Segmentation violation using the gclip tool on Fedora about clipboard HOT 8 OPEN

Thanks for the report. Unfortunately, we do not have a fedora system to test this issue. We would have to rely on the community to tackle this issue.

Contributions are welcome.

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this might depend by two things, either P_XOpenDisplay is NULL but doesn't get checked before being used here, or the $DISPLAY environment variable is not set (if the argument of XOpenDisplay is NULL as in this case, $DISPLAY is used instead).

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Just did a quick test and if the function pointer is correctly initialized, it shouldn't crash even if $DISPLAY is not set ... so there's a good chance that this SIGSEGV is caused by the function pointer being NULL (also hinted by that addr=0x0 pc=0x0). I suggest to check for those pointers in the initX11 function and return 1 only if they are all set. Also what's the point of looping 42 times? :D

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@changkun I confirm this bug is not specifically related to Fedora.

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@zangarmarsh Thanks for confirming the issue. Could you maybe share more details on how to reproduce the issue? More specifically, which environment, in which steps that you did?

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@changkun It occurs in Ubuntu X11. I also tried in wayland and it works correctly.

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@zangarmarsh Is the problem occurring on the latest commit?

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@changkun I updated it to version 0.6.3 and it works! Thank you.

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