Crash (SEGV) when used with UndefinedBehaviorSanitizer

[hexagonrecursion]

UndefinedBehaviorSanitizer is a very handy tool that helped me find and troubleshoot many bugs in C++ projects. Unfortunately hippomocks appear to be incompatible with it.

main.cpp

#include "hippomocks.h"
#include <iostream>

class CSystemUtils {
public:
    virtual char* GetDataPath() {
        return "hello.txt";
    }
    virtual ~CSystemUtils() {}
};

int main(int, char**)
{
    MockRepository m_mocks;
    CSystemUtils *m_systemUtils = m_mocks.Mock<CSystemUtils>();
    m_mocks.OnCall(m_systemUtils, CSystemUtils::GetDataPath).Return("mocked.txt");
    std::cout << m_systemUtils->GetDataPath() << std::endl;
    return 0;
}

Compile

1. Either clang++ -std=c++20 -fsanitize=undefined main.cpp
2. of g++ -std=c++20 -fsanitize=undefined main.cpp

Expected

a.out prints mocked.txt when executed

Got

clang:

UndefinedBehaviorSanitizer:DEADLYSIGNAL
==42734==ERROR: UndefinedBehaviorSanitizer: SEGV on unknown address 0x000000002021 (pc 0x7f75b7e9ac97 bp
 0x55d79bb42f80 sp 0x7ffc4c2cc900 T42734)
==42734==The signal is caused by a READ memory access.
    #0 0x7f75b7e9ac97 in __dynamic_cast (/lib/x86_64-linux-gnu/libstdc++.so.6+0xacc97) (BuildId: e37fe1a
879783838de78cbc8c80621fa685d58a2)
    #1 0x55d79bae5f4b in __ubsan::checkDynamicType(void*, void*, unsigned long) (/home/cdda/tmp/a.out+0x
4af4b) (BuildId: 35ce505127e6a2099c0cd91fb29ee70fe2925749)
    #2 0x55d79bae5092 in HandleDynamicTypeCacheMiss(__ubsan::DynamicTypeCacheMissData*, unsigned long, u
nsigned long, __ubsan::ReportOptions) ubsan_handlers_cxx.cpp.o
    #3 0x55d79bae505d in __ubsan_handle_dynamic_type_cache_miss (/home/cdda/tmp/a.out+0x4a05d) (BuildId:
 35ce505127e6a2099c0cd91fb29ee70fe2925749)
    #4 0x55d79bafa9cd in void HippoMocks::MockRepository::BasicRegisterExpect<CSystemUtils>(HippoMocks::
mock<CSystemUtils>*, int, int, void (HippoMocks::base_mock::*)(), int) (/home/cdda/tmp/a.out+0x5f9cd) (B
uildId: 35ce505127e6a2099c0cd91fb29ee70fe2925749)
    #5 0x55d79bae6a3d in HippoMocks::TCall<char*, HippoMocks::NullType, HippoMocks::NullType, HippoMocks
::NullType, HippoMocks::NullType, HippoMocks::NullType, HippoMocks::NullType, HippoMocks::NullType, Hipp
oMocks::NullType, HippoMocks::NullType, HippoMocks::NullType, HippoMocks::NullType, HippoMocks::NullType
, HippoMocks::NullType, HippoMocks::NullType, HippoMocks::NullType, HippoMocks::NullType>& HippoMocks::M
ockRepository::RegisterExpect_<16, CSystemUtils, char*, CSystemUtils>(CSystemUtils*, char* (CSystemUtils
::*)(), HippoMocks::RegistrationType, char const*, char const*, unsigned long) (/home/cdda/tmp/a.out+0x4
ba3d) (BuildId: 35ce505127e6a2099c0cd91fb29ee70fe2925749)
    #6 0x55d79bae62e1 in main (/home/cdda/tmp/a.out+0x4b2e1) (BuildId: 35ce505127e6a2099c0cd91fb29ee70fe
2925749)
    #7 0x7f75b7ae8d8f in __libc_start_call_main csu/../sysdeps/nptl/libc_start_call_main.h:58:16
    #8 0x7f75b7ae8e3f in __libc_start_main csu/../csu/libc-start.c:392:3
    #9 0x55d79babc664 in _start (/home/cdda/tmp/a.out+0x21664) (BuildId: 35ce505127e6a2099c0cd91fb29ee70
fe2925749)

UndefinedBehaviorSanitizer can not provide additional info.
SUMMARY: UndefinedBehaviorSanitizer: SEGV (/lib/x86_64-linux-gnu/libstdc++.so.6+0xacc97) (BuildId: e37fe
1a879783838de78cbc8c80621fa685d58a2) in __dynamic_cast
==42734==ABORTING

gcc:

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff7e31c97 in __dynamic_cast () from /lib/x86_64-linux-gnu/libstdc++.so.6
(gdb) bt
#0  0x00007ffff7e31c97 in __dynamic_cast () from /lib/x86_64-linux-gnu/libstdc++.so.6
#1  0x00007ffff76795ab in __ubsan::checkDynamicType (Object=Object@entry=0x5555555d0eb0, 
    Type=0x5555555a6aa0 <typeinfo for CSystemUtils>, Hash=4824472795596714896)
    at ../../../../src/libsanitizer/ubsan/ubsan_type_hash_itanium.cpp:232
#2  0x00007ffff76780d6 in HandleDynamicTypeCacheMiss (Data=0x5555555afec0, Pointer=93824992743088, Hash=<optimized out>, Opts=...)
    at ../../../../src/libsanitizer/ubsan/ubsan_handlers_cxx.cpp:36
#3  0x00007ffff767878f in __ubsan::__ubsan_handle_dynamic_type_cache_miss (Data=<optimized out>, Pointer=<optimized out>, 
    Hash=<optimized out>) at ../../../../src/libsanitizer/ubsan/ubsan_handlers_cxx.cpp:87
#4  0x0000555555575964 in main ()
(gdb) 

Versions Tested

master branch (10960d0)
v5.0 (dca4725)