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Document the fact that passing in a count of zero to the bus_space functions

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will result in undefined behaviour.
Taken from NetBSD's bus_space(9).
This commit is contained in:
Rebecca Cran 2010-12-03 18:30:55 +00:00
parent e2326639c2
commit 01688065e7
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=216156
1 changed files with 3 additions and 0 deletions
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3
share/man/man9/bus_space.9
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@ -719,6 +719,9 @@ or which return data read from bus space (i.e., functions which
do not obviously return an error code) do not fail. do not obviously return an error code) do not fail.
They could only fail They could only fail
if given invalid arguments, and in that case their behaviour is undefined. if given invalid arguments, and in that case their behaviour is undefined.
Functions which take a count of bytes have undefined results if the specified
.Fa count
is zero.
.Sh TYPES .Sh TYPES
Several types are defined in Several types are defined in
.In machine/bus.h .In machine/bus.h