Modifications to fix GLR bug reported by S. Eken.

ChangeLog

@@ -1,3 +1,36 @@
+2003-01-29  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>
+
+	* tests/cxx-type.at: Correct apparent typo in Bison input: $$ instead
+	of $1.
+	
+	Changes in response to error report by S. Eken: GLR mode does not 
+	handle negative $ indices or $ indices in embedded rules correctly.
+	See <http://mail.gnu.org/archive/html/bug-bison/2003-01/msg00076.html>.
+	
+	* data/glr.c (b4_rhs_value): Change to use YYFILL macro.
+	(b4_rhs_location): Ditto.
+	(yyfill): New function to copy from stack tree into array 
+	incrementally.
+	(yyuserAction): Modify to allow incremental move of semantic values 
+	to rhs array when in GLR mode.  
+	Define YYFILL to use in user-defined actions to fill semantic array 
+	as needed.
+	Remove dummy use of yystack, as there is now a guaranteed use.
+	(yydoAction): Modify to allow incremental move of semantic values
+	to rhs array when in GLR mode.
+	(yyresolveAction): Ditto.
+	(yyglrShiftDefer): Update comment.
+	(yyresolveStates): Use X == NULL for pointers, not !X. 
+	(yyglrReduce): Ditto.
+	(yydoAction): Ditto
+	
+	* tests/glr-regr1.at: Rename to ...
+	* tests/glr-regression.at: Add new regression test for the problems
+	described above (adapted from S. Eken).
+	Update copyright notice.
+	* tests/testsuite.at: Rename glr-regr1.at to glr-regression.at.
+	* tests/Makefile.am: Ditto.
+
 2003-01-28  Paul Eggert  <eggert@twinsun.com>
 
 	* data/lalr1.cc: Do not use @output_header_name@ unless