Problem report: Struct aliasing problem causes Thread_Ready_Chain corruption in 4.6.99.3

[Till Straumann]

Aaron J. Grier wrote:
> On Thu, Dec 07, 2006 at 05:13:42PM -0800, Till Straumann wrote:
>   
>> Unless you can 'prove' that RTEMS is in compliance with the standard
>> (by carefully revising the source) we should build it with
>> -fno-strict-aliasing.
>>     
>
> I'll ask the obvious question: "does RTEMS wish to be C99 compliant?"
>
> -std=c89
> -std=gnu89
> -std=iso9899:199409
>
> take your pick.  (gnu89 is the default for 3.x)
>
>   
As far as the alias rule goes the standard doesn't seem to matter.
A few simple examples I just tested indicate that gcc uses the
strict alias rule no matter what standard you select.

-- T.