http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52283
--- Comment #1 from chrbr at gcc dot gnu.org 2012-02-16 16:49:38 UTC --- Note that the TREE_NO_WARNING is introduced in convert_to_integer:596 while because of the unsigned-int type conversion in build_c_cast. A first attempt to fix is to set TREE_NO_WARNING on the constant (!CAN_HAVE_LOCATION_P) without creating the NOP_EXPR. But Richard explained: On 02/16/2012 01:58 PM, Richard Guenther wrote: > You cannot have it on possibly shared tree nodes. CAN_HAVE_LOCATION_P > tree nodes are not shared (the reverse is not true). >
