http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55783
Jonathan Wakely <redi at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |diagnostic --- Comment #8 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-12-22 00:55:31 UTC --- Comment 6 misinterprets the standard in multiple ways :) Narrowing conversions do require a diagnostic, but a warning *is* a diagnostic, so G++ is compliant in this regard, this is not a GNU extension. Whether the diagnostic should default to a warning or an error or a "pedwarn" (the category of diagnostic enabled by -pedantic and made into errors by -pedantic-errors) is debatable, but the current behaviour is the result of a conscious decision and is not a bug (certainly not Severity=major)