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Re: gcc3.4 warnings


From: Eungkyu Song
Subject: Re: gcc3.4 warnings
Date: Mon, 17 Jan 2005 23:47:16 +0900
User-agent: Mutt/1.5.6+20040907i

On Mon, Jan 17, 2005 at 05:16:38PM +0300, Stanislav Ievlev wrote:
> From: Stanislav Ievlev <address@hidden>
> Date: Mon, 17 Jan 2005 17:16:38 +0300
> Subject: Re: gcc3.4 warnings
> To: Thomas Dickey <address@hidden>
> Cc: address@hidden
> List-Id: "Bug reports for ncurses,
>       the GNU implementation of curses" <bug-ncurses.gnu.org>
> X-Bogosity: Ham, tests=bogofilter, spamicity=0.239855, version=0.93.1
> 
> On Sat, Jan 15, 2005 at 01:23:41PM -0500, Thomas Dickey wrote:
> There are a little testcase:
> 
> --
> $ cat l.cc 
> #include <curses.h>
> int main()
> {
> //int wattr_set(WINDOW *win, attr_t attrs, short pair, void *opts);
> 
>         wattr_set(stdscr,0,0, 0); 
> }
> --
> $ gcc -Wall -W -pedantic -c l.cc 
> l.cc: In function `int main()':
> l.cc:6: warning: right-hand operand of comma has no effect
> --
> gcc --version
> i586-alt-linux-gcc (GCC) 3.4.3 20050104 (ALT Linux, build 3.4.3-alt2)
> --

try l.c not l.cc
I have no idea if you are in C++ environment.

$ cat l.c
#include <curses.h>
int main()
{
    wattr_set(stdscr,0,0, 0);
}
$ diff l.c l.cc
$ gcc-3.4 -Wall -std=c99 -W -pedantic -c l.c
$ gcc-3.4 -Wall -std=c++98 -W -pedantic -c l.cc
l.cc: In function `int main()':
l.cc:5: warning: right-hand operand of comma has no effect
$ 

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