unloading dynamically loaded libraries

["Jagadish Chandra Prasad" <jagadish at icmg dot nu>]

Hi.,

 

  I am using Suse linux 2.214 kernal version

  and 2.95.2 gcc version

 

  I am facing a problem while unloading dynamically loaded libraries.,

 

  I am attaching the example programs and the Makefile.,

  Do a make to get the executable and shared objects libtest1.so libtest2.so

  run the executable loadunload to get the scenario

 

  I am loading two libraries libtest1.so and libtest2.so.,

  If i unload them in reverse order i.e., libtest2.so first and libtest1.so next then there is no problem.,

  but if i unload them in the same order i.e., libtest1.so first and libtest2.so next then dynamic_cast inside unregister method defined in test2 is giving segmentation fault.,

 

  The same scenario is working fine in solaris.,

  I am unable to find out whether its a kernel bug or gcc bug

  The problem might be from dlclose()

 

Please respond on this problem.,

 

Regards.,

Jagadish

 

 

 

 

 

test2.h

Makefile

test.h

test1.cpp

test1.h

test2.cpp

loadunload.cpp