From: Thomas Koenig <tkoenig@netcologne.de>
To: gcc mailing list <gcc@gcc.gnu.org>,
"fortran@gcc.gnu.org" <fortran@gcc.gnu.org>
Subject: Function pointers to a nested function / contained procedure
Date: Tue, 26 Mar 2019 21:55:00 -0000 [thread overview]
Message-ID: <1130b0c3-6955-7eb7-c31b-75324427e08c@netcologne.de> (raw)
Hello world,
Fortran allows pointers to contained procedures (other languages
might call this nested functions), and also allows them to be
called using procedure pointers (function pointers in C). This is
permitted as long as the host instance is still active (the parent
function is still running).
Contained procedures can access variables in their host instance.
gfortran currently allows procedure pointers to contained procedures,
but the association of variables in the host instance fails (PR 85537),
so accessing such a variable (usually) results in a segfault.
At the moment, I am at a loss of how to try to fix this. Any ideas?
Is there any other language which has such a feature, so a bit of
judicious copy & paste could be applied?
Regards
Thomas
next reply other threads:[~2019-03-26 21:55 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-26 21:55 Thomas Koenig [this message]
2019-03-26 22:25 ` Eric Botcazou
2019-03-27 7:48 Thomas König
2019-03-27 9:02 ` Richard Biener
2019-03-27 9:09 ` Jakub Jelinek
2019-03-27 9:26 ` Richard Biener
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