https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87072
Martin Sebor <msebor at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Known to work| |4.7.4, 8.1.0, 9.0 Keywords| |diagnostic Last reconfirmed| |2018-08-23 CC| |msebor at gcc dot gnu.org Ever confirmed|0 |1 Summary|g++6.2.0 false warning: |[6/7 Regression] g++6.2.0 |array subscript is above |false warning: array |array bounds, with |subscript is above array |misleading line number |bounds, with misleading | |line number Known to fail| |6.4.0, 7.3.0 --- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> --- Confirmed with GCC 5, 6 and 7. The warning wasn't issued by GCC 4.7, started with 4.8, and went away in 8.0 with r255267. I suspect the change is not going to be backported. 2017-11-30 Richard Biener <rguent...@suse.de> PR tree-optimization/83202 * tree-ssa-loop-ivcanon.c (try_unroll_loop_completely): Add allow_peel argument and guard peeling. (canonicalize_loop_induction_variables): Likewise. (canonicalize_induction_variables): Pass false. (tree_unroll_loops_completely_1): Pass unroll_outer to disallow peeling from cunrolli.