diff --git a/lib/src/array.h b/lib/src/array.h
index bc77e687..26cb8448 100644
--- a/lib/src/array.h
+++ b/lib/src/array.h
@@ -126,12 +126,28 @@ static inline void array__splice(VoidArray *self, size_t element_size,
   array__reserve(self, element_size, new_size);
 
   char *contents = (char *)self->contents;
-  if (self->size > old_end)
-    memmove(contents + new_end * element_size, contents + old_end * element_size,
-            (self->size - old_end) * element_size);
-  if (new_count > 0)
-    memcpy((contents + index * element_size), elements,
-           new_count * element_size);
+  if (self->size > old_end) {
+    memmove(
+      contents + new_end * element_size,
+      contents + old_end * element_size,
+      (self->size - old_end) * element_size
+    );
+  }
+  if (new_count > 0) {
+    if (elements) {
+      memcpy(
+        (contents + index * element_size),
+        elements,
+        new_count * element_size
+      );
+    } else {
+      memset(
+        (contents + index * element_size),
+        0,
+        new_count * element_size
+      );
+    }
+  }
   self->size += new_count - old_count;
 }
 
diff --git a/lib/src/language.h b/lib/src/language.h
index d7e17c3d..0057e36c 100644
--- a/lib/src/language.h
+++ b/lib/src/language.h
@@ -29,10 +29,12 @@ static inline bool ts_language_is_symbol_external(const TSLanguage *self, TSSymb
   return 0 < symbol && symbol < self->external_token_count + 1;
 }
 
-static inline const TSParseAction *ts_language_actions(const TSLanguage *self,
-                                                       TSStateId state,
-                                                       TSSymbol symbol,
-                                                       uint32_t *count) {
+static inline const TSParseAction *ts_language_actions(
+  const TSLanguage *self,
+  TSStateId state,
+  TSSymbol symbol,
+  uint32_t *count
+) {
   TableEntry entry;
   ts_language_table_entry(self, state, symbol, &entry);
   *count = entry.action_count;