Fix unknown option name length computation in set_error

[argpar.git] / argpar / argpar.c

diff --git a/argpar/argpar.c b/argpar/argpar.c
index 47056b89f069bd3b100eaed3c874a1b55e62d95a..1c3a06178189e90ca93d8564121183f2c9ddc1c0 100644 (file)
--- a/argpar/argpar.c
+++ b/argpar/argpar.c
@@ -288,7 +288,7 @@ int set_error(struct argpar_error ** const error,
 
        if (unknown_opt_name) {
                (*error)->unknown_opt_name = ARGPAR_CALLOC(char,
-                       strlen(unknown_opt_name) + 1 + is_short ? 1 : 2);
+                       strlen(unknown_opt_name) + 1 + (is_short ? 1 : 2));
                if (!(*error)->unknown_opt_name) {
                        goto error;
                }