Subject: C++ Static Constructors and dlopen()'d Shared Libraries
To: None <>
From: Jay Painter <>
List: tech-toolchain
Date: 03/07/2000 14:49:16
I'm having problems getting static (global) constructors and destructors
to work when I dlopen() a C++ shared library on NetBSD 1.4.1 i386.

When I use the compiler which shipped with NetBSD 1.4.1
(egcs-1.1.1), static constructors work on dlopen(); however, the static
destructors do not get called on dlclose().  Unfortunately, I cannot use
the EGCS compiler, and need to use GCC 2.95.2.  Compiling and linking the
same way, I cannot get the constructors to work at all with this compiler.

I've written a simple test program which shows this behavior.  It can be
found at

Also, I can't get this to work at all on OpenBSD 2.6, if anybody happens
to work on both here...

Jay Painter