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Marius Gerbershagen ddb7bb72e9 gc: call finalizer for builtin object only when the object is truly unreachable
Otherwise it can happen that a user-defined finalizer for some object
A storing a builtin object B registers another finalizer for A making
B reachable again while B has already been finalized.

We can't impose an ordering for user-defined finalizers in general
since these may include cyclic references. Therefore it is the duty of
the user to write the finalizers in a consistent way which is
independent of the order in which the finalizers are called. This
doesn't work for builtin objects since the user can't influence
the finalizers in this case.

We also fix a bug which lead to the removal of the standard finalizer
if a user-defined finalizer was registered and then removed.

Co-authored-by: Daniel Kochmański <daniel@turtleware.eu>
2021-06-12 21:26:47 +02:00
contrib bytecmp: preserve the identity for literal objects 2020-12-27 19:04:00 +01:00
examples Fix spelling 2020-09-11 02:11:26 +00:00
msvc msvc: use :X86-64 feature keyword when make a 64bit build 2021-03-24 09:39:03 +08:00
src gc: call finalizer for builtin object only when the object is truly unreachable 2021-06-12 21:26:47 +02:00
.gitignore cmp: read msvc output in using the correct encoding 2020-08-02 10:55:25 +02:00
.gitlab-ci.yml Add .gitlab-ci.yml 2017-01-11 18:30:33 +00:00
appveyor.yml Add simple appveyor msvc build 2017-05-13 00:12:13 +02:00
CHANGELOG 21.2.1 release 2021-01-30 19:27:41 +01:00
configure Preserve quoting when passing the arguments to the build directory 2008-08-27 09:50:44 +02:00
COPYING cosmetic: rename LGPL->COPYING 2016-10-08 14:24:31 +02:00
INSTALL config-internal.h: automatically set ECL_C_COMPATIBLE_VARIADIC_DISPATCH for apple/arm64 2021-01-29 19:46:01 +01:00
LICENSE copyright: add Marius to the maintainer list. 2019-02-22 18:43:37 +00:00
Makefile.in doc: set new doc as standard documentation 2019-01-03 19:14:28 +01:00
README.md update readme (typos) 2015-08-31 08:22:52 +00:00

ECL stands for Embeddable Common-Lisp. The ECL project aims to produce an implementation of the Common-Lisp language which complies to the ANSI X3J13 definition of the language.

The term embeddable refers to the fact that ECL includes a Lisp to C compiler, which produces libraries (static or dynamic) that can be called from C programs. Furthermore, ECL can produce standalone executables from Lisp code and can itself be linked to your programs as a shared library. It also features an interpreter for situations when a C compiler isn't available.

ECL supports the operating systems Linux, FreeBSD, NetBSD, DragonFly BSD, OpenBSD, Solaris (at least v. 9), Microsoft Windows (MSVC, MinGW and Cygwin) and OSX, running on top of the Intel, Sparc, Alpha, ARM and PowerPC processors. Porting to other architectures should be rather easy.