Re: [Xen-devel] [PATCH] libxc/arm: initialise p2m_size to make gcc happy

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 14.03.18 at 13:35, <andrew.cooper3@xxxxxxxxxx> wrote:
> On 14/03/18 12:32, Wei Liu wrote:
>> Gcc with -O3 failed to spot the loop to initialise p2m_size runs at
>> least once.
> 
> It is -Og in this case, rather than -O3.  My -O3 comment on the thread
> was for the more generic cases.

Yeah, it is likely the fact that gcc does _less_ optimization with -Og
that makes it no longer spot that the variable can't be used
uninitialized.

Jan


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