------- Comment #6 from dfranke at gcc dot gnu dot org 2007-05-29 18:13 -------
I am currently looking at the implementation of signal, so adding this may be
not too much effort. Some questions/remarks:
> The third argument "flag" is an integer that plays the role of SIG_DFL
> in the C library version of signal(). [...] for example, it says that
> when flag=-1, control is passed to the user's signal handler function
> "ctrlco" when signal number "signum" is encountered. If flag=0, the
> user's signal handler function is ignored and the default action is
> taken instead.
(1) There is no 3-argument version of signal(2) in glibc-2.[56]?!
(2) You are aware of the differnt ways to invoke the SIGNAL function? You can
_either_ set a handler function or use handler=1 (SIG_IGN) or handler=0
(SIG_DFL):
INTEGER, PARAMETER :: SIG_DFL = 0, SIG_IGN = 1
status = signal(number, handler) ! install a signal handler
status = signal(number, SIG_DFL) ! restore default handler
status = signal(number, SIG_IGN) ! ignore signal
This won't compile your code out of the box, but gives the functionality you
are asking for (as I understand it). Introducing a third argument seems to be
redundant.
FX, you confirmed this enhancement: is do-as-the-others-do really good enough a
reason to implement this?
--
dfranke at gcc dot gnu dot org changed:
What |Removed |Added
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CC| |dfranke at gcc dot gnu dot
| |org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29240
