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  1. Qt
  2. QTBUG-98356

JIT crash on invalid yield syntax

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Details

    • dde1d86baabac1eddd84a11b7d2ed49e26c511bd (qt/qtdeclarative/dev) 762e70ea2ec028d0ce1659ed4ae8fc2ec47d950f (qt/qtdeclarative/6.2) 0e88794676 (qt/tqtc-qtdeclarative/5.15)

    Description

      This code :

      function *a() {
    (function() { yield 1; })();
}
let it = a();
it.next();

      is accepted as valid syntax leading to a crash when JIT kicks in : 

      QV4::JIT::BaselineJIT::generate_Yield()
QV4::Moth::ByteCodeHandler::decode(const char * code, unsigned int len)
QV4::JIT::BaselineJIT::generate()

       PS: I wasn't able to crash the app with the code above which is derived from our real world crash and fix knowledge on this.

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            qtqmlteam Qt Qml Team User
            vrouille Vincent Rouillé
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              Created:
              Updated:
              Resolved:

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