https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84677
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Known to work| |5.4.0
Keywords| |ice-on-valid-code
Last reconfirmed| |2018-03-08
CC| |msebor at gcc dot gnu.org
Ever confirmed|0 |1
Summary|internal compiler error: in |[6/7/8 Regression] internal
|extract_constrain_insn, at |compiler error: in
|recog.c:2205 |extract_constrain_insn, at
| |recog.c:2205
Known to fail| |6.4.0, 7.3.0, 8.0
--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed. My bisection also points to r229470 (gcc 6.0.0):
r229470 | law | 2015-10-27 21:05:53 -0400 (Tue, 27 Oct 2015) | 184 lines
[PATCH 7/9] ENABLE_CHECKING refactoring: middle-end, LTO FE
gcc/lto/ChangeLog:
2015-10-27 Mikhail Maltsev <malts...@gmail.com>
* lto.c (unify_scc): Use flag_checking and remove ENABLE_CHECKING
conditionals.
(lto_fixup_state): Likewise.
(do_whole_program_analysis): Use
symtab_node::checking_verify_symtab_nodes and remove ENABLE_CHECKING
conditionals.
...
Before that GCC accepted the code so I'm assuming it's ice-on-valid-code.
