https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100439
Bug ID: 100439
Summary: stack overflow running ubsan
Product: gcc
Version: 11.1.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: sanitizer
Assignee: unassigned at gcc dot gnu.org
Reporter: florin.iucha at amd dot com
CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
jakub at gcc dot gnu.org, kcc at gcc dot gnu.org, marxin at
gcc dot gnu.org
Target Milestone: ---
Running 204213fdf23d8228084ded03e1ca9f8acd91d39a (GCC 11-20210501)
Building a test app with -fsanitize=undefined, then putting a breakpoint on
__dynamic_cast:
Breakpoint 1, 0x00007ffff7ea12fd in __dynamic_cast () from
/opt/tng-gcc11-glibc-linux5.4/x86_64-tng-linux-gnu/sysroot/lib/libstdc++.so.6
(gdb) bt
#0 0x00007ffff7ea12fd in __dynamic_cast () from
/opt/tng-gcc11-glibc-linux5.4/x86_64-tng-linux-gnu/sysroot/lib/libstdc++.so.6
#1 0x00007ffff7363e36 in ?? () from
/opt/tng-gcc11-glibc-linux5.4/x86_64-tng-linux-gnu/sysroot/lib/libubsan.so.1
#2 0x00007ffff7362e7a in ?? () from
/opt/tng-gcc11-glibc-linux5.4/x86_64-tng-linux-gnu/sysroot/lib/libubsan.so.1
#3 0x00007ffff73633b2 in __ubsan_handle_dynamic_type_cache_miss () from
/opt/tng-gcc11-glibc-linux5.4/x86_64-tng-linux-gnu/sysroot/lib/libubsan.so.1
#4 0x000000000041882c in std::type_info::operator== (this=0x6009b8 <typeinfo
for std::ctype<char>@GLIBCXX_3.4>, __arg=...)
at
/opt/tng-gcc11-glibc-linux5.4/x86_64-tng-linux-gnu/include/c++/11.1.1/typeinfo:122
#5 0x00007ffff7ea3882 in __cxxabiv1::__vmi_class_type_info::__do_dyncast(long,
__cxxabiv1::__class_type_info::__sub_kind, __cxxabiv1::__class_type_info
const*, void const*, __cxxabiv1::__class_type_info const*, void const*,
__cxxabiv1::__class_type_info::__dyncast_result&) const ()
from
/opt/tng-gcc11-glibc-linux5.4/x86_64-tng-linux-gnu/sysroot/lib/libstdc++.so.6
#6 0x00007ffff7ea1379 in __dynamic_cast () from
/opt/tng-gcc11-glibc-linux5.4/x86_64-tng-linux-gnu/sysroot/lib/libstdc++.so.6
#7 0x00007ffff7ee76ff in bool std::has_facet<std::ctype<char> >(std::locale
const&) ()
from
/opt/tng-gcc11-glibc-linux5.4/x86_64-tng-linux-gnu/sysroot/lib/libstdc++.so.6
#8 0x00007ffff7ede977 in std::basic_ios<char, std::char_traits<char>
>::_M_cache_locale(std::locale const&) ()
from
/opt/tng-gcc11-glibc-linux5.4/x86_64-tng-linux-gnu/sysroot/lib/libstdc++.so.6
#9 0x00007ffff7edec01 in std::basic_ios<char, std::char_traits<char>
>::init(std::basic_streambuf<char, std::char_traits<char> >*) ()
from
/opt/tng-gcc11-glibc-linux5.4/x86_64-tng-linux-gnu/sysroot/lib/libstdc++.so.6
#10 0x00007ffff7eeec6d in std::basic_ostream<char, std::char_traits<char>
>::basic_ostream(std::basic_streambuf<char, std::char_traits<char> >*) ()
from
/opt/tng-gcc11-glibc-linux5.4/x86_64-tng-linux-gnu/sysroot/lib/libstdc++.so.6
#11 0x00007ffff7eab35b in std::ios_base::Init::Init() () from
/opt/tng-gcc11-glibc-linux5.4/x86_64-tng-linux-gnu/sysroot/lib/libstdc++.so.6
#12 0x0000000000416e8f in __static_initialization_and_destruction_0
(__initialize_p=1, __priority=65535)
at
/opt/tng-gcc11-glibc-linux5.4/x86_64-tng-linux-gnu/include/c++/11.1.1/iostream:74
Continuing...
