Watiko wrote:

> This patch confused me.
> 
> + alloc_fail( {countdown}, {when}, {repeat}) 
> 
> + alloc_fail({id}, {countdown}, {repeat})                        
> *alloc_fail()* 
> +                 This is for testing: If the memory allocation with {id} is 
> +                 called, then decrement {countdown}, and when it reaches 
> zero 
> +                 let memory allocation fail {repeat} times.  When {repeat} 
> is 
> +                 smaller than one it fails one time. 
> 
> Two descriptions above looks inconsistent.

Sorry, the first one was for a previous attempt.  When I tried writing a
test with that (counting down number of alloc() calls) it turned out to
be very tricky, so I changed it to the behavior that is now implemented.

It does add a little overhead, passing an ID to the alloc() function,
but it's probably the best solution to test failing memory allocations.

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