LD_PRELOAD behaviour difference in -stable and -current

[leafy]

While upgrading help2man today, I noticed that it won't build on a 
-current machine due to the preloadable gettext library not available.
Extracting from the configure script, it runs:

 LD_PRELOAD="preloadable_libintl.so" sh -c 'echo yes'

This line, returns 'yes' on a -stable system and "/libexec/ld-elf.so.1: 
Shared object "preloadable_libintl.so" not found" on a -current system. 

Is this a correct behaviour?

regards,

Jiawei
-- 
"Without the userland, the kernel is useless."
               --inspired by The Tao of Programming