[pypy-dev] Catching MemoryError in RPython

[holger krekel]

Hi Armin, 

On Sat, Feb 23, 2008 at 13:44 +0100, Armin Rigo wrote:
> On Fri, Feb 22, 2008 at 07:54:52PM +0100, Niko Matsakis wrote:
> > I cannot seem to generate code that catches OOM errors in RPython.
> 
> A known issue: the flow space doesn't consider that almost any operation
> could raise MemoryError, and thus the except clause is never seen by it.
> The same issue applies to try:finally:.
> 
> The workaround is to use a function call:
> 
>     def fn():
>         try:
>             do_stuff()
>         except MemoryError:
>             return True
>         else:
>             return False
> 
>     def do_stuff():
>         ...

the "range" and "lst.append" in Niko's example are not 
considered to be function calls?  Is it (also) the explicit 
catching of MemoryError here that is important? 

holger