From 1ca0b6d047a96a69800a0e00f3e61f148beed1db Mon Sep 17 00:00:00 2001
From: Michael Meskes <meskes@postgresql.org>
Date: Wed, 11 Jun 2003 06:39:13 +0000
Subject: [PATCH] Make sure a variable is no longer referenced when it is
 removed. Fixed counting bug in parsing "->" operator. Removed that silly
 debugging function I accidently committed last night.

---
 src/interfaces/ecpg/ChangeLog          |  5 +++++
 src/interfaces/ecpg/preproc/preproc.y  | 12 +-----------
 src/interfaces/ecpg/preproc/variable.c | 33 ++++++++++++++++++++++++++++++++-
 3 files changed, 38 insertions(+), 12 deletions(-)

diff --git a/src/interfaces/ecpg/ChangeLog b/src/interfaces/ecpg/ChangeLog
index 6e3b5cb54e..858c7f9111 100644
--- a/src/interfaces/ecpg/ChangeLog
+++ b/src/interfaces/ecpg/ChangeLog
@@ -1477,6 +1477,11 @@ Mon Jun  2 17:36:03 CEST 2003
 Tue Jun 10 19:43:49 CEST 2003
 
 	- Fixed several small bugs.
+	
+Wed Jun 11 08:30:41 CEST 2003
+
+	- Make sure a variable is no longer referenced when it is removed.
+	- Fixed counting bug in parsing "->" operator.
 	- Set ecpg version to 2.12.0.
 	- Set ecpg library to 3.4.2.
 	- Set pgtypes library to 1.0.0
diff --git a/src/interfaces/ecpg/preproc/preproc.y b/src/interfaces/ecpg/preproc/preproc.y
index b1e002c05a..83015d04a5 100644
--- a/src/interfaces/ecpg/preproc/preproc.y
+++ b/src/interfaces/ecpg/preproc/preproc.y
@@ -1,4 +1,4 @@
-/* $Header: /cvsroot/pgsql/src/interfaces/ecpg/preproc/Attic/preproc.y,v 1.229 2003/06/10 17:46:43 meskes Exp $ */
+/* $Header: /cvsroot/pgsql/src/interfaces/ecpg/preproc/Attic/preproc.y,v 1.230 2003/06/11 06:39:12 meskes Exp $ */
 
 /* Copyright comment */
 %{
@@ -48,14 +48,6 @@ static struct inf_compat_val
 	struct inf_compat_val *next;
 } *informix_val;
 
-void mm(void)
-{
-	int i,j;
-
-	i=1;
-	j=i+1;
-}
-
 /*
  * Handle parsing errors and warnings
  */
@@ -673,7 +665,6 @@ stmt:  AlterDatabaseSetStmt		{ output_statement($1, 0, connection); }
 			struct cursor *ptr;
 			struct arguments *p;
 
-		mm();
 			for (ptr = cur; ptr != NULL; ptr=ptr->next)
 			{
 				if (strcmp(ptr->name, $1) == 0)
@@ -2632,7 +2623,6 @@ DeclareCursorStmt:  DECLARE name cursor_options CURSOR opt_hold FOR SelectStmt
 			this = (struct cursor *) mm_alloc(sizeof(struct cursor));
 
 			/* initial definition */
-			mm();
 			this->next = cur;
 			this->name = $2;
 			this->connection = connection;
diff --git a/src/interfaces/ecpg/preproc/variable.c b/src/interfaces/ecpg/preproc/variable.c
index 83b56ac9dc..be96e18c0c 100644
--- a/src/interfaces/ecpg/preproc/variable.c
+++ b/src/interfaces/ecpg/preproc/variable.c
@@ -137,7 +137,7 @@ find_struct(char *name, char *next, char *end)
 		/* restore the name, we will need it later */
 		*next = c;
 
-		return find_struct_member(name, end, p->type->u.element->u.members, p->brace_level);
+		return find_struct_member(name, ++end, p->type->u.element->u.members, p->brace_level);
 	}
 	else
 	{
@@ -260,6 +260,37 @@ remove_variables(int brace_level)
 	{
 		if (p->brace_level >= brace_level)
 		{
+			/* is it still referenced by a cursor? */
+			struct cursor *ptr;
+
+                        for (ptr = cur; ptr != NULL; ptr = ptr->next)
+			{
+				struct arguments *varptr, *prevvar;
+
+				for (varptr = prevvar = ptr->argsinsert; varptr != NULL; varptr = varptr->next)
+				{
+					if (p == varptr->variable)
+					{
+						/* remove from list */
+						if (varptr == ptr->argsinsert)
+							ptr->argsinsert = varptr->next;
+						else
+							prevvar->next = varptr->next;
+					}
+				}
+				for (varptr = ptr->argsresult; varptr != NULL; varptr = varptr->next)
+				{
+					if (p == varptr->variable)
+					{
+						/* remove from list */
+						if (varptr == ptr->argsresult)
+							ptr->argsresult = varptr->next;
+						else
+							prevvar->next = varptr->next;
+					}
+				}
+			}
+							
 			/* remove it */
 			if (p == allvariables)
 				prev = allvariables = p->next;
-- 
2.11.0