This is an unofficial snapshot of the ISO/IEC JTC1 SC22 WG21 Core Issues List revision 116a. See http://www.open-std.org/jtc1/sc22/wg21/ for the official list.

2024-12-19

1578. Value-initialization of aggregates

Section: 9.4  [dcl.init]     Status: NAD     Submitter: Alisdair Meredith     Date: 2012-10-21

The resolution of issue 1301 changed the status of T{}, where T is an aggregate, from being value-initialization to being aggregate initialization. This change breaks the description of DefaultConstructible in 16.4.4.2 [utility.arg.requirements] Table 19. LWG has opened an issue for this (2170) but would like CWG to consider a core approach that would categorize T{} as value initialization, even when T is an aggregate.

Rationale (April, 2013):

There is a distinction in the core language between aggregate initialization and value initialization. For example, a class with a deleted default constructor can be list-initialized via aggregate initialization but not value-initialized.