[Bug c/52283] "error: case label does not reduce to an integer constant" for constant folded cast expr

[manu at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52283

--- Comment #21 from Manuel López-Ibáñez <manu at gcc dot gnu.org> 2012-02-21 
20:35:31 UTC ---
BTW, why warn_if_unused_value is in stmt.c?
The comment at the top says: /* Expands front end tree to back end RTL for GCC
*/
And warn_if_unused_value is exclusively used by the C/C++ FEs. WTF!