https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100439
--- Comment #12 from Florin Iucha <florin.iucha at amd dot com> ---
Actually, it gets even better - no clang needed. Just build GCC 11-20210626
Snapshot and build the example using the Google test recipe:
#
# Makefile
#
ALL: bin/test_hello
.PHONY: clean
CXX=/opt/gcc11-for-tng/bin/g++-11
CXXFLAGS=-m64 -g -std=c++20 -fsanitize=undefined -fno-omit-frame-pointer
LDFLAGS=-L/opt/gcc11-for-tng/lib64 -Wl,-rpath,/opt/gcc11-for-tng/lib64
-fsanitize=undefined
GOOGLE_TEST_PATH=googletest/googletest
GOOGLE_TEST_OBJECTS=obj/gtest.o obj/gtest_main.o obj/gtest-port.o
obj/gtest-filepath.o obj/gtest-death-test.o obj/gtest-test-part.o
obj/gtest-printers.o
obj/test_hello.o: test_hello.cpp
$(CXX) $(CXXFLAGS) -o $@ -I$(GOOGLE_TEST_PATH)/include -c $<
obj/gtest.o: $(GOOGLE_TEST_PATH)/src/gtest.cc
$(CXX) $(CXXFLAGS) -o $@ -I$(GOOGLE_TEST_PATH)/include
-I$(GOOGLE_TEST_PATH) -c $<
obj/gtest%.o: $(GOOGLE_TEST_PATH)/src/gtest%.cc
$(CXX) $(CXXFLAGS) -o $@ -I$(GOOGLE_TEST_PATH)/include
-I$(GOOGLE_TEST_PATH) -c $<
bin/test_hello: obj/test_hello.o $(GOOGLE_TEST_OBJECTS)
$(CXX) -o $@ $(LDFLAGS) $^ -lpthread
clean:
$(RM) bin/test_hello obj/*.o
#
# test_hello.cpp
#
#include <gtest/gtest.h>
#include <string>
TEST(Hello, World)
{
ASSERT_EQ(43, std::stoi("42"));
}
------
After build:
$ ldd bin/test_hello
linux-vdso.so.1 (0x00007ffc551ee000)
libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0
(0x00007f387908d000)
libstdc++.so.6 => /opt/gcc11-for-tng/lib64/libstdc++.so.6
(0x00007f3878ce4000)
libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f3878b95000)
libubsan.so.1 => /opt/gcc11-for-tng/lib64/libubsan.so.1
(0x00007f387803c000)
libgcc_s.so.1 => /opt/gcc11-for-tng/lib64/libgcc_s.so.1
(0x00007f3877e29000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f3877c37000)
/lib64/ld-linux-x86-64.so.2 (0x00007f387933a000)
libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f3877c2f000)
librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f3877c24000)
$ gdb bin/test_hello
...
...
Program received signal SIGSEGV, Segmentation fault.
0x00007ffff6f4f555 in HandleDynamicTypeCacheMiss (Data=0x5555557a49a0,
Pointer=140737353637960, Hash=3327454538508686025, Opts=...)
at ../../../../gcc/libsanitizer/ubsan/ubsan_handlers_cxx.cpp:36
36 ../../../../gcc/libsanitizer/ubsan/ubsan_handlers_cxx.cpp: No such file
or directory.
...
