RNA: report error on struct naming collision

Fixes T52463, error instead of crash.

1 files changed, 14 insertions, 3 deletions

diff --git a/source/blender/makesrna/intern/rna_nodetree.c b/source/blender/makesrna/intern/rna_nodetree.c
index 00b881dabc7..f15605d0f83 100644
--- a/source/blender/makesrna/intern/rna_nodetree.c
+++ b/source/blender/makesrna/intern/rna_nodetree.c
@@ -630,9 +630,13 @@ static StructRNA *rna_NodeTree_register(
 
 	/* check if we have registered this tree type before, and remove it */
 	nt = ntreeTypeFind(dummynt.idname);
-	if (nt)
+	if (nt) {
 		rna_NodeTree_unregister(bmain, nt->ext.srna);
-	
+	}
+	if (!RNA_struct_available_or_report(reports, identifier)) {
+		return NULL;
+	}
+
 	/* create a new node tree type */
 	nt = MEM_callocN(sizeof(bNodeTreeType), "node tree type");
 	memcpy(nt, &dummynt, sizeof(dummynt));
@@ -1389,11 +1393,18 @@ static bNodeType *rna_Node_register_base(Main *bmain, ReportList *reports, Struc
 		            identifier, (int)sizeof(dummynt.idname));
 		return NULL;
 	}
+	if (!RNA_struct_available_or_report(reports, identifier)) {
+		return NULL;
+	}
 
 	/* check if we have registered this node type before, and remove it */
 	nt = nodeTypeFind(dummynt.idname);
-	if (nt)
+	if (nt) {
 		rna_Node_unregister(bmain, nt->ext.srna);
+	}
+	if (!RNA_struct_available_or_report(reports, identifier)) {
+		return NULL;
+	}
 	
 	/* create a new node type */
 	nt = MEM_callocN(sizeof(bNodeType), "node type");