| // Test that we don't crash for vtable pointers with an invalid ptrauth |
| // signature which includes unauthenticated vtable pointers. |
| |
| // RUN: %clangxx -frtti -fsanitize=vptr -fno-sanitize-recover=vptr -g %s -O3 -o %t |
| // RUN: not %run %t 2>&1 | FileCheck %s |
| |
| // TODO(yln): introduce 'ptrauth' lit feature |
| // REQUIRES: stable-runtime, cxxabi, arch=arm64e |
| |
| #include <typeinfo> |
| #include <ptrauth.h> |
| |
| struct S { |
| S() {} |
| ~S() {} |
| virtual int v() { return 0; } |
| }; |
| |
| int main(int argc, char **argv) { |
| S Obj; |
| void *Ptr = &Obj; |
| void **VtablePtrPtr = reinterpret_cast<void **>(&Obj); |
| // Hack Obj: the unauthenticated Vtable ptr will trigger an auth failure in the runtime. |
| void *UnauthenticatedVtablePtr = ptrauth_strip(*VtablePtrPtr, 0); |
| *VtablePtrPtr = UnauthenticatedVtablePtr; |
| |
| // CHECK: vptr-ptrauth-unauthenticated.cpp:[[@LINE+3]]:16: runtime error: member call on address [[PTR:0x[0-9a-f]*]] which does not point to an object of type 'S' |
| // CHECK: [[PTR]]: note: object has invalid vptr |
| S *Ptr2 = reinterpret_cast<S *>(Ptr); |
| return Ptr2->v(); |
| } |