[Bug rtl-optimization/52139] [4.5 Regression] ICE: in remove_insn, at emit-rtl.c:3960 with -O -fPIC -fno-tree-dominator-opts -fno-tree-fre

[steven at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52139



Steven Bosscher <steven at gcc dot gnu.org> changed:



           What    |Removed                     |Added

----------------------------------------------------------------------------

             Status|RESOLVED                    |REOPENED

         Resolution|FIXED                       |



--- Comment #10 from Steven Bosscher <steven at gcc dot gnu.org> 2013-04-11 
19:23:01 UTC ---

The fix is wrong, if there is a jump table at the end of basic block a,

and a ends in a tablejump, then the blocks cannot be merged.  In the case

of this PR, the jump table must be dead and someone left it lingering.

The bug is the presence of a dead jump table, and the patch only papers

over the issue.