From: Sascha Hauer <s.hauer@pengutronix.de>
To: barebox@lists.infradead.org, Ahmad Fatoum <a.fatoum@pengutronix.de>
Subject: Re: [PATCH] malloc: return ZERO_SIZE_PTR for 0-byte allocations
Date: Fri, 14 Mar 2025 17:11:33 +0100 [thread overview]
Message-ID: <174196869365.4120263.12791985060424280026.b4-ty@pengutronix.de> (raw)
In-Reply-To: <20250313085658.13255-1-a.fatoum@pengutronix.de>
On Thu, 13 Mar 2025 09:56:58 +0100, Ahmad Fatoum wrote:
> Linux kmalloc doesn't return NULL on 0-byte allocations, but returns a
> fixed ZERO_PSIZE_PTR constant, which triggers a NULL page exception when
> dereferenced.
>
> However, in barebox, allocator behavior differs:
>
> - glibc returns an unique pointer, but the standard also allows
> libc implementations to return NULL
> - tlsf returns NULL
> - dlmalloc returns a unique pointer
> - dummy malloc returns a unique pointer
>
> [...]
Applied, thanks!
[1/1] malloc: return ZERO_SIZE_PTR for 0-byte allocations
https://git.pengutronix.de/cgit/barebox/commit/?id=3f5b270289be (link may not be stable)
Best regards,
--
Sascha Hauer <s.hauer@pengutronix.de>
prev parent reply other threads:[~2025-03-14 16:17 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-13 8:56 Ahmad Fatoum
2025-03-14 16:11 ` Sascha Hauer [this message]
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