Steve Kargl <s...@troutmask.apl.washington.edu> writes: > On Thu, Sep 05, 2019 at 07:08:48AM -0700, Steve Kargl wrote: >> On Thu, Sep 05, 2019 at 07:03:25AM -0700, Steve Kargl wrote: >> > On Thu, Sep 05, 2019 at 02:16:08PM +0300, Janne Blomqvist wrote: >> > > On Thu, Sep 5, 2019 at 2:08 PM Nathan Sidwell <nat...@acm.org> wrote: >> > > > >> > > > Is it time to deprecate traditional preprocessing? It's been 30 years >> > > > since C89. Are (non-compiler) tools that use it still things? >> > > > >> > > > Handling it gets its hooks into a bunch of odd places in libcpp. >> > > > >> > > > To be specific: deprecate -traditional-cpp for GCC10, remove in GCC11. >> > > >> > > The Fortran frontend uses traditional mode, for reasons I can't recall >> > > at the moment. >> > > >> > >> > Modern C allows single line comments to start with // >> > >> > program hello >> > print *, "Hello " // "world!" >> > end program >> >> With trunk, >> >> % ~/work/bin/cpp hello.F90 >> # 1 "hello.F90" >> # 1 "<built-in>" >> # 1 "<command-line>" >> # 1 "hello.F90" >> program hello >> print *, "Hello " >> end program >> > > There are 9 open PRs about cpp and Fortran. Of those nine, these > seem to be important for moving to modern cpp. > > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67623 > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56659 > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53934 > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=42954 > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=28662
for the sake of completeness - Modula-2 can also use cpp in traditional mode. I quite like the solution suggested in: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67623 "Fortran devs need to add a Fortran mode to CPP." which could apply to Modula-2 as well regards, Gaius
