[Bug c/52923] Warn if making external references to local stack memory

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52923

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-04-10 08:03:13 UTC ---
See also PR 49974 requesting the same thing for C++

and PR 51270 and PR 44859 are similar but for temporaries