Hi,

attached is a patch that seems to fix the problem with gcc4 and 64bit
architectures.

The scm_mark_locations function in gc-mark.c calls scm_gc_mark on
everything located in one of the allocated segments. Shouldn't there
be a check if the address is at least scm_t_cell aligned? 

Is it correct or is it just plain luck it works with the patch?

Thanks,

-- 
Miroslav Lichvar