Re: maintainer-check fallout: C++ and type checks

[Paul Eggert]

Ralf Wildenhues <address@hidden> writes:

> (actually, rcs-5.7 is >10 years old; its Changelog suggests this code
> to be 15.  amazed..)

I wrote that code many years ago, as part of RCS's 'configure'
procedure, before Autoconf even existed.

>       * lib/autoconf/c.m4 (AC_PROG_CC_STDC): If we cannot enable C99
>       nor C89 mode, set `$ac_cv_prog_cc_stdc' to `no' instead of
>       trying to execute the command `no'.

>       * lib/autoconf/c.m4 (AC_C_TYPEOF): Use typedef to avoid defining
>       a structure inside a cast, for C++ conformance.
>       * lib/autoconf/types.m4 (AC_CHECK_ALIGNOF): Likewise.
>       Also fix quoting error in `AC_MSG_FAILURE' arguments.
>
>
>       * lib/autoconf/types.m4 (_AC_CHECK_TYPE_NEW): Use a typedef to
>       allow to pass unnamed structs even in C++.
>       (AC_CHECK_SIZEOF):  Likewise.
>       Also fix quoting error in `AC_MSG_FAILURE' arguments.
>       * tests/semantics.at (AC_CHECK_ALIGNOF struct, AC_CHECK_SIZEOF
>       struct): New tests for unnamed structs, each both native and
>       cross-compiling.

These changes all look good; please install.  And thanks again.