Subject: Re: boehm-gc in dynamic libs
To: None <email@example.com>
From: Mario Kemper <firstname.lastname@example.org>
Date: 12/03/1999 13:42:11
[Posted and mailed]
In article <199912022346.IAA07038@azarin.localnet>,
SUNAGAWA Keiki <email@example.com> writes:
> firstname.lastname@example.org (Mario Kemper) wrote:
> Mario> ./test_cpp 1 2>/dev/null&&echo ok
> Mario> Starting iteration 1
> Mario> The test appears to have succeeded.
> Mario> ok
> well it's ok.
> Mario> But still no luck with oo2c.
> How does it fail? Any error message do you get? Need more
It hangs in an endless loop.
Some background: oo2c is an oberon to c compiler. Oberon is a
programming language by Wirth derived from ModulaII with object
oriented features. It makes heavy use of a garbage collector for
automatic deallocation of data structures.
I can build the system library (io functions and stuff) static. That
works but produces large binaries. Or i compile it using shared
libraries without the gc. This works too, but you run out of memory
fast as nothing gets freed.
The third version - shared lib with gc - hangs most of the time in an
endless loop or fails with a segfault. As the compiler is written in
oberon itself it makes use of the system lib and the gc.
If you're interested, oo2c is available from
The following little test program i sufficent to trigger the problem:
to compile: oo2c --make Test