Use unsigned integers in SDS header.

This raises the max string to 4GB without any downside.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/sds.h b/src/sds.h
index 9a604021c..37aaf7a28 100644
--- a/src/sds.h
+++ b/src/sds.h
@@ -39,8 +39,8 @@
 typedef char *sds;
 
 struct sdshdr {
-    int len;
-    int free;
+    unsigned int len;
+    unsigned int free;
     char buf[];
 };