crash destructing static QMap<QString, QIcon>

The attached small program adds a QIcon to a static QMap<QString,QIcon>. When the program exits, the destructor of the QMap<QString, QIcon> crashes with the following call stack.

0 QIcon::~QIcon() /home/gary/shared/sw/qt/qt-everywhere-opensource-src-5.0.0/qtbase/lib/libQtGui.so.5 0 0xb76c5d5d
1 QMapNode<QString, QIcon>::destroySubTree qmap.h 269 0x804ab1e
2 QMapData<QString, QIcon>::destroy qmap.h 236 0x804a88d
3 QMap<QString, QIcon>::~QMap qmap.h 334 0x804a5f3
4 __run_exit_handlers exit.c 78 0xb6f27f61
5 __GI_exit exit.c 100 0xb6f27fed
6 __libc_start_main libc-start.c 258 0xb6f0e4db
7 _start 0 0x80492d1