#0 0x00007ffff7ea12fd in __dynamic_cast () from
/opt/tng-gcc11-glibc-linux5.4/x86_64-tng-linux-gnu/sysroot/lib/libstdc++.so.6
#1 0x00007ffff7363e36 in ?? () from
/opt/tng-gcc11-glibc-linux5.4/x86_64-tng-linux-gnu/sysroot/lib/libubsan.so.1
#2 0x00007ffff7362e7a in ?? () from
/opt/tng-gcc11-glibc-linux5.4/x86_64-tng-linux-gnu/sysroot/lib/libubsan.so.1
#3 0x00007ffff73633b2 in __ubsan_handle_dynamic_type_cache_miss () from
/opt/tng-gcc11-glibc-linux5.4/x86_64-tng-linux-gnu/sysroot/lib/libubsan.so.1
#4 0x000000000041882c in std::type_info::operator== (this=0x7ffff7f8f068
<typeinfo for __cxxabiv1::__si_class_type_info>, __arg=...)
at
/opt/tng-gcc11-glibc-linux5.4/x86_64-tng-linux-gnu/include/c++/11.1.1/typeinfo:122
#5 0x00007ffff7ea3007 in __cxxabiv1::__si_class_type_info::__do_dyncast(long,
__cxxabiv1::__class_type_info::__sub_kind, __cxxabiv1::__class_type_info
const*, void const*, __cxxabiv1::__class_type_info const*, void const*,
__cxxabiv1::__class_type_info::__dyncast_result&) const ()
from
/opt/tng-gcc11-glibc-linux5.4/x86_64-tng-linux-gnu/sysroot/lib/libstdc++.so.6
#6 0x00007ffff7ea1379 in __dynamic_cast () from
/opt/tng-gcc11-glibc-linux5.4/x86_64-tng-linux-gnu/sysroot/lib/libstdc++.so.6
#7 0x00007ffff7363e36 in ?? () from
/opt/tng-gcc11-glibc-linux5.4/x86_64-tng-linux-gnu/sysroot/lib/libubsan.so.1
#8 0x00007ffff7362e7a in ?? () from
/opt/tng-gcc11-glibc-linux5.4/x86_64-tng-linux-gnu/sysroot/lib/libubsan.so.1
#9 0x00007ffff73633b2 in __ubsan_handle_dynamic_type_cache_miss () from
/opt/tng-gcc11-glibc-linux5.4/x86_64-tng-linux-gnu/sysroot/lib/libubsan.so.1
#10 0x000000000041882c in std::type_info::operator== (this=0x6009b8 <typeinfo
for std::ctype<char>@GLIBCXX_3.4>, __arg=...)
at
/opt/tng-gcc11-glibc-linux5.4/x86_64-tng-linux-gnu/include/c++/11.1.1/typeinfo:122
#11 0x00007ffff7ea3882 in __cxxabiv1::__vmi_class_type_info::__do_dyncast(long,
__cxxabiv1::__class_type_info::__sub_kind, __cxxabiv1::__class_type_info
const*, void const*, __cxxabiv1::__class_type_info const*, void const*,
__cxxabiv1::__class_type_info::__dyncast_result&) const ()
from
/opt/tng-gcc11-glibc-linux5.4/x86_64-tng-linux-gnu/sysroot/lib/libstdc++.so.6
#12 0x00007ffff7ea1379 in __dynamic_cast () from
/opt/tng-gcc11-glibc-linux5.4/x86_64-tng-linux-gnu/sysroot/lib/libstdc++.so.6
#13 0x00007ffff7ee76ff in bool std::has_facet<std::ctype<char> >(std::locale
const&) ()
from
/opt/tng-gcc11-glibc-linux5.4/x86_64-tng-linux-gnu/sysroot/lib/libstdc++.so.6
#14 0x00007ffff7ede977 in std::basic_ios<char, std::char_traits<char>
>::_M_cache_locale(std::locale const&) ()
from
/opt/tng-gcc11-glibc-linux5.4/x86_64-tng-linux-gnu/sysroot/lib/libstdc++.so.6
#15 0x00007ffff7edec01 in std::basic_ios<char, std::char_traits<char>
>::init(std::basic_streambuf<char, std::char_traits<char> >*) ()
from
/opt/tng-gcc11-glibc-linux5.4/x86_64-tng-linux-gnu/sysroot/lib/libstdc++.so.6
#16 0x00007ffff7eeec6d in std::basic_ostream<char, std::char_traits<char>
>::basic_ostream(std::basic_streambuf<char, std::char_traits<char> >*) ()
from
/opt/tng-gcc11-glibc-linux5.4/x86_64-tng-linux-gnu/sysroot/lib/libstdc++.so.6
#17 0x00007ffff7eab35b in std::ios_base::Init::Init() () from
/opt/tng-gcc11-glibc-linux5.4/x86_64-tng-linux-gnu/sysroot/lib/libstdc++.so.6
#18 0x0000000000416e8f in __static_initialization_and_destruction_0
(__initialize_p=1, __priority=65535)
If I let it running, the program runs out of stack.
GCC/Binutils/Glibc are built using Crosstool-NG.
