Re: [PATCH 3/3] fix: use strvec_push_wrapper to prevent ubsan failure

From: lidongyan <502024330056@smail.nju.edu.cn>
Date: May 7, 2025, 12:19 UTC
Message-ID: <1CEABFA7-474C-4253-BB92-E3F153213F5C@smail.nju.edu.cn>
In-Reply-To: <aBsR0CUusW0Fo4Ef@pks.im>

Thank you for your suggestion. I will squash all the commits and include a detailed description in the next submission.

In short, calling parse_options may cause a memory leak when encountering unknown short options. To fix the leak, parse_options can use a user-provided allocation function, so that the user can later free the memory and avoid the leak. I also defined a macro called OPT_UNKNOWN to make it easier for users to pass in their own allocation function.

On the other hand, I think a new file should be added under t/helper/. The reason is that this new file not only serves as a test, but also provides a simple example of using OPT_UNKNOWN, which others can refer to when modifying their own option definitions to avoid memory leaks.

Show 13 quoted lines

> 2025年5月7日 15:54，Patrick Steinhardt <ps@pks.im> 写道：
> 
> On Wed, May 07, 2025 at 02:33:23AM +0000, Lidong Yan via GitGitGadget wrote:
>> From: Lidong Yan <502024330056@smail.nju.edu.cn>
>> 
>> Signed-off-by: Lidong Yan <502024330056@smail.nju.edu.cn>
> 
> This looks like another fixup-style commit. I assume that all of this
> really should be a single commit, as the latter two commits don't seem
> to do anything new compared to the first commit.
> 
> Patrick
>