From: Peter van Dijk <peter.van.dijk@powerdns.com>
Date: Sat, 8 Sep 2018 16:49:42 +0000 (+0200)
Subject: align mthread stacks on 16-byte boundaries
X-Git-Tag: dnsdist-1.3.3~100^2
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=aa1c91d98ee0e12d473c4ed6dbb00586e9fbf6b5;p=thirdparty%2Fpdns.git

align mthread stacks on 16-byte boundaries
---

diff --git a/pdns/mtasker.hh b/pdns/mtasker.hh
index 313d18f290..87bc6723cf 100644
--- a/pdns/mtasker.hh
+++ b/pdns/mtasker.hh
@@ -113,6 +113,9 @@ public:
   MTasker(size_t stacksize=16*8192) : d_tid(0), d_maxtid(0), d_stacksize(stacksize), d_waitstatus(Error)
   {
     initMainStackBounds();
+
+    // make sure our stack is 16-byte aligned to make all the architectures happy
+    d_stacksize = d_stacksize >> 4 << 4;
   }
 
   typedef void tfunc_t(void *); //!< type of the pointer that starts a thread