[src/trunk]: src/doc mention libmalloc hack

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/b8283bd13d91
branches:  trunk
changeset: 815198:b8283bd13d91
user:      christos <christos%NetBSD.org@localhost>
date:      Wed May 04 22:42:40 2016 +0000

description:
mention libmalloc hack

diffstat:

 doc/HACKS |  11 ++++++++++-
 1 files changed, 10 insertions(+), 1 deletions(-)

diffs (25 lines):

diff -r d2a07e53a455 -r b8283bd13d91 doc/HACKS
--- a/doc/HACKS Wed May 04 19:28:32 2016 +0000
+++ b/doc/HACKS Wed May 04 22:42:40 2016 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: HACKS,v 1.165 2016/04/28 21:18:23 mrg Exp $
+# $NetBSD: HACKS,v 1.166 2016/05/04 22:42:40 christos Exp $
 #
 # This file is intended to document workarounds for currently unsolved
 # (mostly) compiler bugs.
@@ -27,6 +27,15 @@
 #
 # this is a comment.
 
+hack   gcc-5.3 optimizes memset+malloc -> calloc inside calloc
+mdate  4 May 2016
+who    christos
+file   external/gpl2/lib/libmalloc/lib/Makefile 1.3 -> 1.5
+descr
+       resulting in infinite recursion; we prevent this with
+       -fno-builtin-malloc
+kcah
+
 hack   netstat ieee1394 address printing.
 mdate  14 Nov 2000
 who    matt