Re: Fix a few use-after-free issues

[Jeff Law <law at redhat dot com>]

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On 03/23/11 08:25, Jeff Law wrote:
> 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.
Attached is the actual patch that was checked in after another bootstrap
and regression test.



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Attachment: patch
Description: Text document