Aliasing patch for tree-optimization/28778

Mark Mitchell
Sat Aug 26 18:30:00 GMT 2006

Daniel Jacobowitz wrote:
> On Sat, Aug 26, 2006 at 01:54:09PM -0400, Daniel Berlin wrote:
>> Unfortunately, this is going to be a mild pain in the ass to fix, and
>> require some escaping rewrite.
>> I'll take care of it, but it might be better to put off till 4.3
> I'll let release-y people sort it out, but given the bug, that seems
> like a bad idea to me.

I think this is exactly the sort of issue that should be fixed for 4.2. 
  There's nothing particularly weird about this code, it doesn't use any 
GNU extensions, it looks to have come from real-world code, and it 
affects multiple common targets.  So, I think the P1 marker is reasonable.

A conservative fix is certainly worth considering; if we can't get exact 
information, falling back to less-exact information might be an 
acceptable intermediate state.

Mark Mitchell
(650) 331-3385 x713

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