integrity check for type 'B' failed during cast to unrelated type
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// CFI-DIAG1-NEXT: note: vtable is of type '{{(struct )?}}C'
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((B *)a)->g(); // UB here
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} else {
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// CFI-DIAG2: runtime error: control flow integrity check for type 'A' failed during cast to unrelated type
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// CFI-DIAG2-NEXT: note: vtable is of type '{{(struct )?}}C'
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B *b = c;
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((A *)b)->f(); // UB here
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}
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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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