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-rw-r--r--src/stdlib/lists.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/stdlib/lists.c b/src/stdlib/lists.c
index 9753cd86..3cc99b17 100644
--- a/src/stdlib/lists.c
+++ b/src/stdlib/lists.c
@@ -6,6 +6,7 @@
#include <stdint.h>
#include <sys/param.h>
+#include "../util.h"
#include "integers.h"
#include "lists.h"
#include "math.h"
@@ -227,7 +228,7 @@ void List$remove_item(List_t *list, void *item, Int_t max_removals, const TypeIn
}
public
-OptionalInt_t List$find(List_t list, void *item, const TypeInfo_t *type) {
+PUREFUNC OptionalInt_t List$find(List_t list, void *item, const TypeInfo_t *type) {
const TypeInfo_t *item_type = type->ListInfo.item;
for (int64_t i = 0; i < (int64_t)list.length; i++) {
if (generic_equal(item, list.data + i * list.stride, item_type)) return I(i + 1);