Fixed segfault in forward definition parsing.

src/interfaces/ecpg/ChangeLog

@@ -1469,6 +1469,10 @@ Fri May 30 15:19:39 CEST 2003
 
 	- Implemented prototype describe function.
 	- Some minor cleanup/bug fixing.
+	
+Mon Jun  2 17:36:03 CEST 2003
+
+	- Fixed segfault in forward definition parsing.
 	- Set ecpg version to 2.12.0.
 	- Set ecpg library to 3.4.2.
 	- Set pgtypes library to 1.0.0

src/interfaces/ecpg/preproc/preproc.y

-/* $Header: /cvsroot/pgsql/src/interfaces/ecpg/preproc/Attic/preproc.y,v 1.227 2003/05/30 13:22:02 meskes Exp $ */
+/* $Header: /cvsroot/pgsql/src/interfaces/ecpg/preproc/Attic/preproc.y,v 1.228 2003/06/02 15:38:02 meskes Exp $ */
 
 /* Copyright comment */
 %{
@@ -4437,7 +4437,7 @@ single_vt_type: common_type
 			/* this is for named structs/unions */
 			char *name;
 			struct typedefs *this;
-			bool forward = (strcmp($1.symbol, forward_name) == 0 && strcmp($1.su, "struct") == 0);
+			bool forward = (forward_name != NULL && strcmp($1.symbol, forward_name) == 0 && strcmp($1.su, "struct") == 0);
 
 			name = cat2_str($1.su, $1.symbol);
 			/* Do we have a forward definition? */
@@ -4791,7 +4791,7 @@ var_type:	common_type
 			/* this is for named structs/unions */
 			char *name;
 			struct typedefs *this;
-			bool forward = (strcmp($1.symbol, forward_name) == 0 && strcmp($1.su, "struct") == 0);
+			bool forward = (forward_name != NULL && strcmp($1.symbol, forward_name) == 0 && strcmp($1.su, "struct") == 0);
 
 			name = cat2_str($1.su, $1.symbol);
 			/* Do we have a forward definition? */