1 files changed, 19 insertions, 0 deletions
diff --git a/src/nxt_string.c b/src/nxt_string.c
index 1ca595a1..ed4ff955 100644
--- a/src/nxt_string.c
+++ b/src/nxt_string.c
@@ -1,11 +1,19 @@
 
 /*
  * Copyright (C) Igor Sysoev
+ * Copyright (C) Alejandro Colomar <alx@kernel.org>
  * Copyright (C) NGINX, Inc.
  */
 
 #include <nxt_main.h>
 
+#include <errno.h>
+#include <stdlib.h>
+
+
+static inline unsigned long nxt_strtoul_noneg(const char *nptr,
+    char **restrict endptr, int base);
+
 
 nxt_str_t *
 nxt_str_alloc(nxt_mp_t *mp, size_t length)
@@ -842,3 +850,14 @@ nxt_base64_decode(u_char *dst, u_char *src, size_t length)
 
     return (p - dst);
 }
+
+
+static inline unsigned long
+nxt_strtoul_noneg(const char *nptr, char **restrict endptr, int base)
+{
+    if (strtol(nptr, endptr, base) < 0) {
+        errno = ERANGE;
+        return 0;
+    }
+    return strtoul(nptr, endptr, base);
+}