Very Computer

It seems to me that there is something not quite graceful at least
for the build of gcc 2.95 and 2.96 in redhat 7.3 release. For example,
if I include <math.h>, two problem appears.

(1) compiling code which declares

        double y0;

will give a warning message saying that "y0" shadows some global variable.
A detailed look tells

     extern   double          y0          (double )      ;

appears in the .i file.  Actually j0, j1, y0, y1 all become functions.

(2) a warning message

"  In file included from /usr/include/math.h:350,
                    from electro.c:6:
  /usr/include/bits/mathinline.h: In function `fabsf':
  /usr/include/bits/mathinline.h:446: warning: passing arg 1 of
  `__builtin_fabsf' as `float' rather than `double' due to prototype
"

Would someone tells me how to solve this problem ?

Wei

Quote:

>It seems to me that there is something not quite graceful at least
>for the build of gcc 2.95 and 2.96 in redhat 7.3 release. For example,
>if I include <math.h>, two problem appears.

>(1) compiling code which declares

>    double y0;

>will give a warning message saying that "y0" shadows some global variable.
>A detailed look tells

>     extern   double          y0          (double )      ;

>appears in the .i file.  Actually j0, j1, y0, y1 all become functions.

Further down the man page you will see: "CONFORMING TO SVID 3, BSD 4.3".
Note the absence of ISO/ANSI in the "CONFORMING TO" line.

If you compile your program with "gcc -ansi ....", then the non-ISO
functions will be disabled and the warning message will go away.

Quote:>(2) a warning message

>"  In file included from /usr/include/math.h:350,
>                    from electro.c:6:
>  /usr/include/bits/mathinline.h: In function `fabsf':
>  /usr/include/bits/mathinline.h:446: warning: passing arg 1 of
>  `__builtin_fabsf' as `float' rather than `double' due to prototype
>"

--

Quote:

> >(2) a warning message

> >"  In file included from /usr/include/math.h:350,
> >                    from electro.c:6:
> >  /usr/include/bits/mathinline.h: In function `fabsf':
> >  /usr/include/bits/mathinline.h:446: warning: passing arg 1 of
> >  `__builtin_fabsf' as `float' rather than `double' due to prototype
> >"

> This requires a bit more context to diagnose.

Wei

Quote:>> >"  In file included from /usr/include/math.h:350,
>> >                    from electro.c:6:
>> >  /usr/include/bits/mathinline.h: In function `fabsf':
>> >  /usr/include/bits/mathinline.h:446: warning: passing arg 1 of
>> >  `__builtin_fabsf' as `float' rather than `double' due to prototype
>I don't use fabs, neither fabsf.  Whenever I include math.h,
>it gives the above warning message.

--
bringing you boring signatures for 17 years