https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88818
--- Comment #5 from David Binderman <dcb314 at hotmail dot com> --- The attached code does something similar: $ ~/gcc/results/bin/gcc -c -O2 -flto -fvtable-verify=std -std=gnu++11 bug504.cc during GIMPLE pass: ealias bug504.cc: In function ‘_GLOBAL__sub_I.00099__ZSt27__replacement_assert___file’: bug504.cc:5632:56: internal compiler error: in operator[], at vec.h:845 5632 | };