[Qt-creator] OS X Debugger (LLDB) Not showing number of items in containers

Michael Jackson imikejackson at gmail.com
Tue Feb 18 16:58:21 CET 2014

On Feb 18, 2014, at 10:04 AM, Michael Jackson <imikejackson at gmail.com> wrote:

> On Feb 18, 2014, at 5:16 AM, Poenitz Andre <Andre.Poenitz at digia.com> wrote:
>> Michael Jackson [imikejackson at gmail.com] wrote:
>>> int main(int argc, char *argv[])
>>> {
>>> QVector<size_t> dims(1, 3);
>>> qDebug() << dims[0];  <== Breakpoint here
>>> return 0;
>>> } 
>>> The above problem reproduces the issue that I am having.
>>> I am on OS X 10.8.5 with a self built Qt 4.8.5. I have Xcode 4.6.3 
>>> installed. I have set the Debugger to use lldb. When I step through the
>>> above program and stop at the line marked above the debugger says
>>> that the "dims" variable has "0" items.
>> This might depend on the actual version of LLDB/Clang/gcc
>> I see <1 items> (and it's expandable with subitem [0] showing "3") with
>> LLDB 300.2.47, and 179.6 (which came with Xcode 4.6.3) I think.
>> Which LLDB version and compiler are you using exactly?
>> Maybe you can put a complete log (right hand side of Windows->Views
>> ->Debugger Log) on bugreports.qt-project.org? 
>> Andre'
> 501:[mjackson at Ferb:~]$ which lldb
> /usr/bin/lldb
> 502:[mjackson at Ferb:~]$ lldb --version
> LLDB-179.5
> 503:[mjackson at Ferb:~]$ /Applications/Xcode.app/Contents/Developer/usr/bin/lldb --version
> LLDB-179.6
> 504:[mjackson at Ferb:~]$ clang --version
> Apple LLVM version 4.2 (clang-425.0.28) (based on LLVM 3.2svn)
> Target: x86_64-apple-darwin12.5.0
> Thread model: posix
> 508:[mjackson at Ferb:~]$ which gcc
> /usr/bin/gcc
> 509:[mjackson at Ferb:~]$ gcc --version
> i686-apple-darwin11-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.11.00)
> Copyright (C) 2007 Free Software Foundation, Inc.
> This is free software; see the source for copying conditions.  There is NO
> What OS X Version are you using? 
> Thanks 
> Mike Jackson

And one more update to this saga. I tried this on my OS X 10.9.1/Xcode 5 VM and I get the same issue. The ONLY thing in common with all of this is that I am using all my own compiled Qt versions. I assume that has something to do with the issue. I am downloading the Qt 4.8.5 binaries from the qt-project web site and will try rebuilding against that to see if that solves the issue.

Mike Jackson
BlueQuartz Software

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