[Interest] Very slow start-up on MacOS

[Rutledge Shawn]

On 12 Nov 2013, at 12:47 PM, Marc Freese wrote:

> Hello,
> 
> I hope this is the right place to post this, I was encouraged to do so here.
> 
> Following is a bug in Qt5 I believe:
> 
> On MacOS Snow Leopard and MacOS Mavericks (MacOS Lion (10.7.3), Windows 
> and Linux work fine):
> 
> When my application starts, it takes about 60 seconds, where it normally 
> takes less than 10 seconds. The console output is somewhat cryptic:
> 
> *** __NSAutoreleaseNoPool(): Object 0x1012e2a30 of class QNSView 
> autoreleased with no pool in place - just leaking
> *** __NSAutoreleaseNoPool(): Object 0x100634240 of class 
> NSTextInputContext autoreleased with no pool in place - just leaking
> *** __NSAutoreleaseNoPool(): Object 0x1012f3a30 of class NSCFArray 
> autoreleased with no pool in place - just leaking
> 
> and so on...
> 
> Checking in my code, following instruction is the culprit:
> 
> statusBar=new QPlainTextEdit();
> 
> Above instruction makes the start-up process stall for almost 60 
> seconds. But the widget finally works fine, and the application runs at 
> normal speed.
> 
> Removing that instruction makes Qt stall at some other place, which 
> makes me think that it is linked with some internal initialization that 
> Qt might be doing wrong.

I don't know what is the problem right away, but it sounds like you should post a bug on bugreports.qt-project.org.  And if it's possible to provide an example to reproduce the problem, or modify one of the existing examples to reproduce it, that would be nice.