https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84740
David Malcolm <dmalcolm at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2018-03-06 CC| |dmalcolm at gcc dot gnu.org Ever confirmed|0 |1 --- Comment #1 from David Malcolm <dmalcolm at gcc dot gnu.org> --- Confirmed; assertion failure here: #1 0x0000000000e405ce in build_constructors (info=0x7fffffffdb80, swtch=<optimized out>) at ../../src/gcc/tree-switch-conversion.c:965 965 gcc_assert (!info->contiguous_range); (gdb) p info->contiguous_range $1 = true (gdb) call debug (info->range_min) 0 (gdb) call debug (info->range_max) 2 Started between r247528 (not affected) and r247538 (affected); probably r247538.