Re: [Qemu-devel] [PATCH] sparc-dis: Remove redundant NULL check

["Andreas Färber" <afaerber@suse.de>]

Am 03.09.2012 22:23, schrieb Stefan Weil:
> Report from smatch:
> sparc-dis.c:2664 build_hash_table(14) info:
>  redundant null check on hash_buf calling free()
> 
> Signed-off-by: Stefan Weil <sw@weilnetz.de>
> ---
> 
> Coding style was not fixed.
> 
> - sw
> 
>  sparc-dis.c |    3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/sparc-dis.c b/sparc-dis.c
> index cdd337a..ef28835 100644
> --- a/sparc-dis.c
> +++ b/sparc-dis.c
> @@ -2660,8 +2660,7 @@ build_hash_table (const sparc_opcode **opcode_table,
>  
>    memset (hash_table, 0, HASH_SIZE * sizeof (hash_table[0]));
>    memset (hash_count, 0, HASH_SIZE * sizeof (hash_count[0]));
> -  if (hash_buf != NULL)
> -    free (hash_buf);
> +  free (hash_buf);
>    hash_buf = malloc (sizeof (* hash_buf) * num_opcodes);
>    for (i = num_opcodes - 1; i >= 0; --i)
>      {

*-dis sounds like binutils - did upstream drop the if, too?
If not, then diverging for a non-issue does not seem necessary.

Having said that, it's amazing what fixes you come up with. Did you
describe the use of that tool in some posting or in the Wiki?

Regards,
Andreas

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