Re: 2.6.21-rc7-mm1 on test.kernel.org

[Christoph Lameter <clameter@sgi.com>]

On Tue, 24 Apr 2007, Badari Pulavarty wrote:

> static inline struct kmem_cache *kmalloc_slab(size_t size)
> {
>         int index = kmalloc_index(size);
> 
>         if (index == 0)
>                 return NULL;
> 
>         if (index < 0) {
>                 /*
>                  * Generate a link failure. Would be great if we could
>                  * do something to stop the compile here.
>                  */
>                 extern void __kmalloc_size_too_large(void);
>                 __kmalloc_size_too_large();
>         }
>         return &kmalloc_caches[index];
> }
> 
> hmm.. 
> 
> gcc version 3.3.3 -- generates those link failures
> gcc version 4.1.0 -- doesn't generate this error

Likely an issue with constant folding.

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