schema compile BUGFIX invalid enum ext parent pointer

Fixes #2447

Author: michalvasko

src/printer_context.c

@@ -982,6 +982,7 @@ ctxp_children(const struct lysc_node *orig_child, struct lysc_node **child, stru
         ch = *mem;
         *mem = (char *)*mem + CTXP_MEM_SIZE(node_size);
 
+        /* referenced by pointers */
         ly_ctx_compiled_addr_ht_add(addr_ht, orig_child, ch);
         ctxp_node(orig_child, ch, addr_ht, ptr_set, mem);
 

src/schema_compile_node.c

@@ -1623,6 +1623,13 @@ lys_compile_type_enums(struct lysc_ctx *ctx, const struct lysp_type_enum *enums_
         }
     }
 
+    /* revalidate the backward parent pointers from extensions now that the array is final */
+    LY_ARRAY_FOR(*bitenums, u) {
+        LY_ARRAY_FOR((*bitenums)[u].exts, v) {
+            (*bitenums)[u].exts[v].parent = &(*bitenums)[u];
+        }
+    }
+
 done:
     return ret;
 }

tests/utests/schema/test_schema.c

@@ -2157,7 +2157,7 @@ test_compiled_print(void **state)
             "  leaf b {type string;}"
             "  leaf c {type uint32;}"
             "  leaf d {type empty;}"
-            "  leaf e {type int8;}"
+            "  leaf e {type enumeration {enum one {m1:a;} enum two;}}"
             "}"
             "}"
             "rpc h {"
@@ -2240,7 +2240,7 @@ test_compiled_print(void **state)
             "    <b>unique</b>\n"
             "    <c>123</c>\n"
             "    <d/>\n"
-            "    <e>-10</e>\n"
+            "    <e>two</e>\n"
             "  </g>\n"
             "  <a xmlns=\"urn:m2\" xmlns:m1=\"urn:m1\">m1:id1</a>\n"
             "</root>\n";