[gcc r13-2639] tree-optimization/106913 - ICE with -da and -Wuninitialized

[Richard Biener]

https://gcc.gnu.org/g:ad08894ea02b6308c4ed4e8cd8e6a564c2f581e8

commit r13-2639-gad08894ea02b6308c4ed4e8cd8e6a564c2f581e8
Author: Richard Biener <rguenther@suse.de>
Date:   Tue Sep 13 08:46:51 2022 +0200

    tree-optimization/106913 - ICE with -da and -Wuninitialized
    
    The following avoids setting and not clearing an auto_bb_flag
    on EXIT_BLOCK which we don't verify for such stale flags but
    dump_bb_info still asserts on them.
    
            PR tree-optimization/106913
            * tree-ssa-uninit.cc (warn_uninitialized_vars): Do not set
            ft_reachable on EXIT_BLOCK.

Diff:
---
 gcc/tree-ssa-uninit.cc | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/gcc/tree-ssa-uninit.cc b/gcc/tree-ssa-uninit.cc
index 4a1c333d9cb..eae29f88f9d 100644
--- a/gcc/tree-ssa-uninit.cc
+++ b/gcc/tree-ssa-uninit.cc
@@ -1013,11 +1013,9 @@ warn_uninitialized_vars (bool wmaybe_uninit)
       if (ee)
 	bb = ee->dest;
       else
-	{
-	  bb = get_immediate_dominator (CDI_POST_DOMINATORS, bb);
-	  if (!bb || bb->index == EXIT_BLOCK)
-	    break;
-	}
+	bb = get_immediate_dominator (CDI_POST_DOMINATORS, bb);
+      if (!bb || bb->index == EXIT_BLOCK)
+	break;
     }
 
   FOR_EACH_BB_FN (bb, cfun)