Deprecate union wait and remove support from wait functions [BZ #19613]

[Florian Weimer]

The overloading approach in the macros was incompatible with integer
expressions of a type different from int.  Applications using union wait
and these macros will have to migrate to the POSIX-specified int
status type.

This commit also removes the transparent union overloads from the
process wait functions.  As a result, application code which uses
union wait will receive compile-time warnings about pointer
compatibility.

This does not have ABI impact.  The functionality was deprecated in BSD
in the early 1990s.  I plan to remove union wait completely in glibc 2.25.

Florian
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 0001-Deprecate-union-wait-and-remove-support-from-wait-fu.patch
Type: text/x-patch
Size: 16045 bytes
Desc: not available
URL: <http://sourceware.org/pipermail/libc-alpha/attachments/20160212/11e9f016/attachment.bin>