1 files changed, 2 insertions, 1 deletions
diff --git a/apply.c b/apply.c
index 3de4aa4d2e..faf75b5449 100644
--- a/apply.c
+++ b/apply.c
@@ -4961,7 +4961,8 @@ static int apply_option_parse_p(const struct option *opt,
 
 	BUG_ON_OPT_NEG(unset);
 
-	state->p_value = atoi(arg);
+	if (strtol_i(arg, 10, &state->p_value) < 0 || state->p_value < 0)
+		die(_("option -p expects a non-negative integer, got '%s'"), arg);
 	state->p_value_known = 1;
 	return 0;
 }