tag1.4 & master SIGABRT on Linux with GCC 9.2/7.3

Running code like this under linux with gcc 9.2 (same for gcc 7.3)

#define BACKWARD_HAS_BFD 1
#include "backward.hpp"

using namespace backward;
int main() {
    StackTrace st;
    st.load_here(32);
    Printer p;
    p.print(st);
    return 0;
}

causes the program to crash:

Starting program: /home/sargarass/test/stacktrace/backward-cpp-1.4/backward 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Stack trace (most recent call last):
#3    Object "[0xffffffffffffffff]", at 0xffffffffffffffff, in 
#2    Object "/home/sargarass/test/stacktrace/backward-cpp-1.4/backward", at 0x555555557cf9, in 
#1    Object "/lib64/libc.so.6", at 0x7ffff786feaa, in __libc_start_main
#0    Object "/home/sargarass/test/stacktrace/backward-cpp-1.4/backward", at 0x5555555577bc, in 
double free or corruption (out)

Program received signal SIGABRT, Aborted.
0x00007ffff7884f81 in raise () from /lib64/libc.so.6
(gdb) bt
#0  0x00007ffff7884f81 in raise () from /lib64/libc.so.6
#1  0x00007ffff786e545 in abort () from /lib64/libc.so.6
#2  0x00007ffff78caf18 in __libc_message () from /lib64/libc.so.6
#3  0x00007ffff78d2bd8 in malloc_printerr () from /lib64/libc.so.6
#4  0x00007ffff78d4b90 in _int_free () from /lib64/libc.so.6
#5  0x000055555555c616 in __gnu_cxx::new_allocator<std::__detail::_Hash_node_base*>::deallocate () at /usr/lib/gcc/x86_64-pc-linux-gnu/9.2.0/include/g++-v9/ext/new_allocator.h:128
#6  std::allocator_traits<std::allocator<std::__detail::_Hash_node_base*> >::deallocate () at /usr/lib/gcc/x86_64-pc-linux-gnu/9.2.0/include/g++-v9/bits/alloc_traits.h:470
#7  std::__detail::_Hashtable_alloc<std::allocator<std::__detail::_Hash_node<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, backward::TraceResolverLinuxImpl<backward::trace_resolver_tag::libbfd>::bfd_fileobject>, true> > >::_M_deallocate_buckets ()
    at /usr/lib/gcc/x86_64-pc-linux-gnu/9.2.0/include/g++-v9/bits/hashtable_policy.h:2148
#8  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, backward::TraceResolverLinuxImpl<backward::trace_resolver_tag::libbfd>::bfd_fileobject>, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, backward::TraceResolverLinuxImpl<backward::trace_resolver_tag::libbfd>::bfd_fileobject> >, 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_deallocate_buckets ()
    at /usr/lib/gcc/x86_64-pc-linux-gnu/9.2.0/include/g++-v9/bits/hashtable.h:370
#9  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, backward::TraceResolverLinuxImpl<backward::trace_resolver_tag::libbfd>::bfd_fileobject>, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, backward::TraceResolverLinuxImpl<backward::trace_resolver_tag::libbfd>::bfd_fileobject> >, 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_deallocate_buckets ()
    at /usr/lib/gcc/x86_64-pc-linux-gnu/9.2.0/include/g++-v9/bits/hashtable.h:375
#10 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, backward::TraceResolverLinuxImpl<backward::trace_resolver_tag::libbfd>::bfd_fileobject>, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, backward::TraceResolverLinuxImpl<backward::trace_resolver_tag::libbfd>::bfd_fileobject> >, 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> >::~_Hashtable ()

I did try the tag 1.4 and the master both of them have same issue. Noticed that if I switch from std::unordered_map to std::map in backward.hpp header everything works just fine. Guess u are relying on std::map's property: "The insert and emplace members shall not affect the validity of iterators and references" bla bla...

bombela / backward-cpp

tag1.4 & master SIGABRT on Linux with GCC 9.2/7.3 #163