ELF runtime loader problem

[Greg Thompson]

glibc 2.1.3 as distributed with Redhat 6.2:

i hope this is the correct place to report this.  if not, please direct me 
(or simply this message) to the real right place.

i've found that the runtime linker/loader is calling the initializers in 
shared objects in the wrong order.  rather than walking the dependency graph 
and initializing from the bottom up, it seems to just be calling them in 
whatever order they happen to be in in the objects' elf headers, or 
something.  i'll enclose a test program that demonstrates this.  it will 
abort() if the shared objects are initialized in the incorrect order.  it's 
very important that these be called in the proper order, expecially for C++ 
shared objects that contain static instances that are constructed and 
destructed from within the shared objects' _init and _fini funcs.

i'll also add that FreeBSD suffered from this in the past.  it was fixed in 
r1.47 of src/libexec/rtld-elf/rtld.c.  see:

http://www.freebsd.org/cgi/cvsweb.cgi/src/libexec/rtld-elf/rtld.c

thanks.

greg

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