[mono] Fix an uninitialized memory access in the ABCREM pass. (#56508)

Detected by valgrind.

diff --git a/src/mono/mono/mini/abcremoval.c b/src/mono/mono/mini/abcremoval.c
index 7c72112..44317cd 100644 (file)
--- a/src/mono/mono/mini/abcremoval.c
+++ b/src/mono/mono/mini/abcremoval.c
@@ -453,7 +453,8 @@ get_relations_from_previous_bb (MonoVariableRelationsEvaluationArea *area, MonoB
        MonoValueRelation branch_relation;
        MonoValueRelation symmetric_relation;
        gboolean code_path;
-       
+
+       memset (relations, 0, sizeof (MonoAdditionalVariableRelationsForBB));
        INITIALIZE_VALUE_RELATION (&(relations->relation1.relation));
        relations->relation1.relation.relation_is_static_definition = FALSE;
        relations->relation1.relation.next = NULL;