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extend.texi (C++98 Thread-Local Edits): Update with commentary from Mark.

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* doc/extend.texi (C++98 Thread-Local Edits): Update with
        commentary from Mark.

From-SVN: r53807
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Richard Henderson 2002-05-23 14:00:49 -07:00 committed by Richard Henderson
parent e0082a7265
commit 244c2241b8
2 changed files with 13 additions and 5 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2002-05-23 Richard Henderson <rth@redhat.com>
* doc/extend.texi (C++98 Thread-Local Edits): Update with
commentary from Mark.
2002-05-23 Zdenek Dvorak <rakdver@atrey.karlin.mff.cuni.cz>
* bb-reorder.c (make_reorder_chain, make_reorder_chain_1):

13
gcc/doc/extend.texi
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@ -6226,8 +6226,8 @@ When used with @code{extern} or @code{static}, @code{__thread} must appear
immediately after the other storage class specifier.
The @code{__thread} specifier may be applied to any global, file-scoped
static, function-scoped static, or class-scoped static variable. It may
not be applied to block-scoped automatic or class-scoped member variables.
static, function-scoped static, or static data member of a class. It may
not be applied to block-scoped automatic or non-static data member.
When the address-of operator is applied to a thread-local variable, it is
evaluated at run-time and returns the address of the current thread's
@ -6237,8 +6237,9 @@ in that thread become invalid.
No static initialization may refer to the address of a thread-local variable.
In C++, a thread-local variable may not be initialized at runtime,
that is, either by a static constructor or a non-constant expression.
In C++, if an initializer is present for a thread-local variable, it must
be a @var{constant-expression}, as defined in 5.19.2 of the ANSI/ISO C++
standard.
See @uref{http://people.redhat.com/drepper/tls.pdf,
ELF Handling For Thread-Local Storage} for a detailed explanation of
@ -6379,7 +6380,9 @@ dynamic initialization.
Add after paragraph 3
@quotation
An object of thread storage duration shall not require a destructor.
The type of an object with thread storage duration shall not have a
non-trivial destructor, nor shall it be an array type whose elements
(directly or indirectly) have non-trivial destructors.
@end quotation
@item