https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67064
--- Comment #16 from Jens Maurer <jens.maurer at gmx dot net> ---
(In reply to Jason Merrill from comment #14)
> '-Wpedantic' does not cause warning messages for use of the
> alternate keywords whose names begin and end with '__'. Pedantic
> warnings are also disabled in the expression that follows
> '__extension__'. However, only system header files should use
> these escape routes; application programs should avoid them.
Agreed, but this:
struct s {
int i;
};
register struct s *reg asm( "si" );
(note: no double underscores) should issue a diagnostic for violating 7.1.1p2
when invoking
> g++ -std=c++14 -Wall -Wextra -Wpedantic -c reg-asm.cc
right? It doesn't. Total silence.
Leaving off the "asm" part gives
reg-asm.cc:6:20: error: register name not specified for 'reg'
register struct s *reg;
