Re: exceptions (was Re: First stage of Quesa changes now complete)

[James W. W. <ja...@fr...>]

>>    That said, the Quesa source code does not currently contain any
>>explicit throw statements.  Hmm, I see that I did use one new
>>statement without nothrow, I guess I should fix that.  What happens
>>to a try/catch block if exceptions are off?
>
>I don't know -- one would hope it would cause a compile-time error.


So it does.  Well, that throws a monkey wrench in the works.  There 
are some try/catch blocks in GLTextureManager.c.  I could 
conditionalize them, but I don't know a portable way to test whether 
exceptions are turned on.


>>What compilers have a noticeable overhead for exceptions?  I don't
>>think either gcc or CodeWarrior fall into that category.
>
>CodeWarrior does, or at least did several years ago when I last
>looked into it.  It's possible things have changed since then.


There is some size overhead (whether it is "noticeable" is 
subjective), but I don't think there is any speed overhead.  Since 
1996 CodeWarrior has advertised "zero runtime overhead exception 
handling".
-- 
   James W. Walker, ScriptPerfection Enterprises, Inc.
   <http://www.write-brain.com/>