[konsole] [Bug 445805] New: Konsole freezes when printing certain characters

[Marco Rebhan]

https://bugs.kde.org/show_bug.cgi?id=445805

            Bug ID: 445805
           Summary: Konsole freezes when printing certain characters
           Product: konsole
           Version: master
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: font
          Assignee: konsole-devel at kde.org
          Reporter: me at dblsaiko.net
  Target Milestone: ---

SUMMARY
Since 8d9cdd1 Move hasSamecolors to Character [1], konsole freezes when
starting tmux (and others like downloading a file with wget).

More specifically, the freeze can be triggered by printing for example ‘ or ’
(opening/closing quotes) which appear in the output of wget.

[1]:
https://invent.kde.org/utilities/konsole/-/commit/8d9cdd1b00d8e7d9ef938bcbb57464eed62c6a9e

STEPS TO REPRODUCE
1. Open konsole
2. Run xxd -r <<< '0: e280 98' to print the ‘ character, or start tmux or
download a file with wget

OBSERVED RESULT
Konsole will freeze and stay unresponsive until you kill it

EXPECTED RESULT
Konsole displays terminal output correctly

SOFTWARE/OS VERSIONS
Operating System: Gentoo 2.8
KDE Plasma Version: 5.23.80
KDE Frameworks Version: 5.89.0
Qt Version: 5.15.2
Kernel Version: 5.14.20-gentoo-dist (64-bit)
Graphics Platform: Wayland
Processors: 12 × AMD Ryzen 5 5600X 6-Core Processor
Memory: 23.4 GiB of RAM
Graphics Processor: Radeon RX Vega

ADDITIONAL INFORMATION

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