Qt Creator, syntax checking do not recognize gcc extensions.

[xtech]

Is there any way to turn off or add special case to Qt Creator syntax checking? I ask because now when I use for example gcc "Case Ranges" extension like

switch( size ) {
    case 1:
        // do x
    break;
    case 2 ... 255:
        // do y
    break;
    case 256 ... 512:
        // do z
    break;
}

Qt Creator 4.1.1 show red underline warning which disturb reading code.

[kshegunov]

I don't think you can fix the underline in creator, no. Why not use a simple if-else and not rely on non-standard extensions?

if (size == 1)
    // do x
else if (size >= 2 && size <= 255)
   // do y
// ... and so on

[mrjj]

Hi
I support @kshegunov recommendation to not use those extensions.
However, there is the following feature
(Tools->Options menu)

You can change how the error underlining should look and hence also remove it.
Simply COPY the color theme and u can alter it.

However this applies to all cases so not optimal but its still marked in the side so
you are not killing the feature completely.

[xtech]

@kshegunov

Because as far as I know, switch can be sometimes better optimized by compiler and for me switch is more readable but it is a matter of taste.

I also think that this extension should be in standard, but that is another matter.
I report this behavior of Qt Creator to Qt Team as suggestion maybe it something will change...

Thanks all,

[kshegunov]

@xtech said in Qt Creator, syntax checking do not recognize gcc extensions.:

Because as far as I know, switch can be sometimes better optimized by compiler

Not in this particular case.