1 // RUN: %clangxx -frtti -fsanitize=vptr -fno-sanitize-recover=vptr,null -g %s -O3 -o %t
2 // RUN: not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-CORRUPTED-VTABLE --strict-whitespace
4 // UNSUPPORTED: windows-msvc
5 // REQUIRES: stable-runtime, cxxabi
13 virtual int v() { return 0; }
16 // See the proper definition in ubsan_type_hash_itanium.cc
19 std::type_info *TypeInfo;
22 int main(int argc, char **argv) {
23 // Test that we don't crash on corrupted vtable when
24 // offset is too large or too small.
27 VtablePrefix* RealPrefix = reinterpret_cast<VtablePrefix*>(
28 *reinterpret_cast<void**>(Ptr)) - 1;
30 VtablePrefix Prefix[2];
31 Prefix[0].Offset = 1<<21; // Greater than VptrMaxOffset
32 Prefix[0].TypeInfo = RealPrefix->TypeInfo;
34 // Hack Vtable ptr for Obj.
35 *reinterpret_cast<void**>(Ptr) = static_cast<void*>(&Prefix[1]);
37 // CHECK-CORRUPTED-VTABLE: vptr-corrupted-vtable-itanium.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'
38 // CHECK-CORRUPTED-VTABLE-NEXT: [[PTR]]: note: object has a possibly invalid vptr: abs(offset to top) too big
39 S* Ptr2 = reinterpret_cast<S*>(Ptr);