We bumped into a compiler bug specific for g++ 5.2.1 when running CI for dev 
branch on RHEL 7.2 (gcc 5.2.1). Nested structs don't get their constructors 
called under some circumstances. See: 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67550.


A possible workaround for the issue can be found from here: 
https://codereview.qt-project.org/#/c/161071/


There are issues with gcc 4.9.2 also and those have been discussed in here: 
http://lists.qt-project.org/pipermail/development/2015-March/020632.html.<http://lists.qt-project.org/pipermail/development/2015-March/020632.html>


<http://lists.qt-project.org/pipermail/development/2015-March/020632.html>

What do you think, where is the best place to document these issues? Is it 
supported platforms page, page that lists X11 requirements, some known issues 
page or something else?


- Milla

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