> Found that the first revision causing this problem (of course with DJGPP > related patches applied) is 239113. Native bootstrap with same DJGPP > related patches applied on top of revision 239112 succeeds without > problems. > > [andris@ap gcc]$ git bisect good > 4bfa373ed2bfd022628609751ff34b8e51e0c2b9 is the first bad commit > commit 4bfa373ed2bfd022628609751ff34b8e51e0c2b9 > Author: kugan <kugan@138bc75d-0d04-0410-961f-82ee72b054a4> > Date: Thu Aug 4 04:20:01 2016 +0000 > > gcc/ChangeLog: > > 2016-08-04 Kugan Vivekanandarajah <kug...@linaro.org> > > * tree-vrp.c (set_value_range): Use vrp_equiv_obstack with > BITMAP_ALLOC. > (add_equivalence): Likewise. > (get_value_range): Allocate value range with vrp_value_range_pool. > (vrp_initialize): Initialize vrp_equiv_obstack for equiv > allocation. (vrp_finalize): Relase vrp_equiv_obstack and > vrp_value_range_pool.
Ugh, this looks like a memory corruption issue. -- Eric Botcazou
