[Qt-creator] iOS release build uncount issues - implicit conversion loses integer precision

[ekke]

debug build and run works well

but release build I'm getting thousands of issues like this one:

/daten/_qt_sdks/sdk_590/5.9/ios/include/QtCore/qvector.h:841: warning:
implicit conversion loses integer precision: 'long' to 'int'
[-Wshorten-64-to-32]
                return n - d->begin();
                ~~~~~~ ~~^~~~~~~~~~~~

any idea what could be wrong ?

  * Qt 5.9
  * Xcode 8.3.3
  * iOS device 10.3.2
  * macOS 10.12.5
  * Creator 4.3

thx

ekke

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