------- Comment #10 from jengliang at gmail dot com 2010-03-06 01:37 ------- Hi Manuel,
I think it is a good idea to warn about narrowing both from a type to another type, and from a type to a bit-field. For new codes, one should use the bit-masking technique for bit-field narrowing just as one should use type-casting for general narrowing. However, with so many lines of legacy code out there using bit-filed that have been proven to work, it doesn't make sense to revisit/modify them. Would it be possible for gcc to provide a -Wbitfield-conversion flag in new releases and make 39170 an enhancement (preferably high priority)? -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39170
