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  1. Qt
  2. QTBUG-111262

Review <ctype.h> uses [Qt]

XMLWordPrintable

    • 8
    • f6b780b58 (dev), eee36a6ed (6.5)

      The <cctype> functions are locale-dependent. Also, they require that the argument is 0..255 or EOF, so it's UB to even feed a char! You need to cast to uchar first! So, basically all our uses of <cctype> functions are UB!

      Please check your respective code bases, book patches, if any, onto this ticket, and, once merged, remove your component from the Jira field.

      QTBUG-109235 dealt with toupper/tolower, specifically. This ticket is about all the other <cctype> functions, e.g. isprint().

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            cnn Qt Core & Network
            mmutz Marc Mutz
            Vladimir Minenko Vladimir Minenko
            Alex Blasche Alex Blasche
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