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From: Tomas Winkler <tomasw@gmail.com>
To: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	sparse@vger.kernel.org
Subject: Arrays of variable length
Date: Sun, 5 Mar 2017 11:44:33 +0200	[thread overview]
Message-ID: <CA+i0qc5_NFqb=_6P46yrebrQYzSuCCKgq_xyeui_x6nTRGx62A@mail.gmail.com> (raw)

Sparse complains for arrays declared with variable length

'warning: Variable length array is used'

Prior to c99 this was not allowed but lgcc (c99) doesn't have problem
with that  https://gcc.gnu.org/onlinedocs/gcc/Variable-Length.html.
And also Linux kernel compilation with W=1 doesn't complain.

Since sparse is used extensively would like to ask what is the correct
usage of arrays of variable length
within Linux Kernel.


Thanks
Tomas

             reply	other threads:[~2017-03-05  9:44 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-03-05  9:44 Tomas Winkler [this message]
2017-03-05 10:01 ` Arrays of variable length Al Viro
2017-03-05 14:27 ` Måns Rullgård
2017-03-05 21:12   ` Henrique de Moraes Holschuh
2017-03-05 21:49     ` Richard Weinberger
2017-03-06  0:31     ` Måns Rullgård
2017-03-09  7:54       ` Tomas Winkler
2017-03-09 13:02         ` Måns Rullgård
2017-03-09 13:02           ` Måns Rullgård
2017-03-09 13:40           ` Tomas Winkler
2017-03-09 14:16             ` Måns Rullgård
2017-03-09 14:16               ` Måns Rullgård
2017-03-09 14:21               ` Tomas Winkler
2017-03-09 14:26                 ` Måns Rullgård
2017-03-09 14:26                   ` Måns Rullgård
2017-03-09 14:29                   ` Tomas Winkler
2017-03-09 14:38                     ` Måns Rullgård
2017-03-09 14:38                       ` Måns Rullgård

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