[Bug c++/19808] miss a warning about uninitialized member usage in member initializer list in constructor

[manu at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=19808

--- Comment #28 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
Hi Anthony, adding testcases to the patch will help clarify what is working and
what you expect to work but it isn't:
https://gcc.gnu.org/wiki/HowToPrepareATestcase