(gdb) bt
#44921 0x00007ffff6f50516 in __ubsan::checkDynamicType
(Object=Object@entry=0x7ffff7f87588 <typeinfo for std::ctype<char>>,
Type=0x7ffff7f860b8 <typeinfo for std::type_info>, Hash=8146310091054124745) at
../../../../gcc/libsanitizer/ubsan/ubsan_type_hash_itanium.cpp:233
#44922 0x00007ffff6f4f55a in HandleDynamicTypeCacheMiss (Data=0x5555557a49a0,
Pointer=140737353643400, Hash=<optimized out>, Opts=...) at
../../../../gcc/libsanitizer/ubsan/ubsan_handlers_cxx.cpp:36
#44923 0x00007ffff6f4fa92 in __ubsan::__ubsan_handle_dynamic_type_cache_miss
(Data=<optimized out>, Pointer=<optimized out>, Hash=<optimized out>) at
../../../../gcc/libsanitizer/ubsan/ubsan_handlers_cxx.cpp:87
#44924 0x000055555567addd in std::type_info::operator== (this=0x7ffff7f87588
<typeinfo for std::ctype<char>>, __arg=...) at
/opt/gcc11-for-tng/include/c++/11.1.1/typeinfo:122
#44925 0x00007ffff7c9beec in __cxxabiv1::__vmi_class_type_info::__do_dyncast
(this=0x7ffff7f87588 <typeinfo for std::ctype<char>>, src2dst=0,
access_path=__cxxabiv1::__class_type_info::__contained_public,
dst_type=0x7ffff7f87588 <typeinfo for std::ctype<char>>, obj_ptr=0x7ffff7f93e00
<(anonymous namespace)::ctype_c>, src_type=0x7ffff7f86298 <typeinfo for
std::locale::facet>, src_ptr=0x7ffff7f93e00 <(anonymous namespace)::ctype_c>,
result=...) at ../../../../gcc/libstdc++-v3/libsupc++/vmi_class_type_info.cc:91
#44926 0x00007ffff7c999e9 in __cxxabiv1::__dynamic_cast (src_ptr=0x7ffff7f93e00
<(anonymous namespace)::ctype_c>, src_type=0x7ffff7f86298 <typeinfo for
std::locale::facet>, dst_type=0x7ffff7f87588 <typeinfo for std::ctype<char>>,
src2dst=0) at ../../../../gcc/libstdc++-v3/libsupc++/dyncast.cc:74
#44927 0x00007ffff7cdfd6d in std::has_facet<std::ctype<char> > (__loc=...) at
/home/fiucha/tools/gcc.objdir/x86_64-linux-gnu/libstdc++-v3/include/bits/locale_classes.tcc:110
#44928 0x00007ffff7cd6fcf in std::basic_ios<char, std::char_traits<char>
>::_M_cache_locale (this=this@entry=0x5555557cc988 <std::cout@@GLIBCXX_3.4+8>,
__loc=...) at
/home/fiucha/tools/gcc.objdir/x86_64-linux-gnu/libstdc++-v3/include/bits/basic_ios.tcc:159
#44929 0x00007ffff7cd7263 in std::basic_ios<char, std::char_traits<char>
>::init (this=this@entry=0x5555557cc988 <std::cout@@GLIBCXX_3.4+8>,
__sb=__sb@entry=0x7ffff7f92460 <__gnu_internal::buf_cout_sync>) at
/home/fiucha/tools/gcc.objdir/x86_64-linux-gnu/libstdc++-v3/include/bits/basic_ios.tcc:132
#44930 0x00007ffff7ce72db in std::basic_ostream<char, std::char_traits<char>
>::basic_ostream (__sb=<optimized out>, __vtt_parm=0x0, __in_chrg=1,
this=0x5555557cc980 <std::cout@@GLIBCXX_3.4>) at
/home/fiucha/tools/gcc.objdir/x86_64-linux-gnu/libstdc++-v3/include/ostream:85
#44931 std::basic_ostream<char, std::char_traits<char> >::basic_ostream
(this=0x5555557cc980 <std::cout@@GLIBCXX_3.4>, __sb=0x7ffff7f92460
<__gnu_internal::buf_cout_sync>) at
/home/fiucha/tools/gcc.objdir/x86_64-linux-gnu/libstdc++-v3/include/ostream:85
#44932 0x00007ffff7ca39c3 in std::ios_base::Init::Init (this=<optimized out>)
at /home/fiucha/tools/gcc/libstdc++-v3/libsupc++/new:175
#44933 std::ios_base::Init::Init (this=<optimized out>) at
../../../../../gcc/libstdc++-v3/src/c++98/ios_init.cc:78
#44934 0x000055555561be74 in __static_initialization_and_destruction_0
(__initialize_p=1, __priority=65535) at
/opt/gcc11-for-tng/include/c++/11.1.1/iostream:74
#44935 0x000055555561c121 in _GLOBAL__sub_I__ZN16Hello_World_Test10test_info_E
() at test_hello.cpp:8
#44936 0x0000555555708b6d in __libc_csu_init ()
#44937 0x00007ffff6b66040 in __libc_start_main (main=0x5555556e26a3 <main(int,
char**)>, argc=1, argv=0x7fffffffe858, init=0x555555708b20 <__libc_csu_init>,
fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffe848) at
../csu/libc-start.c:264
#44938 0x000055555561bb3e in _start ()
Note the depth of the stack trace.
