From: Daniel Stenberg <daniel@haxx.se>
Date: Thu, 21 Dec 2023 08:50:00 +0000 (+0100)
Subject: tool_getparam: do not try to expand without an argument
X-Git-Tag: curl-8_6_0~186
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=d187f5194813463b0bae4d4d5a3368e0ffcdfe54;p=thirdparty%2Fcurl.git

tool_getparam: do not try to expand without an argument

This would lead to a segfault.

Fixes #12565
Reported-by: Geeknik Labs
Closes #12575
---

diff --git a/src/tool_getparam.c b/src/tool_getparam.c
index 6b256f8224..79110eb7d2 100644
--- a/src/tool_getparam.c
+++ b/src/tool_getparam.c
@@ -822,7 +822,7 @@ ParameterError getparameter(const char *flag, /* f or -long-flag */
       err = PARAM_NO_NOT_BOOLEAN;
       goto error;
     }
-    else if(expand) {
+    else if(expand && nextarg) {
       struct curlx_dynbuf nbuf;
       bool replaced;