From kdevelop-devel  Mon Jul 19 15:39:54 2010
From: =?utf-8?Q?Nicol=C3=A1s_Alvarez?= <nicolas.alvarez () gmail ! com>
Date: Mon, 19 Jul 2010 15:39:54 +0000
To: kdevelop-devel
Subject: Re: Silly CMake 2.8.2 regex causing slow project load in KDevelop
Message-Id: <2F5AB6DE-6565-4BEC-8885-0CF4BF95E7BE () gmail ! com>
X-MARC-Message: https://marc.info/?l=kdevelop-devel&m=127955406301432

El 19/07/2010, a las 10:07, Andreas Pakulat <apaku@gmx.de> escribió:
> On 19.07.10 09:21:16, Andreas Pakulat wrote:
>>
>> Hmm, just tried this and if I generate a release-build for your  
>> sample
>> then it takes less than a fraction of a second to run it. If I change
>> the qmake project to do a debug build it indeed takes a long time  
>> to do
>> the replacement.
>>
>> Whats the expected output of your app for the 4-digit and 3-digit
>> version number? The reason I'm asking is that I get different output
>> depending on release/debug mode compilation for the 3-digit zlib  
>> version
>> (the 4-digit always prints out "" as 3rd line).
>
> Hmm, this testcase is rather strange here on my laptop. I've replaced
> the QString::replace with QString::indexOf() as thats more clear  
> wether
> something was matched or not. I'm using Qt4.6.2 here. The result is:
>
> debug build, 4 digit version number:
> I've cancelled this after 5 minutes, seems to hit some kind of endless
> loop in QRegExp
>
> debug build, 3 digit version number:
> Instant, with proper result.
>
> release build, 4 digit version number:
> Instant, wrong result, I get -1!
>
> release build, 3 digit version number:
> Instant, wrong result, I get -1!
>
> Does anybody else see this?

Yes; take the file open() call out of that ugly Q_ASSERT. *hangs head  
in shame*


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