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From: Andreas Schwab <schwab@suse.de>
To: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Cc: libc-alpha@sourceware.org
Subject: Re: [PATCH] Fix undefined behaviour inconsistent for strtok
References: <1477393113-3845-1-git-send-email-adhemerval.zanella@linaro.org>
	<mvmy41ck6lu.fsf@hawking.suse.de>
	<385e684a-8101-fd26-d2ff-464515a2e88c@linaro.org>
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Date: Tue, 25 Oct 2016 12:57:00 -0000
In-Reply-To: <385e684a-8101-fd26-d2ff-464515a2e88c@linaro.org> (Adhemerval
	Zanella's message of "Tue, 25 Oct 2016 10:33:15 -0200")
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On Okt 25 2016, Adhemerval Zanella <adhemerval.zanella@linaro.org> wrote:

> On 25/10/2016 09:31, Andreas Schwab wrote:
>> On Okt 25 2016, Adhemerval Zanella <adhemerval.zanella@linaro.org> wrote:
>> 
>>> 	* string/strtok.c (strtok): Return null is previous input is also
>> 
>> s/is/if/
>> 
>>> diff --git a/string/strtok.c b/string/strtok.c
>>> index 7a4574d..5c4b309 100644
>>> --- a/string/strtok.c
>>> +++ b/string/strtok.c
>>> @@ -40,8 +40,8 @@ STRTOK (char *s, const char *delim)
>>>  {
>>>    char *token;
>>>  
>>> -  if (s == NULL)
>>> -    s = olds;
>>> +  if ((s == NULL) && ((s = olds) == NULL))
>> 
>> Please avoid assignment in an expression.  And the parens are redundant.
>> 
>> Andreas.
>> 
>
> Right, with these fixes would it be acceptable?

I don't see much point in supporting invalid use of strtok.

Andreas.

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
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"And now for something completely different."