From 0869289348bdd8206d0128b720507ffb857459a5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marc=20Andr=C3=A9=20Tanner?= <mat@brain-dump.org>
Date: Wed, 17 Feb 2016 10:49:32 +0100
Subject: map: set errno to EEXIST when trying to map_put a duplicate value

---
 map.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/map.c b/map.c
index cff659e..48590b3 100644
--- a/map.c
+++ b/map.c
@@ -113,6 +113,7 @@ bool map_put(Map *map, const char *k, const void *value)
 		if (key[byte_num] == '\0') {
 			/* All identical! */
 			free(key);
+			errno = EEXIST;
 			return false;
 		}
 	}
-- 
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