From: jamie@shareable.org (Jamie Lokier)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/5] [ARM] implement arch_randomize_brk()
Date: Fri, 18 Jun 2010 13:15:52 +0100 [thread overview]
Message-ID: <20100618121552.GA19044@shareable.org> (raw)
In-Reply-To: <4C1B50AA.9050507@ru.mvista.com>
Sergei Shtylyov wrote:
> >+extern unsigned long arch_randomize_brk(struct mm_struct *mm);
> >+#define arch_randomize_brk arch_randomize_brk
>
> Isn't this an "infinitely recursive" macro?
Not in ISO C. It'll expand to itself and stop. This is a handy trick
for confirming #ifdef tests elsewhere. Glibc does it a lot for enums
defined in header files, for those which applications commonly test
with #ifdef because they were traditionally defined using macros.
-- Jamie
next prev parent reply other threads:[~2010-06-18 12:15 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-16 20:33 [PATCH 0/5] enablement of some security features missing on ARM Nicolas Pitre
2010-06-16 20:33 ` [PATCH 1/5] [ARM] implement arch_randomize_brk() Nicolas Pitre
2010-06-18 10:55 ` Sergei Shtylyov
2010-06-18 12:15 ` Jamie Lokier [this message]
2010-06-16 20:33 ` [PATCH 2/5] [ARM] add address randomization to mmap() Nicolas Pitre
2010-06-16 23:42 ` Kyungmin Park
2010-06-17 0:05 ` Nicolas Pitre
2010-06-17 0:25 ` Kyungmin Park
2010-06-16 20:33 ` [PATCH 3/5] ARM: initial stack protector (-fstack-protector) support Nicolas Pitre
2010-06-16 20:33 ` [PATCH 4/5] ARM: stack protector: change the canary value per task Nicolas Pitre
2010-06-16 20:33 ` [PATCH 5/5] Stack protector: test module Nicolas Pitre
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