very strange gcc output

[Miroslaw Osys]

Hello everyone!

I am using C for almost 10 years and recently was very surprised.

Under Slackware Linux 8.1 and gcc 2.95.3 I tried to compile program
which simpler version is

----- test.c --------------
#include <termios.h>

int B0;
---------------------------

tried with
gcc -c test.c
and got
test.c:3: parse error before `0000000'

File termios.h seems not to define B0.
Could you explain me this behaviour, please?

Regards
Miroslaw Osys

[Joona I Palaste]

Miroslaw Osys <od**@zeus.polsl.gliwice.pl> scribbled the following:

Hello everyone! I am using C for almost 10 years and recently was very surprised. Under Slackware Linux 8.1 and gcc 2.95.3 I tried to compile program
which simpler version is ----- test.c --------------
#include <termios.h> int B0;
--------------------------- tried with
gcc -c test.c
and got
test.c:3: parse error before `0000000' File termios.h seems not to define B0.
Could you explain me this behaviour, please?

termios.h does not define B0, but bits/termios.h, included indirectly
by termios.h, does. This was found by a very simple grep operation after
a preprocess-only invocation of gcc on your code.

--
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\----------------------------------------- Finland rules! ------------/
"C++. C++ run. Run, ++, run."
- JIPsoft

[Emmanuel Delahaye]

In 'comp.lang.c', Miroslaw Osys <od**@zeus.polsl.gliwice.pl> wrote:

I am using C for almost 10 years and recently was very surprised.

Under Slackware Linux 8.1 and gcc 2.95.3 I tried to compile program
which simpler version is

----- test.c --------------
#include <termios.h>

int B0;
---------------------------

tried with
gcc -c test.c
and got
test.c:3: parse error before `0000000'

File termios.h seems not to define B0.
but some include header could, or B0 could be some gcc build-in extension,
who knows...

Try again with

gcc -c -ansi -pedantic -W -Wall -O3 test.c
Could you explain me this behaviour, please?

<termios.h> is not a standard header. Pedants say that including a non
standard header invokes an undefined behaviour. I'm close to think there are
right.

Please repost to a Linux newsgroup if your concern is <termios.h>.

--
-ed- em**********@noos.fr [remove YOURBRA before answering me]
The C-language FAQ: http://www.eskimo.com/~scs/C-faq/top.html
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[Miroslaw Osys]

Hi again!

Thank for responses. It is a pity I cannot use B0 identifier even as
field name...
Probably solution is to move everything related to termios.h to separate
file.

Regards
Miroslaw Osys

[Emmanuel Delahaye]

In 'comp.lang.c', Miroslaw Osys <od**@zeus.polsl.gliwice.pl> wrote:

Thank for responses. It is a pity I cannot use B0 identifier even as
field name...
Probably solution is to move everything related to termios.h to separate
file.

Absolutely. It's called modular programming, and it's a Good Thing.

--
-ed- em**********@noos.fr [remove YOURBRA before answering me]
The C-language FAQ: http://www.eskimo.com/~scs/C-faq/top.html
<blank line>
FAQ de f.c.l.c : http://www.isty-info.uvsq.fr/~rumeau/fclc/