Re: why not use setjmp/longjmp within gcc?

[Jim Wilson <wilson at specifix dot com>]

Basile STARYNKEVITCH wrote:
> It is quite standard since a long time, and I don't understand why it should
> be avoided (as some old Changelog suggest).

Which old ChangeLog?  What exactly does it say?  We can't help you if we 
don't know what you are talking about.

There used to be setjmp calls in cse.c and fold-const.c.  This was in 
the FP constant folding code.  We would call setjmp, then install a 
signal handler that called longjmp, in case an FP instruction generated 
a signal, so we could recover gracefully and continue compiling.  But 
nowadays we use software emulated FP for folding operations, even when 
native, so we no longer have to worry about getting FP signals here, and 
the setjmp calls are gone.
--
Jim Wilson, GNU Tools Support, http://www.specifix.com