[patch] prevent tree sinking of trapping stmts

Olivier Hainque hainque@adacore.com
Wed Sep 3 16:04:00 GMT 2014


On Sep 3, 2014, at 15:27 , Richard Biener <richard.guenther@gmail.com> wrote:
> Eventually the FE can still simply set flag_exeptions /
> flag_non_call_exceptions?

> It will still not be correct for all cases
> but at least external throw predicates would work ...

 Yes, these would work. I have always been worried about the
 potential unwanted effects and refrained from getting there
 so far.

 Now, it could well be that there are more or worse unwanted
 effects with not setting them today. The compiler has evolved
 quite a lot since the last time I looked into these.

 I'll re-examine ...

 Thanks again for your constructive feedback,

 Olivier




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