https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107078
--- Comment #22 from Sam James <sam at gentoo dot org> --- (In reply to Tomasz Kłoczko from comment #21) > On emore time. > You are commenting under GNU C Compilet issue during linking firebird > binaries linking. > *COMPILER* (not firebird) is core dumping. > > Please discuss firebird issue opening ticket on > https://github.com/FirebirdSQL/firebird/issues/ It is definitely isql which is segfaulting. The Makefile uses a binary just built to try do some bits and the binary-just-built crashes.