102 lines
3.3 KiB
C++
102 lines
3.3 KiB
C++
// RUN: %clangxx_cfi_dso -DSHARED_LIB %s -fPIC -shared -o %dynamiclib %ld_flags_rpath_so
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// RUN: %clangxx_cfi_dso %s -o %t %ld_flags_rpath_exe
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// RUN: %expect_crash %t 2>&1 | FileCheck --check-prefix=CFI %s
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// RUN: %expect_crash %t x 2>&1 | FileCheck --check-prefix=CFI-CAST %s
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// RUN: %clangxx_cfi_dso -DB32 -DSHARED_LIB %s -fPIC -shared -o %dynamiclib %ld_flags_rpath_so
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// RUN: %clangxx_cfi_dso -DB32 %s -o %t %ld_flags_rpath_exe
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// RUN: %expect_crash %t 2>&1 | FileCheck --check-prefix=CFI %s
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// RUN: %expect_crash %t x 2>&1 | FileCheck --check-prefix=CFI-CAST %s
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// RUN: %clangxx_cfi_dso -DB64 -DSHARED_LIB %s -fPIC -shared -o %dynamiclib %ld_flags_rpath_so
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// RUN: %clangxx_cfi_dso -DB64 %s -o %t %ld_flags_rpath_exe
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// RUN: %expect_crash %t 2>&1 | FileCheck --check-prefix=CFI %s
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// RUN: %expect_crash %t x 2>&1 | FileCheck --check-prefix=CFI-CAST %s
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// RUN: %clangxx_cfi_dso -DBM -DSHARED_LIB %s -fPIC -shared -o %dynamiclib %ld_flags_rpath_so
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// RUN: %clangxx_cfi_dso -DBM %s -o %t %ld_flags_rpath_exe
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// RUN: %expect_crash %t 2>&1 | FileCheck --check-prefix=CFI %s
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// RUN: %expect_crash %t x 2>&1 | FileCheck --check-prefix=CFI-CAST %s
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// RUN: %clangxx -DBM -DSHARED_LIB %s -fPIC -shared -o %dynamiclib %ld_flags_rpath_so
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// RUN: %clangxx -DBM %s -o %t %ld_flags_rpath_exe
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// RUN: %t 2>&1 | FileCheck --check-prefix=NCFI %s
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// RUN: %t x 2>&1 | FileCheck --check-prefix=NCFI %s
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// RUN: %clangxx -DBM -DSHARED_LIB %s -fPIC -shared -o %dynamiclib %ld_flags_rpath_so
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// RUN: %clangxx_cfi_dso -DBM %s -o %t %ld_flags_rpath_exe
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// RUN: %t 2>&1 | FileCheck --check-prefix=NCFI %s
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// RUN: %t x 2>&1 | FileCheck --check-prefix=NCFI %s
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// RUN: %clangxx_cfi_dso_diag -DSHARED_LIB %s -fPIC -shared -o %dynamiclib %ld_flags_rpath_so
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// RUN: %clangxx_cfi_dso_diag %s -o %t %ld_flags_rpath_exe
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// RUN: %t 2>&1 | FileCheck --check-prefix=CFI-DIAG-CALL %s
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// RUN: %t x 2>&1 | FileCheck --check-prefix=CFI-DIAG-CALL --check-prefix=CFI-DIAG-CAST %s
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// Tests that the CFI mechanism crashes the program when making a virtual call
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// to an object of the wrong class but with a compatible vtable, by casting a
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// pointer to such an object 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 <string.h>
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struct A {
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virtual void f();
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};
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void *create_B();
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#ifdef SHARED_LIB
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#include "../utils.h"
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struct B {
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virtual void f();
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};
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void B::f() {}
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void *create_B() {
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create_derivers<B>();
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return (void *)(new B());
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}
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#else
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void A::f() {}
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int main(int argc, char *argv[]) {
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void *p = create_B();
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A *a;
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// CFI: =0=
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// CFI-CAST: =0=
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// NCFI: =0=
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fprintf(stderr, "=0=\n");
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if (argc > 1 && argv[1][0] == 'x') {
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// Test cast. BOOM.
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// CFI-DIAG-CAST: runtime error: control flow integrity check for type 'A' failed during cast to unrelated type
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// CFI-DIAG-CAST-NEXT: note: vtable is of type '{{(struct )?}}B'
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a = (A*)p;
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} else {
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// Invisible to CFI. Test virtual call later.
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memcpy(&a, &p, sizeof(a));
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}
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// CFI: =1=
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// CFI-CAST-NOT: =1=
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// NCFI: =1=
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fprintf(stderr, "=1=\n");
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// CFI-DIAG-CALL: runtime error: control flow integrity check for type 'A' failed during virtual call
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// CFI-DIAG-CALL-NEXT: note: vtable is of type '{{(struct )?}}B'
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a->f(); // UB here
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// CFI-NOT: =2=
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// CFI-CAST-NOT: =2=
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// NCFI: =2=
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fprintf(stderr, "=2=\n");
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}
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#endif
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