[Bug c/50476] Warn of pointer set to object whose lifetime is limited

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=50476
Bug 50476 depends on bug 60517, which changed state.

Bug 60517 Summary: warning/error for taking address of member of a temporary 
object
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60517

           What    |Removed                     |Added
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             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED