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diff src/share/vm/opto/buildOopMap.cpp @ 729:04fa5affa478

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6709742: find_base_for_derived's use of Ideal NULL is unsafe causing crashes during register allocation Summary: Create a mach node corresponding to ideal node ConP #NULL specifically for derived pointers. Reviewed-by: never
author kvn
date Wed, 22 Apr 2009 17:03:18 -0700
parents 98cb887364d3
children acba6af809c8
line wrap: on
line diff
--- a/src/share/vm/opto/buildOopMap.cpp	Wed Apr 22 06:09:24 2009 -0700
+++ b/src/share/vm/opto/buildOopMap.cpp	Wed Apr 22 17:03:18 2009 -0700
@@ -363,6 +363,20 @@
   */
 #endif
 
+#ifdef ASSERT
+  for( OopMapStream oms1(omap, OopMapValue::derived_oop_value); !oms1.is_done(); oms1.next()) {
+    OopMapValue omv1 = oms1.current();
+    bool found = false;
+    for( OopMapStream oms2(omap,OopMapValue::oop_value); !oms2.is_done(); oms2.next()) {
+      if( omv1.content_reg() == oms2.current().reg() ) {
+        found = true;
+        break;
+      }
+    }
+    assert( found, "derived with no base in oopmap" );
+  }
+#endif
+
   return omap;
 }