Submitter: Jens Gustedt
Submission Date:
2012年10月08日
Source:
Reference Document: N/A
Version: 1.0
Date: 2012年10月08日
Subject:no specification for the access to variables with
temporary lifetime
Summary
Section 6.2.4 in p4 and p5 requires implementation defined behavior for accessing objects with thread local or automatic storage from different threads than where they are defined. No such mention is done for objects with temporary lifetime in p8. Can they be accessed by other threads? Is this property handled similar to the property for automatic storage duration? Or should this simply be forbidden?
Suggested Technical Corrigendum
Add to the end of 6.2.4 p8:
The result of attempting to indirectly access an object with temporary lifetime from a thread other than the one with which the object is associated is implementation-defined.
Add to 7.26.1p3:
__STDC_THREAD_TEMPORARY_VISIBLE__ which expands to
1 if objects of temporary lifetime are visible to other threads and
to 0 otherwise.