Fix API to update the node type to Node_var when setting an undefined variable.

2 files changed, 9 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 73cf0229..ae49f560 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2012-12-18         Andrew J. Schorr     <aschorr@telemetry-investments.com>
+
+	* gawkapi.c (sym_update_real): If setting a scalar variable that exists
+	already in an undefined state with type set to Node_var_new, we must
+	update the type to Node_var if the new value is not undefined.
+
 2012-12-18         Arnold D. Robbins     <arnold@skeeve.com>
 
 	* awkgram.y (tokentab): "extension" needs to be inside ifdef DYNAMIC.
diff --git a/gawkapi.c b/gawkapi.c
index b67275c1..cd09cddc 100644
--- a/gawkapi.c
+++ b/gawkapi.c
@@ -603,6 +603,9 @@ sym_update_real(awk_ext_id_t id,
 	    && (node->type == Node_var || node->type == Node_var_new)) {
 		unref(node->var_value);
 		node->var_value = awk_value_to_node(value);
+		if (node->type == Node_var_new && value->val_type != AWK_UNDEFINED)
+			node->type = Node_var;
+
 		/* let the extension change its own variable */
 		if (is_const)
 			node->var_assign = set_constant;