diff --git a/src/bin/jbc2mpl b/src/bin/jbc2mpl
index 477ac365d678ee81f9720466d573aeed4a1492ef..f071e5c511b63e3356e24c0a83381256761c3433 100755
Binary files a/src/bin/jbc2mpl and b/src/bin/jbc2mpl differ
diff --git a/src/bin/maple b/src/bin/maple
index 5b67753cf66d8a5c78c780d7e60edde8c0c3feda..7a2379f40f8ac5c860f6825318d908e28962cbd4 100755
Binary files a/src/bin/maple and b/src/bin/maple differ
diff --git a/src/bin/mplcg b/src/bin/mplcg
index 7d24e86ae8d41cd243ad18dc7a3e56269b4c7fab..1496426867c6793ab6da140a280ceec6815fc0cd 100755
Binary files a/src/bin/mplcg and b/src/bin/mplcg differ
diff --git a/src/maple_driver/src/maple_comb_compiler.cpp b/src/maple_driver/src/maple_comb_compiler.cpp
index 7f9120b6d5aea6fd241e97451ae814a0b72c4c4f..8eff1f77eb24432d3681b174296682e9e3dac6a6 100644
--- a/src/maple_driver/src/maple_comb_compiler.cpp
+++ b/src/maple_driver/src/maple_comb_compiler.cpp
@@ -261,4 +261,4 @@ ErrorCode MapleCombCompiler::Compile(const MplOptions &options, MIRModulePtr &th
   memPoolCtrler.DeleteMemPool(optMp);
   return nErr;
 }
-}  // namespace maple
\ No newline at end of file
+}  // namespace maple
diff --git a/src/maple_ir/include/intrinsics.def b/src/maple_ir/include/intrinsics.def
index bf6c0ec63b4c023eeaf688911cae96ed092069b1..50d370087b0466c9ea52cc24803d3722b0b47dd8 100644
--- a/src/maple_ir/include/intrinsics.def
+++ b/src/maple_ir/include/intrinsics.def
@@ -25,12 +25,14 @@ DEF_MIR_INTRINSIC(MPL_GET_VTAB_FUNC,\
                   "MCC_getFuncPtrFromVtab", kIntrnUndef, kArgTyA64, kArgTyDynany, kArgTyDynany, kArgTyUndef, kArgTyUndef, kArgTyUndef, kArgTyUndef)
 DEF_MIR_INTRINSIC(MPL_READ_OVTABLE_ENTRY,\
                   "__mpl_const_offset", INTRNISPURE, kArgTyA32, kArgTyDynany, kArgTyUndef, kArgTyUndef, kArgTyUndef, kArgTyUndef, kArgTyUndef)
+DEF_MIR_INTRINSIC(MPL_READ_OVTABLE_ENTRY2,\
+                  "__mpl_const_offset2", INTRNISPURE, kArgTyA32, kArgTyDynany, kArgTyDynany, kArgTyUndef, kArgTyUndef, kArgTyUndef, kArgTyUndef)
 DEF_MIR_INTRINSIC(MPL_READ_OVTABLE_ENTRY_LAZY,\
                   "__mpl_const_offset_lazy", INTRNNOSIDEEFFECT, kArgTyA32, kArgTyDynany, kArgTyUndef, kArgTyUndef, kArgTyUndef, kArgTyUndef, kArgTyUndef)
 DEF_MIR_INTRINSIC(MPL_READ_OVTABLE_ENTRY_VTAB_LAZY,\
-                  "__mpl_const_offset_vtab_lazy", INTRNISPURE, kArgTyA32, kArgTyDynany, kArgTyDynany, kArgTyUndef, kArgTyUndef, kArgTyUndef, kArgTyUndef)
+                  "__mpl_const_offset_vtab_lazy", INTRNISPURE, kArgTyA32, kArgTyDynany, kArgTyDynany, kArgTyDynany, kArgTyUndef, kArgTyUndef, kArgTyUndef)
 DEF_MIR_INTRINSIC(MPL_READ_OVTABLE_ENTRY_FIELD_LAZY,\
-                  "__mpl_const_offset_field_lazy", INTRNISPURE, kArgTyA32, kArgTyDynany, kArgTyDynany, kArgTyUndef, kArgTyUndef, kArgTyUndef, kArgTyUndef)
+                  "__mpl_const_offset_field_lazy", INTRNISPURE, kArgTyA32, kArgTyDynany, kArgTyDynany, kArgTyDynany, kArgTyUndef, kArgTyUndef, kArgTyUndef)
 DEF_MIR_INTRINSIC(MPL_BOUNDARY_CHECK,\
                   "", INTRNISJAVA | INTRNNOSIDEEFFECT, kArgTyVoid, kArgTyU1, kArgTyUndef, kArgTyUndef, kArgTyUndef, kArgTyUndef, kArgTyUndef)
 
diff --git a/src/maple_me/include/me_ir.h b/src/maple_me/include/me_ir.h
index 9b37cfdedc637d66fb77f93ca57d27e9411172c9..04ec78cb049e3f8dd1c3b2e37beb0f003af2dba9 100644
--- a/src/maple_me/include/me_ir.h
+++ b/src/maple_me/include/me_ir.h
@@ -1061,7 +1061,13 @@ class NaryMeExpr : public MeExpr {
     return opnds;
   }
 
+  void SetOpnds(MapleVector<MeExpr*> &newOpnds) {
+    ASSERT(newOpnds.size() == GetNumOpnds(), "inconsistent operand numbers");
+    opnds = newOpnds;
+  }
+
   void SetOpnd(size_t idx, MeExpr *val) override {
+    ASSERT(idx < opnds.size(), "out of range in NaryMeStmt::GetOpnd");
     opnds[idx] = val;
   }