On Wed, Jan 18, 2006 at 11:41:39AM -0600, Perry Smith wrote: > In the course of doing my work last week to get exception handling > working in my device driver, I learned that the exception processing > code calls malloc during the exception. This seems weak to me. It > seems like one of the most critical times to throw an exception is > when malloc fails. > > I did not study the code very much to see what happens if the malloc > fails during the exception processing but I assume its not good. > > It seems like a better approach would be to pre-allocate storage and > use it during the exception handling. The design objective, to me, > would be to make the exception handling as bullet proof as possible. > I understand that it is not known how many exceptions are going to > stack up but I think taking a reasonable guess, pre-allocating that > space, and then fall back to malloc when that space fills up would be > much less likely to fail during a critical time. > > Has this been considered?
It is a major flaw in the gcc exception handling. I'd like to see it get fixed. H.J.
