YYFAIL: warn about uses and remove from lalr1.java.

[bison.git] / src / conflicts.c

diff --git a/src/conflicts.c b/src/conflicts.c
index 7a9f3c222662dd7094c4b949b4c1bf1cfec36157..f11d8e3a9cae40e6e686de662ae6870dace7dede 100644 (file)
--- a/src/conflicts.c
+++ b/src/conflicts.c
@@ -1,7 +1,7 @@
 /* Find and resolve or report lookahead conflicts for bison,
 
-   Copyright (C) 1984, 1989, 1992, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
-   2007 Free Software Foundation, Inc.
+   Copyright (C) 1984, 1989, 1992, 2000, 2001, 2002, 2003, 2004, 2005,
+   2006, 2007, 2008-2009 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
@@ -285,16 +285,21 @@ resolve_sr_conflict (state *s, int ruleno, symbol **errors, int *nerrs)
            flush_reduce (lookahead_tokens, i);
          }
        else
-         /* Matching precedence levels.
-            For left association, keep only the reduction.
-            For right association, keep only the shift.
-            For nonassociation, keep neither.  */
+          /* Matching precedence levels.
+             For non-defined associativity, keep both: unexpected
+             associativity conflict.
+             For left associativity, keep only the reduction.
+             For right associativity, keep only the shift.
+             For nonassociativity, keep neither.  */
 
          switch (symbols[i]->assoc)
            {
-           default:
+            case undef_assoc:
              abort ();
 
+            case precedence_assoc:
+              break;
+
            case right_assoc:
              log_resolution (redrule, i, right_resolution);
              flush_reduce (lookahead_tokens, i);