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From: Fernando Rodriguez <frodriguez.developer@outlook.com>
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] Re: [OFF TOPIC] Qt Creator unable to access containers in debug mode
Date: Tue, 24 Mar 2015 16:07 -0400
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On Tuesday, March 24, 2015 9:32:07 PM Nikos Chantziaras wrote:
> On 24/03/15 21:12, Fernando Rodriguez wrote:
> > On Tuesday, March 24, 2015 10:07:56 AM Francisco Ares wrote:
> >> Hi,
> >>
> >> Recently - but can't figure out exactly when - Qt Creator has become 
unable
> >> to access Qt containers (where the STL ones work as expected) on the 
debug
> >> panel.  It shows <not accessible> in place of the expected item quantity
> >> for a QList, for instance, but for a std::vector<std::string>, it works,
> >> allowing inspection of all items.
> >>
> >> Any hints on what I may be doing wrong? The headers are all accessible, 
for
> >> instance. Should I build Qt with debug symbols enabled, as recommended 
for
> >> glibc?
> >>
> >> Using current Qt 4.8.5, Qt Creator 2.8.1, gdb 7.7.1, gcc 4.8.3
> >>
> >> Thanks!
> >> Francisco
> >
> > Try to print it from gdb cli, if it works you'll know the issue QtCreator,
> > otherwise you're likely missing some symbols. You should always compile 
any
> > development libraries with debug symbols.
> 
> You don't need debug symbols for inspecting containers. They are not 
> needed. The only reason for enabling debug symbols in Qt is if you want 
> to step into Qt's code.

Thank you. You do need symbols though, just not Qts for this specific case. 
There are many reasons why you should compile your development libraries with 
symbols besides stepping into the code. Such as getting a backtrace. Even 
proprietary (closed-source) libraries often make the symbols available for 
this reason.

-- 
Fernando Rodriguez