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8180511: Null pointer dereference in Matcher::ReduceInst()
authorthartmann
Mon, 22 May 2017 09:17:32 +0200
changeset 45242 6106f1ba1a95
parent 45241 dec8c0efd17b
child 45243 a66cea8a8f83
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
hotspot/src/share/vm/opto/matcher.cpp file | annotate | diff | comparison | revisions 
--- a/hotspot/src/share/vm/opto/matcher.cpp	Mon May 22 09:16:46 2017 +0200
+++ b/hotspot/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;
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