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: N3972

Date: 2014-05-17

Source-Code Information Capture

by Robert Douglas

Excerpt:

In Issaquah, I presented the idea of "Call-Site Informed Default Variables" to the reflection study group, to get a sense of what direction to pursue. The goal was to craft a feature to allow a function to capture information about the source code calling it, moving toward obsoleting function-macros for these use cases. The response from the room was largely positive, and requests were focused on the desire to present a means to convey source code information to be passed to a function. This proposal seeks to do just that.