https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97369
Jonathan Wakely <redi at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |WAITING Last reconfirmed| |2020-10-11 Ever confirmed|0 |1 --- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> --- You haven't provided sufficient information to tell, but I doubt there's a bug here. Please read these links and confirm if you're using the right libstdc++.so at run time (the one from your self-compile GCC 6.3.0, not the system compiler): https://gcc.gnu.org/onlinedocs/libstdc++/faq.html#faq.how_to_set_paths https://gcc.gnu.org/onlinedocs/libstdc++/manual/using_dynamic_or_shared.html#manual.intro.using.linkage.dynamic I've said it before, but the fact that matlab 2020 only works with a GCC version that has been unsupported for two years is stupid.