This issue has been automatically converted from the original issue lists and some formatting may not have been preserved.
Authors: WG14, Jens Gustedt
Date: 2012-10-08
Reference document: N1653
Submitted against: C11 / C17
Status: Closed
Converted from: n2396.htm
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?
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.
Comment from WG14 on 2013-10-03:
Oct 2012 meeting
Objects with temporary lifetime are defined in 6.2.4 paragraph 8 to be those with automatic storage duration, and so inter-thread access is implementation defined. No change needed.