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From: Shiz <hi@shiz.me>
To: musl@lists.openwall.com
Subject: Re: gethostbyname2.c / 6476b8135760659b25c93ff9308425ca98a9e777 breaking asterisk 13 compatibility
Date: Thu, 24 Aug 2017 14:47:04 +0200	[thread overview]
Message-ID: <B1724849-3441-4BF2-9671-87B694D541BD@shiz.me> (raw)
In-Reply-To: <1503574813.12219.17.camel@wwcom.ch>

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>> Second: I'm currently debugging a strange memory corruption problem
>> and
>> have just had a look at the gethostbyname2.c code:
>> 
>> I was wondering: why is it safe to do free(h) on the initial run when
>> *h has not been
>> 
>>        static struct hostent *h;
>>        size_t size = 63;
>>        struct hostent *res;
>>        int err;
>>        do {
>>                free(h);
>> 
>> Best regards,
>> 
>> Pirmin

h is defined as having static storage, as such its initial
value is NULL. free(NULL) is valid.

- Shiz

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  reply	other threads:[~2017-08-24 12:47 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-08-24 11:39 Pirmin Walthert
2017-08-24 11:40 ` Pirmin Walthert
2017-08-24 12:47   ` Shiz [this message]
2017-08-24 13:02     ` Pirmin Walthert
2017-08-24 12:58 ` Timo Teras
2017-08-24 13:09   ` Pirmin Walthert
2017-08-24 16:17 ` Rich Felker
2017-08-24 16:24   ` Pirmin Walthert

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