Note: This paper was among the final papers adopted into draft C++14 yesterday at the Issaquah WA USA ISO C++ meeting.

A new WG21 paper is available. A copy is linked below, and the paper will also appear in the next normal WG21 mailing. If you are not a committee member, please use the comments section below or the std-proposals forum for public discussion.

Document number: N3910

Date: 2014-02-14

What can signal handlers do?

by Hans-J. Boehm

Excerpt:

This is a revision of N3787. It attempts to reflect the remaining comments from CWG discussions in Chicago. It also reflects further in person discussions with Jens Maurer and Clark Nelson at the Issaquah meeting, and subsequent feedback from both SG1 and core. Some of the wording here came directly from Jens.

... in the process of relaxing the restrictions on asynchronous signal handlers to allow use of atomics, we inadvertently made it impossible to use even local variables of non-volatile, non-atomic type.