[LLVMdev] aborting on invalid code

Robert Zeh robert.a.zeh at gmail.com
Mon Oct 13 13:10:47 PDT 2008

On Oct 13, 2008, at 1:07 PM, Chris Lattner wrote:
> Exceptions have a high cost in terms of code size, binary size, and
> even a bit of execution time.  Also, they don't magically make the
> code safe from any error: code has to be designed specifically to use
> RAII and other techniques to handle exceptions properly.  Reading a C+
> + trade magazines/books about EH topics will give you an idea of the
> complexity involved in doing it right.  Further, as I mentioned up-
> thread, turning aborts into exception throws won't save you from null
> pointer or garbage pointer dereferences.

You can catch the null pointer and garbage pointer dereferences with a  
signal handler (in Linux land, at least), and then invoke your direct  
reporting mechanism with that.  Is the concern that some of the other  
LLVM clients don't have signal handling?


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