Fix qHash(QFontEngine::FaceId)

There were two problems:

1. qHash() hashed FaceId::uuid, but op== didn't use it for
   determining equality. Thus, x == y => qHash(x) == qHash(y)
   might be broken if fileName and uuid have an orthogonal
   component, if you excuse my vector analogy.

2. To hash fileName and uuid, it concatenated the two,
   causing a temporary QByteArray to be created just for
   hashing its contents. That prevented marking qHash()
   as nothrow.

Fix by using new QtPrivate::QHashCombine and adding
uuid to the list of fields compared in op==.

Change-Id: I49f2379d514d6d3669929e737562cf6de823127e
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@theqtcompany.com>

0 files changed, 0 insertions, 0 deletions