------- Comment #4 from ubizjak at gmail dot com 2010-05-03 11:50 ------- As shown, these symbols are exported as "u":
`u' The symbol is a unique global symbol. This is a GNU extension to the standard set of ELF symbol bindings. For such a symbol the dynamic linker will make sure that in the entire process there is just one symbol with this name and type in use. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43968