Properly check strtol() results when paring values as integers

diff --git a/options.c b/options.c
index c212218f671be51c74929185f4fec9cd5c711a4c..7e62ca694f0eb141cc7c43cc5c1e9fa1fa7db38d 100644 (file)
--- a/options.c
+++ b/options.c
@@ -142,9 +142,10 @@ fw3_parse_bool(void *ptr, const char *val, bool is_list)
 bool
 fw3_parse_int(void *ptr, const char *val, bool is_list)
 {
-       int n = strtol(val, NULL, 0);
+       char *e;
+       int n = strtol(val, &e, 0);
 
-       if (errno == ERANGE || errno == EINVAL)
+       if (e == val || *e)
                return false;
 
        *((int *)ptr) = n;