Lib: correct sign conversion issue in amqp_url.c

1 files changed, 3 insertions, 2 deletions

diff --git a/librabbitmq/amqp_url.c b/librabbitmq/amqp_url.c
index 636a9de..6079106 100644
--- a/librabbitmq/amqp_url.c
+++ b/librabbitmq/amqp_url.c
@@ -43,6 +43,7 @@
 #endif
 
 #include "amqp_private.h"
+#include <limits.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -92,14 +93,14 @@ static char find_delim(char **pp, int colon_and_at_sign_are_delims)
       int chars;
       int res = sscanf(from, "%2x%n", &val, &chars);
 
-      if (res == EOF || res < 1 || chars != 2)
+      if (res == EOF || res < 1 || chars != 2 || val > CHAR_MAX)
         /* Return a surprising delimiter to
            force an error. */
       {
         return '%';
       }
 
-      *to++ = val;
+      *to++ = (char)val;
       from += 2;
       break;
     }