https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80423
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |GC, wrong-code Status|NEW |UNCONFIRMED Last reconfirmed|2017-04-14 00:00:00 | Ever confirmed|1 |0 --- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- --param ggc-min-expand=0 --param ggc-min-heapsize=0 You might be able to reproduce it with: --param ggc-min-expand=1 --param ggc-min-heapsize=1 Which makes it faster normally.