There are a number of places in the compiler that assume that TRULY_NOOP_TRUNCATION will always be true.
-- Summary: TRULY_NOOP_TRUNCATION ignored Product: gcc Version: 3.4.3 Status: UNCONFIRMED Keywords: wrong-code Severity: normal Priority: P2 Component: middle-end AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: amylaar at gcc dot gnu dot org CC: gcc-bugs at gcc dot gnu dot org OtherBugsDependingO 17652 nThis: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20396