[U-Boot-Users] [UPDATED][PATCH v2] Fix compile warnings in dlmalloc

[Wolfgang Denk]

In message <Pine.LNX.4.64.0807300800510.31191 at blarg.am.freescale.net> you wrote:
> The origional code was using on odd reference to get to the first
> real element in av_[].  The first two elements of the array are
> not used for actual bins, but for house keeping.  If we are more
> explicit about how use the first few elements we can get rid of the
> warnings:
> 
> dlmalloc.c: In function 'malloc_extend_top':
> dlmalloc.c:1971: warning: dereferencing type-punned pointer will break strict-aliasing rules
> dlmalloc.c:1999: warning: dereferencing type-punned pointer will break strict-aliasing rules
> dlmalloc.c:2029: warning: dereferencing type-punned pointer will break strict-aliasing rules
...
> 
> The logic of how this code came to be is:
> 	bin_at(0) = (char*)&(av_[2]) - 2*SIZE_SZ
> 
> SIZE_SZ is the size of pointer, and av_ is arry of pointers so:
> 	bin_at(0) = &(av_[0])
> 
> Going from there to bin_at(0)->fd or bin_at(0)->size should be straight forward.
> 
> Signed-off-by: Kumar Gala <galak at kernel.crashing.org>
> ---
> 
> Updated against lastest head, added a bit more commit info about the logic
> of the change.
> 
>  common/dlmalloc.c |   21 +++++++++++----------
>  1 files changed, 11 insertions(+), 10 deletions(-)

Applied, thanks.



Best regards,

Wolfgang Denk

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