Re: c/6559: "-std=c99 -pedantic" displays c89 warning

Re: c/6559: "-std=c99 -pedantic" displays c89 warning

[Andrew Pinski]

The following reply was made to PR c/6559; it has been noted by GNATS.

From: Andrew Pinski <pinskia@physics.uc.edu>
To: schnetter@uni-tuebingen.de
Cc: gcc-gnats@gcc.gnu.org
Subject: Re: c/6559: "-std=c99 -pedantic" displays c89 warning
Date: Sat, 4 May 2002 15:03:19 -0400

 This is fixed for 3.1 and above
 On Saturday, May 4, 2002, at 01:29 , schnetter@uni-tuebingen.de wrote:
 
 > gcc -std=c99 -pedantic -c c99ped.c
 

Re: c/6559: "-std=c99 -pedantic" displays c89 warning

[rth]

Synopsis: "-std=c99 -pedantic" displays c89 warning

State-Changed-From-To: open->closed
State-Changed-By: rth
State-Changed-When: Thu May 16 22:38:44 2002
State-Changed-Why:
    Duplicate of 3467.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=6559

Re: c/6559: "-std=c99 -pedantic" displays c89 warning

[M. P. Halpin]

The following reply was made to PR c/6559; it has been noted by GNATS.

From: "M. P. Halpin" <mphalpin@cc.gatech.edu>
To: schnetter@uni-tuebingen.de, pinskia@physics.uc.edu
Cc: gcc-gnats@gcc.gnu.org
Subject: Re: c/6559: "-std=c99 -pedantic" displays c89 warning
Date: Fri, 17 May 2002 00:32:53 -0400 (EDT)

   Howdy.  I hate to be a bother, but on gnatsweb it said this was fixed in
 gcc3.1.  I just downloaded and installed the gcc3.1 release on my local
 workstation (FreeBSD 4.5), and it's still giving warnings when I compile
 (I was using "-std=c99 -pedantic -O3 -Wall").  So I grepped the source and
 found this in c-decl.c, starting on line 4620:
 
   if (pedantic)
     {
       if (TREE_CONSTANT (size))
         pedwarn ("ISO C89 forbids array `%s' whose size can't be evaluated",
                  name);
       else
         pedwarn ("ISO C89 forbids variable-size array `%s'",
                  name);
     }
 
   Changing "if (pedantic)" to "if (pedantic && !flag_isoc99)" seemed to
 fix the problem.
 

c/6559: "-std=c99 -pedantic" displays c89 warning

[schnetter]

>Number:         6559
>Category:       c
>Synopsis:       "-std=c99 -pedantic" displays c89 warning
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat May 04 10:36:00 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     Erik Schnetter
>Release:        3.0.4
>Organization:
>Environment:
SuSE Linux 7.3
>Description:
I have a function using a variable sized array.  This function is legal in C99, but not legal in C89.  When I compile with

~/gcc/bin/gcc -std=c99 -pedantic -c c99ped.c

then I receive the warning

c99ped.c: In function `c99ped':
c99ped.c:3: warning: ISO C89 forbids variable-size array `x'

I think that this warning should not be there, because I explicitely selected the C99 standard.  In this case, I want -pedantic to warn only about violations of the C99 standard.



My source code is the four lines of

void c99ped (int dim)
{
  double (* x)[dim];
}

$ ~/gcc/bin/gcc --version
3.0.4
>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: