PR c++/87554 - ICE with extern template and reference member.

[thirdparty/gcc.git] / gcc / cfgloop.c

diff --git a/gcc/cfgloop.c b/gcc/cfgloop.c
index e27cd39259c549884a65682561afcc7a2366b384..e115de6aae2d041526e3fffe9eaad97587e249c6 100644 (file)
--- a/gcc/cfgloop.c
+++ b/gcc/cfgloop.c
@@ -1,5 +1,5 @@
 /* Natural loop discovery code for GNU compiler.
-   Copyright (C) 2000-2018 Free Software Foundation, Inc.
+   Copyright (C) 2000-2019 Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -1539,6 +1539,7 @@ verify_loop_structure (void)
   /* Check irreducible loops.  */
   if (loops_state_satisfies_p (LOOPS_HAVE_MARKED_IRREDUCIBLE_REGIONS))
     {
+      auto_edge_flag saved_irr_mask (cfun);
       /* Record old info.  */
       auto_sbitmap irreds (last_basic_block_for_fn (cfun));
       FOR_EACH_BB_FN (bb, cfun)
@@ -1550,7 +1551,7 @@ verify_loop_structure (void)
            bitmap_clear_bit (irreds, bb->index);
          FOR_EACH_EDGE (e, ei, bb->succs)
            if (e->flags & EDGE_IRREDUCIBLE_LOOP)
-             e->flags |= EDGE_ALL_FLAGS + 1;
+             e->flags |= saved_irr_mask;
        }
 
       /* Recount it.  */
@@ -1576,20 +1577,20 @@ verify_loop_structure (void)
          FOR_EACH_EDGE (e, ei, bb->succs)
            {
              if ((e->flags & EDGE_IRREDUCIBLE_LOOP)
-                 && !(e->flags & (EDGE_ALL_FLAGS + 1)))
+                 && !(e->flags & saved_irr_mask))
                {
                  error ("edge from %d to %d should be marked irreducible",
                         e->src->index, e->dest->index);
                  err = 1;
                }
              else if (!(e->flags & EDGE_IRREDUCIBLE_LOOP)
-                      && (e->flags & (EDGE_ALL_FLAGS + 1)))
+                      && (e->flags & saved_irr_mask))
                {
                  error ("edge from %d to %d should not be marked irreducible",
                         e->src->index, e->dest->index);
                  err = 1;
                }
-             e->flags &= ~(EDGE_ALL_FLAGS + 1);
+             e->flags &= ~saved_irr_mask;
            }
        }
     }