https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63995
Bug ID: 63995 Summary: Bootstrap error with -mmpx -fcheck-pointer-bounds Product: gcc Version: 5.0 Status: UNCONFIRMED Keywords: wrong-code Severity: normal Priority: P3 Component: bootstrap Assignee: unassigned at gcc dot gnu.org Reporter: rguenth at gcc dot gnu.org CC: enkovich.gnu at gmail dot com Target: x86_64-*-* /tmp/cceHGHa1.s: Assembler messages: /tmp/cceHGHa1.s:12080: Error: symbol `__chkp_bounds_of_mode_inner' is already defined /tmp/cceHGHa1.s:12086: Error: symbol `__chkp_bounds_of_mode_nunits' is already defined make[3]: *** [insn-preds.o] Error 1 and similar fails for compiling alias.o during stage2 Did you ever try bootstrapping instrumtented GCC? I tried BOOT_CFLAGS="-O2 -g -fcheck-pointer-bounds -mmpx"