SC22/WG14/N759
Changes adopted by WG14

Minor issue with Compound Literals
==================================
Clive Feather
clive@demon.net
1997-09-18


Note
====

It was decided that independent changes to 6.1.2.4 had resolved the basic
issue.


Proposal
========

Add a new example to Compound Literals (currently 6.3.2.6):

    Example:

    Each compound literal creates only a single object in a given scope:

        struct s { int i; };

        int f (void)
        {
            struct s *p = 0, *q;
            int j;

            for (j = 0; j < 2; j++)
                q = p, p = &((struct s){ j });
            return p == q && q.i == 1;
        }

    The function f() always returns the value 1.

    Note that if the body of the for loop were enclosed in braces, the
    lifetime of the unnamed object would be the body of the loop only, and
    on entry next time round p would be pointing to an object which is no
    longer guaranteed to exist, which is undefined behaviour.