[Skiboot] [PATCH] mambo: Add NULL checks and error messages

[Stewart Smith]

Alastair D'Silva <alastair at au1.ibm.com> writes:
>  <1468210380.4705.10.camel at au1.ibm.com>
> 	 <1468210673.4705.11.camel at au1.ibm.com>
> 	 <ffa2bb95-3584-08b6-511c-1498571c637f at au1.ibm.com>
> Organization: IBM Australia
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Oh look, more of IBM's inability to run a functioning email system
surface out into the public. I'm getting really tired of this.

At some point, we need to draw a line and just ban @XX.ibm.com mail
addresses.


> On Mon, 2016-07-11 at 14:25 +1000, Andrew Donnellan wrote:
>> On 11/07/16 14:17, Alastair D'Silva wrote:
>> > My bad, this is permitted in glibc (not necessarily others).
>> 
>> skiboot, of course, implements its own malloc/free :) See 
>> core/{malloc,mem_region}.c, which (I checked!) define free(NULL) 
>> appropriately.
>> 
>> (curious which other C libraries have different behaviour... POSIX 
>> defines free(NULL) as a no-op.)
>
> I'm fact checking now as to why I though it was necessary - it's
> certainly defined behaviour in C99 & C89.
>
> I suspect I may have absorbed some incorrect information at some point
> :)

I think I did too.. I think it took me 10 years to properly train myself
out of it :)

-- 
Stewart Smith
OPAL Architect, IBM.