1 files changed, 4 insertions, 3 deletions
diff --git a/src/util.c b/src/util.c
index 58fd5ec..45bbd98 100644
--- a/src/util.c
+++ b/src/util.c
@@ -190,11 +190,12 @@ int write_dump(size_t base, size_t len, const void *data, const char *dumpfile,
         return -1;
 }
 
-int is_int(const char *s)
+long is_int(const char *s)
 {
+        long i = strtol(s, (char **)NULL, 10);
         char _s[3];
-        snprintf(_s, 3, "%ld", strtol(s, (char **)NULL, 10));
-        return !strcmp(s, _s);
+        snprintf(_s, 3, "%ld", i);
+        return strcmp(s, _s)==0 ? i : -1;
 }