http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60348
--- Comment #3 from Marc Glisse <glisse at gcc dot gnu.org> ---
man nm:
"U" The symbol is undefined.
"u" The symbol is a unique global symbol. This is a GNU extension
[...]
The program does run fine for me with exactly the same compiler on debian.
How did it fail to run for you, with what error message?
