------- Comment #1 from pinskia at gcc dot gnu dot org 2010-06-07 17:34 ------- > foo = bar << 20;
Yes this can overflow but so can "bar * 2" and "bar + 1". Maybe I am missing something here because we don't warn for those cases. Do you want a warning where the assignment happens to be a wider type? That is: uint64_t = uint32_t OP uint32_t; With an implicit casting to uint64_t? -- pinskia at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Severity|normal |enhancement Component|middle-end |c Keywords| |diagnostic http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44420