# HG changeset patch
# User thartmann
# Date 1495437452 -7200
# Node ID 1f917785fbe72239c6cc78d76c657ee25a0fcba0
# Parent  0b218e67542917c8e3c7e33ef96eab74c0f7f3ff
8180511: Null pointer dereference in Matcher::ReduceInst()
Summary: Fixed a missing null check on the return value of MachNodeGenerator() found by Parfait.
Reviewed-by: kvn

diff -r 0b218e675429 -r 1f917785fbe7 src/share/vm/opto/matcher.cpp
--- a/src/share/vm/opto/matcher.cpp	Mon May 22 09:16:46 2017 +0200
+++ b/src/share/vm/opto/matcher.cpp	Mon May 22 09:17:32 2017 +0200
@@ -1645,6 +1645,7 @@
 
   // Build the object to represent this state & prepare for recursive calls
   MachNode *mach = s->MachNodeGenerator(rule);
+  guarantee(mach != NULL, "Missing MachNode");
   mach->_opnds[0] = s->MachOperGenerator(_reduceOp[rule]);
   assert( mach->_opnds[0] != NULL, "Missing result operand" );
   Node *leaf = s->_leaf;