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Re: [Qemu-devel] some questions about g_malloc in qemu

From: Max Filippov
Subject: Re: [Qemu-devel] some questions about g_malloc in qemu
Date: Thu, 15 Dec 2011 13:37:13 +0300

>> >>  I found this in HACKING:
>> >>
>> >>   Please note that NULL check for the g_malloc result is redundant and
>> >>   that g_malloc() call with zero size is not allowed.
>> >
>> > So we have:
>> >
>> > 1. You should not request 0 bytes from g_malloc().
>> I think this was related to qemu_malloc() and Anthony's sed run made it
>> refer to g_malloc(), even though it works just fine with 0 bytes. We
>> should probably remove this sentence.
> If you remove it then you can't interpret it the way I did.  It's not
> longer possible to say that g_malloc() never returns NULL.  You always
> have to qualify that with "unless you ask for 0 bytes". :)

I have a number of ELFs that result in ELF loader making zero-size malloc.
Previously I had to enable CONFIG_ZERO_MALLOC, now it just works.

-- Max

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