------- Comment #3 from manu at gcc dot gnu dot org 2009-03-08 03:30 ------- > The old behavior was just fine!
You absolutely did not understand what the old -Wconversion did. http://gcc.gnu.org/wiki/NewWconversion But if you still want the old behaviour, just use -Wtraditional-conversion. > I'm sure many people do not even realize they are NOT getting implicit > conversions warnings anymore because they are not caught by "-Wall" See the FAQ in the link above. > anymore. We only discovered this be tracing a bug in our code! We then The new Wconversion is mentioned in the changes of GCC 4.3. > turned on "-Wconversion" only to discover thousands of warnings with no > way practical way to fix them. I admit it is unfortunate that there is no way to specify casts to bit-fields. But that is hardly the fault of Wconversion. Nonetheless, it could be possible to use bitwise-and to tell Wconversion that some conversion is really desired. Example: struct foo { int a : 2; }; void assign( struct foo v, int x ) { v.a = x & 0x3; } Do you think this would be an acceptable solution? (I don't know if this works now in GCC 4.4) -- manu at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |manu at gcc dot gnu dot org Status|UNCONFIRMED |WAITING Summary|-Wconversion useless |cannot silence -Wconversion | |warnings for bit-fields http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39170
