From: Paul Eggert <eggert@cs.ucla.edu>
Date: Thu, 22 Jul 2004 14:39:03 +0000 (+0000)
Subject: (b4_symbol_actions): Don't assume %union was used.
X-Git-Tag: BISON-2_0~133
X-Git-Url: https://git.saurik.com/bison.git/commitdiff_plain/60c8294801d179c1b038f1be3e45c8d5935c5240?ds=sidebyside

(b4_symbol_actions): Don't assume %union was used.
---

diff --git a/data/c.m4 b/data/c.m4
index a72f059a..c651f62c 100644
--- a/data/c.m4
+++ b/data/c.m4
@@ -327,7 +327,8 @@ m4_define([b4_syncline],
 #                   SYMBOL-ACTION, SYMBOL-TYPENAME)
 # -------------------------------------------------
 m4_define([b4_symbol_actions],
-[m4_pushdef([b4_dollar_dollar], [yyvaluep->$6])dnl
+[m4_pushdef([b4_dollar_dollar],
+   [m4_ifval([$6], [(yyvaluep->$6)], [(*yyvaluep)])])dnl
 m4_pushdef([b4_at_dollar], [(*yylocationp)])dnl
       case $4: /* $3 */
 b4_syncline([$2], [$1])