tree cff2516f9c02aa637159c0d59b8f3c8361962cd8
parent 8ccf486695447d9c9674a9791ab0ee531bef6741
author Elliott Hughes <enh@google.com> 1572462164 -0700
committer Elliott Hughes <enh@google.com> 1572462164 -0700

qsort.c: take an upstream FreeBSD change.

  r334928 | kib | 2018-06-10 10:54:44 -0700 (Sun, 10 Jun 2018) | 16 lines

  libc qsort(3): stop aliasing.

  Qsort swap code aliases the sorted array elements to ints and longs in
  order to do swap by machine words.  Unfortunately this breaks with the
  full code optimization, e.g. LTO.

  See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83201 which seems to
  reference code directly copied from libc/stdlib/qsort.c.

  PR: 228780
  Reported by:  mliska@suse.cz
  Reviewed by:  brooks
  Sponsored by: The FreeBSD Foundation
  MFC after:  2 weeks
  Differential revision:  https://reviews.freebsd.org/D15714

Test: treehugger
Change-Id: Iac608b13bbf8a2dcb48c935a7871c0d2f05bff79