From: Joel E. Denny <jdenny@ces.clemson.edu>
Date: Fri, 6 Jan 2006 20:09:31 +0000 (+0000)
Subject: * data/c.m4 (b4_yy_symbol_print_generate): In yy_symbol_print, accept
X-Git-Tag: v2.3b~505
X-Git-Url: https://git.saurik.com/bison.git/commitdiff_plain/05449a2c1b09dec9d032cc39b2fc155572d893ce

* data/c.m4 (b4_yy_symbol_print_generate): In yy_symbol_print, accept
!yyvaluep as signal that no semantic value is available to print.
* data/glr.c (yydestroyGLRState): If state is not resolved, don't try
to print a semantic value.
---

diff --git a/ChangeLog b/ChangeLog
index 6617ca08..dfdb3529 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2006-01-06  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* data/c.m4 (b4_yy_symbol_print_generate): In yy_symbol_print, accept   
+	!yyvaluep as signal that no semantic value is available to print.
+	* data/glr.c (yydestroyGLRState): If state is not resolved, don't try
+	to print a semantic value.
+
 2006-01-06  Joel E. Denny  <jdenny@ces.clemson.edu>
 
 	* tests/glr-regression.at: For consistency with my newer test cases,
diff --git a/data/c.m4 b/data/c.m4
index c4942555..630fdebd 100644
--- a/data/c.m4
+++ b/data/c.m4
@@ -464,7 +464,8 @@ m4_define_default([b4_yy_symbol_print_generate],
 b4_location_if([, [[const YYLTYPE * const yylocationp], [yylocationp]]])[]dnl
 m4_ifset([b4_parse_param], [, b4_parse_param]))[
 {
-  YYUSE (yyvaluep);
+  if (!yyvaluep)
+    return;
 ]b4_location_if([  YYUSE (yylocationp);
 ])dnl
 b4_parse_param_use[]dnl
diff --git a/data/glr.c b/data/glr.c
index 975ec578..e488f7c9 100644
--- a/data/glr.c
+++ b/data/glr.c
@@ -973,7 +973,7 @@ yydestroyGLRState (char const *yymsg, yyGLRState *yys]b4_user_formals[)
 	{
 	  YYFPRINTF (stderr, "%s unresolved ", yymsg);
 	  yy_symbol_print (stderr, yystos[yys->yylrState],
-			   &yys->yysemantics.yysval]b4_location_if([, &yys->yyloc])[]b4_user_args[);
+			   NULL]b4_location_if([, &yys->yyloc])[]b4_user_args[);
 	  YYFPRINTF (stderr, "\n");
 	}
 #endif