linux-kernel - Re: [PATCH]kernel.h Fix #warning message web address.

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Date:	Wed, 30 Jun 2010 14:37:05 -0700
From:	"Justin P. Mattock" <justinmattock@...il.com>
To:	Randy Dunlap <rdunlap@...otime.net>
CC:	Jiri Kosina <jkosina@...e.cz>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH]kernel.h Fix #warning message web address.

On 06/30/2010 02:22 PM, Randy Dunlap wrote:
> On Wed, 30 Jun 2010 14:20:42 -0700 Justin P. Mattock wrote:
>
>>
>>> Hehe, ugly. How about making it a single string? GCC preprocessor
>>> documentation suggests the same anyway ...
>>>
>>> 	Neither `#error' nor `#warning' macro-expands its argument.
>>> 	Internal whitespace sequences are each replaced with a single space.
>>> 	The line must consist of complete tokens.  It is wisest to make the
>>> 	argument of these directives be a single string constant; this avoids
>>> 	problems with apostrophes and the like.
>
> Doesn't that mean just put double quotation marks around the entire message string??
>

didnt even notice that. but to answer your question your right. updated 
patch below.

>
>
>> o.k. jiri, here is what I came up with, after re-reading and looking at
>> other in the kernel(below).
>>
>>
>>
>>   From 45f24db45faa06aad01cfc62ff4b475380e5cb11 Mon Sep 17 00:00:00 2001
>> From: Justin P. Mattock<justinmattock@...il.com>
>> Date: Wed, 30 Jun 2010 14:06:18 -0700
>> Subject: [PATCH]kernel.h Fix #warning message according to the GCC
>> preprocessor docs.
>>
>> received this #warning from a simple printk program and noticed the web
>> address is not showing up:
>>    gcc printk.c -o printk
>> In file included from printk.c:3:
>> include/linux/kernel.h:733:2: warning: #warning Attempt to use kernel
>> headers from user space, see http:
>>
>> after the changes the warning should just say:
>> #warning Attempt to use kernel headers from user space!
>>
>>    Signed-off-by: Justin P. Mattock<justinmattock@...il.com>
>> ---
>>    include/linux/kernel.h |    2 +-
>>    1 files changed, 1 insertions(+), 1 deletions(-)
>>
>> diff --git a/include/linux/kernel.h b/include/linux/kernel.h
>> index 8317ec4..b542961 100644
>> --- a/include/linux/kernel.h
>> +++ b/include/linux/kernel.h
>> @@ -730,7 +730,7 @@ extern int do_sysinfo(struct sysinfo *info);
>>
>>    #ifndef __EXPORTED_HEADERS__
>>    #ifndef __KERNEL__
>> -#warning Attempt to use kernel headers from user space, see
>> http://kernelnewbies.org/KernelHeaders
>> +#warning Attempt to use kernel headers from user space!
>>    #endif /* __KERNEL__ */
>>    #endif /* __EXPORTED_HEADERS__ */
>>
>> --
>> 1.7.1.rc1.21.gf3bd6
>>
>>
>> now I'm wondering if there should be a lead to the documentation with
>> this web address(seems grep is not finding anything that I might be able
>> to use).or just leave as is, and let people connect-the-dots!!
>>
>> let me know..
>>
>> Justin P. Mattock
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
>> the body of a message to majordomo@...r.kernel.org
>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>> Please read the FAQ at  http://www.tux.org/lkml/
>
>
> ---
> ~Randy
> *** Remember to use Documentation/SubmitChecklist when testing your code ***
>



 From 5e0b59283521c4b222c1131626e306752cd157f3 Mon Sep 17 00:00:00 2001
From: Justin P. Mattock <justinmattock@...il.com>
Date: Wed, 30 Jun 2010 14:30:22 -0700
Subject: [PATCH]kernel.h Add quotation marks around the message so the 
web address is shown.

Add quotation marks around the message so the web address is shown.
before:
gcc printk.c -o printk
In file included from printk.c:3:
include/linux/kernel.h:733:2: warning: #warning Attempt to use kernel
headers from user space, see http:
after:
gcc printk.c -o printk
In file included from printk.c:3:
warning: #warning "Attempt to use kernel headers from user space,
see http://kernelnewbies.org/KernelHeaders"
  Signed-off-by: Justin P. Mattock <justinmattock@...il.com>

---
  include/linux/kernel.h |    2 +-
  1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 8317ec4..4055858 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -730,7 +730,7 @@ extern int do_sysinfo(struct sysinfo *info);

  #ifndef __EXPORTED_HEADERS__
  #ifndef __KERNEL__
-#warning Attempt to use kernel headers from user space, see 
http://kernelnewbies.org/KernelHeaders
+#warning "Attempt to use kernel headers from user space, see 
http://kernelnewbies.org/KernelHeaders"
  #endif /* __KERNEL__ */
  #endif /* __EXPORTED_HEADERS__ */

-- 
1.6.5.2.180.gc5b3e


of the two whatever works best.

Justin P. Mattock
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