-
Notifications
You must be signed in to change notification settings - Fork 145
winansi: check result before using Name for pty #1245
New issue
Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.
By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.
Already on GitHub? Sign in to your account
Conversation
NtQueryObject under Wine can return a success but fill out no name. In those situations, Wine will set Buffer to NULL, and set result to the sizeof(OBJECT_NAME_INFORMATION). Running a command such as echo "$(git.exe --version 2>/dev/null)" will crash due to a NULL pointer dereference when the code attempts to null terminate the buffer, although, weirdly, removing the subshell or redirecting stdout to a file will not trigger the crash. Alternatives include checking Buffer itself, however, I am not sure what is the official behavior of the function due to a lack of documentation. Another alternative is to check the Length field, but similar to above, I do not know what the official behavior is. This code is based on the behavior of NtQueryObject under wine and reactos. Signed-off-by: Christopher Degawa <[email protected]>
Welcome to GitGitGadgetHi @1480c1, and welcome to GitGitGadget, the GitHub App to send patch series to the Git mailing list from GitHub Pull Requests. Please make sure that your Pull Request has a good description, as it will be used as cover letter. You can CC potential reviewers by adding a footer to the PR description with the following syntax:
Also, it is a good idea to review the commit messages one last time, as the Git project expects them in a quite specific form:
It is in general a good idea to await the automated test ("Checks") in this Pull Request before contributing the patches, e.g. to avoid trivial issues such as unportable code. Contributing the patchesBefore you can contribute the patches, your GitHub username needs to be added to the list of permitted users. Any already-permitted user can do that, by adding a comment to your PR of the form Both the person who commented An alternative is the channel
Once on the list of permitted usernames, you can contribute the patches to the Git mailing list by adding a PR comment If you want to see what email(s) would be sent for a After you submit, GitGitGadget will respond with another comment that contains the link to the cover letter mail in the Git mailing list archive. Please make sure to monitor the discussion in that thread and to address comments and suggestions (while the comments and suggestions will be mirrored into the PR by GitGitGadget, you will still want to reply via mail). If you do not want to subscribe to the Git mailing list just to be able to respond to a mail, you can download the mbox from the Git mailing list archive (click the curl -g --user "<EMailAddress>:<Password>" \
--url "imaps://imap.gmail.com/INBOX" -T /path/to/raw.txt To iterate on your change, i.e. send a revised patch or patch series, you will first want to (force-)push to the same branch. You probably also want to modify your Pull Request description (or title). It is a good idea to summarize the revision by adding something like this to the cover letter (read: by editing the first comment on the PR, i.e. the PR description):
To send a new iteration, just add another PR comment with the contents: Need help?New contributors who want advice are encouraged to join [email protected], where volunteers who regularly contribute to Git are willing to answer newbie questions, give advice, or otherwise provide mentoring to interested contributors. You must join in order to post or view messages, but anyone can join. You may also be able to find help in real time in the developer IRC channel, |
@1480c1 would you prefer to continue here, or in git-for-windows#3875? |
/allow |
User 1480c1 is now allowed to use GitGitGadget. |
If I continue in git-for-windows#3875, would I have to continue in here, aka, if the one in git-for-windows is accepted, will you be the one to handle to get it upstreamed? I personally would prefer in git-for-windows since, at least I assume, it would hopefully make it to a git-for-windows release sooner, and that way I can also get a |
I did handle past contributions that way, yes. If you want to contribute this PR via GitGitGadget yourself, that's fine with me, too. I just need to know whether action is required from my side ;-) |
I will continue in the other PR and let you handle the contribution to upstream, just in case there are some other bugs with wine and such that need to be ironed out |
Unsure which branch to really base this off, so I have used maint.
Should be a simple fix for checking if NtQueryObject() actually returned a name under very
specific circumstances under Wine staging, however, I am not very confident if it's the best option.
Alternatives have been listed in the commit message.
CC: Johannes Schindelin [email protected]