https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98220
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |redi at gcc dot gnu.org
--- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> ---
Apparently, it also crashes with -O0.
The backtrace is:
==20542== Process terminating with default action of signal 8 (SIGFPE): dumping
core
==20542== Integer divide by zero at address 0x1002CB899F
==20542== at 0x401391:
std::__detail::_Mod_range_hashing::operator()(unsigned long, unsigned long)
const (hashtable_policy.h:431)
==20542== by 0x40177A:
std::__detail::_Hash_code_base<std::__cxx11::basic_string<char,
std::char_traits<char>, std::allocator<char> >,
std::pair<std::__cxx11::basic_string<char, std::char_traits<char>,
std::allocator<char> > const, Module* (*)(char const*)>,
std::__detail::_Select1st, std::hash<std::__cxx11::basic_string<char,
std::char_traits<char>, std::allocator<char> > >,
std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash,
true>::_M_bucket_index(unsigned long, unsigned long) const
(hashtable_policy.h:1224)
==20542== by 0x40169E: std::_Hashtable<std::__cxx11::basic_string<char,
std::char_traits<char>, std::allocator<char> >,
std::pair<std::__cxx11::basic_string<char, std::char_traits<char>,
std::allocator<char> > const, Module* (*)(char const*)>,
std::allocator<std::pair<std::__cxx11::basic_string<char,
std::char_traits<char>, std::allocator<char> > const, Module* (*)(char const*)>
>, std::__detail::_Select1st, std::equal_to<std::__cxx11::basic_string<char,
std::char_traits<char>, std::allocator<char> > >,
std::hash<std::__cxx11::basic_string<char, std::char_traits<char>,
std::allocator<char> > >, std::__detail::_Mod_range_hashing,
std::__detail::_Default_ranged_hash, std::__detail::_Prime_rehash_policy,
std::__detail::_Hashtable_traits<true, false, true> >::_M_bucket_index(unsigned
long) const (hashtable.h:735)
==20542== by 0x4015C8: std::_Hashtable<std::__cxx11::basic_string<char,
std::char_traits<char>, std::allocator<char> >,
std::pair<std::__cxx11::basic_string<char, std::char_traits<char>,
std::allocator<char> > const, Module* (*)(char const*)>,
std::allocator<std::pair<std::__cxx11::basic_string<char,
std::char_traits<char>, std::allocator<char> > const, Module* (*)(char const*)>
>, std::__detail::_Select1st, std::equal_to<std::__cxx11::basic_string<char,
std::char_traits<char>, std::allocator<char> > >,
std::hash<std::__cxx11::basic_string<char, std::char_traits<char>,
std::allocator<char> > >, std::__detail::_Mod_range_hashing,
std::__detail::_Default_ranged_hash, std::__detail::_Prime_rehash_policy,
std::__detail::_Hashtable_traits<true, false, true>
>::find(std::__cxx11::basic_string<char, std::char_traits<char>,
std::allocator<char> > const&) (hashtable.h:1516)
==20542== by 0x40152C: std::unordered_map<std::__cxx11::basic_string<char,
std::char_traits<char>, std::allocator<char> >, Module* (*)(char const*),
std::hash<std::__cxx11::basic_string<char, std::char_traits<char>,
std::allocator<char> > >, std::equal_to<std::__cxx11::basic_string<char,
std::char_traits<char>, std::allocator<char> > >,
std::allocator<std::pair<std::__cxx11::basic_string<char,
std::char_traits<char>, std::allocator<char> > const, Module* (*)(char const*)>
> >::find(std::__cxx11::basic_string<char, std::char_traits<char>,
std::allocator<char> > const&) (unordered_map.h:869)
==20542== by 0x4022CC:
ModuleFactory::Register(std::__cxx11::basic_string<char,
std::char_traits<char>, std::allocator<char> > const&, Module* (*)(char
const*)) (module.h:27)
==20542== by 0x402342:
RegisterModule::RegisterModule(std::__cxx11::basic_string<char,
std::char_traits<char>, std::allocator<char> > const&, Module* (*)(char
const*)) (module.h:45)
==20542== by 0x403348: __static_initialization_and_destruction_0(int, int)
[clone .lto_priv.2] (moduleB.cpp:8)
==20542== by 0x4033A6: _GLOBAL__sub_I__ZN7ModuleB6CreateEPKc
(moduleB.cpp:14)
==20542== by 0x4033B1: _sub_I_65535_0.0 (moduleB.cpp:14)
==20542== by 0x40340C: __libc_csu_init (elf-init.c:89)
==20542== by 0x4BF80DD: (below main) (in /lib64/libc-2.32.so)
I bet it's related to the construction of the s_creator and its usage at
moduleB.cpp:8
It's likely Static Initialization Order Fiasco:
https://en.cppreference.com/w/cpp/language/siof
@Jonathan: Can you please judge?
