*/
int index_name_pos(const struct index_state *, const char *name, int namelen);
+/*
+ * Some functions return the negative complement of an insert position when a
+ * precise match was not found but a position was found where the entry would
+ * need to be inserted. This helper protects that logic from any integer
+ * underflow.
+ */
+static inline int index_pos_to_insert_pos(uintmax_t pos)
+{
+ if (pos > INT_MAX)
+ die("overflow: -1 - %"PRIuMAX, pos);
+ return -1 - (int)pos;
+}
+
#define ADD_CACHE_OK_TO_ADD 1 /* Ok to add */
#define ADD_CACHE_OK_TO_REPLACE 2 /* Ok to replace file/directory */
#define ADD_CACHE_SKIP_DFCHECK 4 /* Ok to skip DF conflict checks */