[llvm-commits] [llvm] r75567 - /llvm/trunk/lib/VMCore/Instruction.cpp

[Owen Anderson]

On Jul 15, 2009, at 2:07 AM, Eli Friedman wrote:

> On Wed, Jul 15, 2009 at 1:39 AM, Duncan Sands<baldrick at free.fr> wrote:
>>> FreeInst is trapping.
>>
>> Really?
>
> Anything that touches memory is trapping because it'll crash on an
> invalid pointer.

Does free() actually dereference the pointer?  I don't think so, ergo  
no trapping.

It's probably undefined what happens when you free an invalid pointer,  
so we can choose to do whatever we want with it, but I see no  
particular reason to require preserving trapping behavior for it.

--Owen
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