QSettings issue mingw32 vs. msvc

[Enrico]

Made a simple sample, you can get i here www.daniac.dk/QSettingsTest.zip

Exact same issue here, might be a bug

[mrjj]

@Enrico
hi
i tried mingw on win 10. no messages. ( as expected)

then i tried
windows 7, visual studio 2013 , 32 bit
and no messages also?

both Qt 5.5.1/ 5.7

let me try 5.7 in VS.
and see if it makes any difference.

[Enrico]

Sorry but when you say no messages.

The only messages is from qDebug()

Have changed the sample to show the results in a plaintext box - Sorry

[mrjj]

@Enrico
oh, i expected some window dialog to pop up saying access denied :)

so what is the sign of error im looking for ?

[Enrico]

I have modified and updated the sample with a plaintextedit showwing the results - Sorry

mingw32 - Output:
Getting MyNewPort value:COM2
Setting MyNewPort=COM2 status:0 <- Success
Getting MyNewPort value:COM2

msvc - Output:
Getting MyNewPort value:default <- Failed reading also
Setting MyNewPort=COM2 status:1 <- Failed writing
Getting MyNewPort value:default <- Failed reading also

[mrjj]

@Enrico
hi
sorry for the delay

win 7, vs 2013 , Qt 5.7

I get
Getting MyNewPort value:default
Setting MyNewPort=COM2 status:1
Getting MyNewPort value:default

so failed. ( thx @VRonin )

mingw
Getting MyNewPort value:COM2
Setting MyNewPort=COM2 status:0
Getting MyNewPort value:COM2

[VRonin]

@mrjj status: 1 = fail

[mrjj]

@VRonin
thx. need more coffee :)
so sample did fail :)

Can anyone else try the sample with VS compiler
and say if they get same result before we call it a bug :)

[VRonin]

MSVC2013 win 7 Qt 5.5.1 and 5.7.0 both 32 and 64 bit versions all failing

[Enrico]

I have filed a bug
https://bugreports.qt.io/browse/QTBUG-55257