Add graphviz visualization for the parse tree

1 files changed, 3 insertions, 0 deletions

diff --git a/src/badlib.h b/src/badlib.h
index 71f4bee..4944d2e 100644
--- a/src/badlib.h
+++ b/src/badlib.h
@@ -832,6 +832,9 @@ _array_maybe_grow(void *arr, sz type_size, Arena *a) {
 
 static inline char *
 _array_insert(char *arr, const char *src, sz n_bytes, sz type_size, Arena *a) {
+    if (!arr) {
+        arr = _array_reserve(0, 0, a);
+    }
     ArrayHeader *head = array_head(arr);
     sz new_size = n_bytes + head->size;
     if (new_size > head->cap * type_size) {