RE: -Wparentheses is less sensitive in g++

RE: -Wparentheses is less sensitive in g++

[lrtaylor]

Dunno about the parentheses, but you should have two ampersands in there
instead of one...

  if (a>0 && b>0)


Thanks,
Lyle

-----Original Message-----
From: gcc-help-owner@gcc.gnu.org [mailto:gcc-help-owner@gcc.gnu.org] On
Behalf Of Frank Mehnert
Sent: Wednesday, January 19, 2005 10:37 AM
To: gcc-help@gcc.gnu.org
Subject: -Wparentheses is less sensitive in g++

Hi,

is there any reason for g++ to be less sensitive when using the
-Wparentheses option than gcc? For example gcc warns about the
following line

  if (a>0 & b>0)
    ...

but g++ does not. Why?

I've checked this with g++2.95, g++-3.2, g++-3.3 and g++-3.4.

Frank
-- 
## Dept. of Computer Science, Dresden University of Technology, Germany
##
## http://os.inf.tu-dresden.de/~fm3
##

Re: -Wparentheses is less sensitive in g++

[Frank Mehnert]

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On Wednesday 19 January 2005 18:38, lrtaylor@micron.com wrote:
> Dunno about the parentheses, but you should have two ampersands in there
> instead of one...
>
>   if (a>0 && b>0)

Yes, that's why I think that g++ should warn about this statement ... :-)

Cheers,

Frank
-- 
## Dept. of Computer Science, Dresden University of Technology, Germany ##
## http://os.inf.tu-dresden.de/~fm3                                     ##

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Re: -Wparentheses is less sensitive in g++

[Frank Mehnert]

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On Wednesday 19 January 2005 18:38, you wrote:
> Dunno about the parentheses, but you should have two ampersands in there
> instead of one...
>
>   if (a>0 && b>0)

To be more precise: I really _want_ that g++ warns me about it when I use
(a>0 & b>0)! g++ seems to be much more sloppy than gcc with warnings. Another
issue is

  char a = 1024;

gcc warns about ``overflow in implicit constant conversion'', g++ does not.
Why?

Is there any way to improve the g++ warning level? I've tried anything
(-Wparentheses, -Wall, -W) but nothing helps. Should I file a bug report?

Frank
-- 
## Dept. of Computer Science, Dresden University of Technology, Germany ##
## http://os.inf.tu-dresden.de/~fm3                                     ##

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Re: -Wparentheses is less sensitive in g++

[Ian Lance Taylor]

Frank Mehnert <fm3@os.inf.tu-dresden.de> writes:

> Is there any way to improve the g++ warning level? I've tried anything
> (-Wparentheses, -Wall, -W) but nothing helps. Should I file a bug report?

Yes, please, at http://gcc.gnu.org/bugzilla/.  Thanks.

Ian

-Wparentheses is less sensitive in g++

[Frank Mehnert]

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Hi,

is there any reason for g++ to be less sensitive when using the
-Wparentheses option than gcc? For example gcc warns about the
following line

  if (a>0 & b>0)
    ...

but g++ does not. Why?

I've checked this with g++2.95, g++-3.2, g++-3.3 and g++-3.4.

Frank
-- 
## Dept. of Computer Science, Dresden University of Technology, Germany ##
## http://os.inf.tu-dresden.de/~fm3                                     ##

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