------- Comment #2 from gary at intrepid dot com  2006-06-23 16:44 -------
I agree this is definitely an enhancement, but will note the following:

1. On Fedora Core 5, x86_64, I was able to successfully link and run
a null program (written in assembly) that initializes thread local
'ptr' that points to thread local 'data'.  The declarations appear
as follows:
.globl data
        .section        .tbss,"awT",@nobits
        .align 8
        .type   data, @object
        .size   data, 8
data:
        .zero   8
.globl ptr
        .align 8
        .type   ptr, @object
        .size   ptr, 8
ptr:
        .quad   data
I didn't run extensive tests to verify this was doing the right thing, but
there were no complaints from the linker.

2. Given that __thread is an extension, we could choose to interpret
"constancy", as "constant from the perspective of the currently executing
thread" without doing much harm to "C" semantics.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28141

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