This is an unofficial snapshot of the ISO/IEC JTC1 SC22 WG21 Core Issues List revision 110b. See http://www.open-std.org/jtc1/sc22/wg21/ for the official list.
[Voted into WP at October, 2009 meeting.]
The current wording unintentionally restricts the use of the thread_local specifier in two contexts: block-scope extern variable declarations and static data members. These restrictions are in conflict with 9.2.2 [dcl.stc] paragraph 1.
Proposed resolution (July, 2009):
Change 9.2.2 [dcl.stc] paragraph 4 as follows:
The thread_local specifier shall be applied only to the names of objects or references of namespace scope
andto the names of objects or references of block scope that also specify static. It specifies that the named object or reference has thread storage duration (22.214.171.124 [basic.stc.thread]).