Bootstrap with -Wmissing-prototypes doesn't work for C++

[Ian Lance Taylor]

"H.J. Lu" <hjl.tools@gmail.com> writes:

> [hjl@gnu-33 gcc]$ cat x.c
> int
> foo (int x)
> {
>   return x;
> }
> [hjl@gnu-33 gcc]$ ./xgcc -B./ -S -O -Wmissing-prototypes x.c
> x.c:2:1: warning: no previous prototype for ‘foo’ [-Wmissing-prototypes]
> [hjl@gnu-33 gcc]$ ./g++ -B./ -S -O -Wmissing-prototypes x.c
> cc1plus: warning: command line option ‘-Wmissing-prototypes’ is valid
> for Ada/AdaWhy/C/ObjC but not for C++ [enabled by default]
> [hjl@gnu-33 gcc]$ ./g++ -B./ -S -O x.c
> [hjl@gnu-33 gcc]$
>
> Is this a bug?

This is a minor missing feature, yes.  We ought to implement
-Wmissing-prototypes for C++.

Ian