From 69fe4b9eb6f438951e9e31c8b5f159a1b643307e Mon Sep 17 00:00:00 2001
From: Akim Demaille <akim.demaille@gmail.com>
Date: Tue, 31 Dec 2019 11:57:09 +0100
Subject: [PATCH] yacc.c: avoid negations

* data/skeletons/yacc.c (yyerrlab): here.
---
 data/skeletons/yacc.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/data/skeletons/yacc.c b/data/skeletons/yacc.c
index 1f16a733..242cca4a 100644
--- a/data/skeletons/yacc.c
+++ b/data/skeletons/yacc.c
@@ -1769,17 +1769,17 @@ yyerrlab:
             if (yymsg != yymsgbuf)
               YYSTACK_FREE (yymsg);
             yymsg = YY_CAST (char *, YYSTACK_ALLOC (YY_CAST (YYSIZE_T, yymsg_alloc)));
-            if (!yymsg)
+            if (yymsg)
+              {
+                yysyntax_error_status = YYSYNTAX_ERROR;
+                yymsgp = yymsg;
+              }
+            else
               {
                 yymsg = yymsgbuf;
                 yymsg_alloc = sizeof yymsgbuf;
                 yysyntax_error_status = 2;
               }
-            else
-              {
-                yysyntax_error_status = YYSYNTAX_ERROR;
-                yymsgp = yymsg;
-              }
           }
         yyerror (]b4_yyerror_args[yymsgp);
         if (yysyntax_error_status == 2)