Re: Fix a few use-after-free issues

[Jeff Law <law@redhat.com>]

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On 03/21/11 11:50, Jakub Jelinek wrote:
> On Mon, Mar 21, 2011 at 11:37:16AM -0600, Jeff Law wrote:
>> Similarly for redirect_edge_succ_nodup in this fragment:
>>
>>         ret = redirect_edge_succ_nodup (e, dest);
>>         if (dump_file)
>>   	fprintf (dump_file, "Fallthru edge %i->%i redirected to %i\n",
>>  		 e->src->index, e->dest->index, dest->index);
>>       }
>> Luckily in this case the use-after-free only occurs when dumping, so it
>> won't typically affect end users.
> 
> Well, the message is wrong anyway, becase e->dest->index will be
> dest->index (with the exception that e has been remove_edge, but then it is
> the use after free).  Guess the message should be printed before the
> redirect_edge_succ_nodup call, or remember e->dest->index in some local
> variable and print that variable after the call.
Yea, I'll just move the message before the call to
redirecT_edge_succ_nodup.

jeff
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