diff --git a/src/bin/jbc2mpl b/src/bin/jbc2mpl
index 9c12512cf7599ef2e2f09ad27d4714f0b829703e..65ce781285bc223cffc2aeb7d0baa494d8974a8a 100755
Binary files a/src/bin/jbc2mpl and b/src/bin/jbc2mpl differ
diff --git a/src/bin/maple b/src/bin/maple
index f8985a17d30724083a2ea8440d000d15d3bf47c5..1af0a5fab1f910352713c650a7e1dd2a6befca63 100755
Binary files a/src/bin/maple and b/src/bin/maple differ
diff --git a/src/bin/mplcg b/src/bin/mplcg
index 8c2e95b17e01ae0e72dacc34349cc22f2df169e3..037f6eb3e1bfe63978ec8e0fe8fcbb8f32aaa50c 100755
Binary files a/src/bin/mplcg and b/src/bin/mplcg differ
diff --git a/src/deplibs/libmempool.a b/src/deplibs/libmempool.a
index 7e5e19554d39f95f8e02746e608052a4aa0fdc2d..13285b2155ba67f1dddf8898f84ea59f4ac864d6 100644
Binary files a/src/deplibs/libmempool.a and b/src/deplibs/libmempool.a differ
diff --git a/src/maple_me/include/me_ir.h b/src/maple_me/include/me_ir.h
index cd9eb370ecf4eda7acd5872c631ac74c20bb7960..9320af4f0c80ed172b0d49f99642befd2f2d987e 100644
--- a/src/maple_me/include/me_ir.h
+++ b/src/maple_me/include/me_ir.h
@@ -224,6 +224,7 @@ class VarMeExpr final : public MeExpr {
   BB *GetDefByBBMeStmt(const Dominance&, MeStmtPtr&);
   bool IsSameVariableValue(const VarMeExpr&) const override;
   VarMeExpr &ResolveVarMeValue();
+  bool PointsToStringLiteral();
 
   const OStIdx &GetOStIdx() const {
     return ostIdx;
diff --git a/src/maple_me/src/irmap.cpp b/src/maple_me/src/irmap.cpp
index 2a021eaeaf00493373df6cf866892fcd8a0dcfdb..75abf71e9ed0a0df73a424251796df140fc971da 100644
--- a/src/maple_me/src/irmap.cpp
+++ b/src/maple_me/src/irmap.cpp
@@ -742,6 +742,7 @@ bool IRMap::ReplaceMeExprStmt(MeStmt &meStmt, MeExpr &meExpr, MeExpr &repexpr) {
         curOpndReplaced = (newBase != oldBase);
       }
       if (curOpndReplaced) {
+        ASSERT_NOT_NULL(newBase);
         ivarStmt.SetLHSVal(BuildLHSIvar(*newBase, ivarStmt, ivarStmt.GetLHSVal()->GetFieldID()));
       }
     } else {
diff --git a/src/maple_me/src/me_ir.cpp b/src/maple_me/src/me_ir.cpp
index 9fba48afb021149bf4ddb2e4826321acbc4cec76..ea045affebe3ccda077a187210a3afead3b75d93 100644
--- a/src/maple_me/src/me_ir.cpp
+++ b/src/maple_me/src/me_ir.cpp
@@ -1287,6 +1287,21 @@ bool VarMeExpr::IsVolatile(const SSATab &ssatab) {
   return structType->IsFieldVolatile(fieldID);
 }
 
+bool VarMeExpr::PointsToStringLiteral() {
+  VarMeExpr &var = ResolveVarMeValue();
+  if (var.GetDefBy() == kDefByMustDef) {
+    MeStmt *baseStmt = var.GetDefMustDef().GetBase();
+    if (baseStmt->GetOp() == OP_callassigned) {
+      auto *call = static_cast<CallMeStmt*>(baseStmt);
+      MIRFunction &callFunc = call->GetTargetFunction();
+      if (callFunc.GetName() == "MCC_GetOrInsertLiteral") {
+        return true;
+      }
+    }
+  }
+  return false;
+}
+
 MeExpr *MeExpr::FindSymAppearance(OStIdx oidx) {
   if (meOp == kMeOpVar) {
     if (static_cast<VarMeExpr*>(this)->GetOStIdx() == oidx) {
@@ -1332,15 +1347,8 @@ bool MeExpr::PointsToSomethingThatNeedsIncRef() {
   }
   if (meOp == kMeOpVar) {
     auto *var = static_cast<VarMeExpr*>(this);
-    if (var->GetDefBy() == kDefByMustDef) {
-      MeStmt *baseStmt = var->GetDefMustDef().GetBase();
-      if (baseStmt->GetOp() == OP_callassigned) {
-        auto *call = static_cast<CallMeStmt*>(baseStmt);
-        MIRFunction &callFunc = call->GetTargetFunction();
-        if (callFunc.GetName() == "MCC_GetOrInsertLiteral") {
-          return false;
-        }
-      }
+    if (var->PointsToStringLiteral()) {
+      return false;
     }
     return true;
   }
diff --git a/src/maple_util/include/name_mangler.h b/src/maple_util/include/name_mangler.h
index 63442dc4db8443f918131531162e902223c97afc..a988b4df4b9333b2dfedfa31a79d4a10cedf84c6 100644
--- a/src/maple_util/include/name_mangler.h
+++ b/src/maple_util/include/name_mangler.h
@@ -105,6 +105,8 @@ static constexpr const char kDecoupleOption[] = "__decouple_option";
 static constexpr const char kDecoupleStr[] = "__decouple";
 static constexpr const char kCompilerVersionNum[] = "__compilerVersionNum";
 static constexpr const char kCompilerVersionNumStr[] = "__compilerVersionNumTab";
+static constexpr const char kCompilerMfileStatus[]  = "__compiler_mfile_status";
+
 static constexpr const char kSourceMuid[] = "__sourceMuid";
 static constexpr const char kSourceMuidSectionStr[] = "__sourceMuidTab";
 
diff --git a/src/mempool/include/maple_string.h b/src/mempool/include/maple_string.h
index 7a1613b8001b67547f496819a5658cce08528bb8..bf95cb54c56bbd3bc3d2f66dbb5d4d6fcd24875c 100644
--- a/src/mempool/include/maple_string.h
+++ b/src/mempool/include/maple_string.h
@@ -240,7 +240,7 @@ class MapleString {
 
   char *data = nullptr;
   MemPool *memPool = nullptr;
-  size_t dataLength = 0;
+  unsigned int dataLength = 0;
 };
 
 // global operators
diff --git a/src/mpl2mpl/src/muid_replacement.cpp b/src/mpl2mpl/src/muid_replacement.cpp
index d3b7ef1ed7cedc46358c0733d6be66b67e746671..5213487c60b02d6ccaab706b720d0883e6c56a76 100644
--- a/src/mpl2mpl/src/muid_replacement.cpp
+++ b/src/mpl2mpl/src/muid_replacement.cpp
@@ -1183,6 +1183,7 @@ void MUIDReplacement::GenerateGlobalRootList() {
   }
 }
 
+// should use a new pass to generate these information
 void MUIDReplacement::GenerateCompilerVersionNum() {
   MIRType *ptrType = GlobalTables::GetTypeTable().GetVoidPtr();
   MIRArrayType &arrayType = *GlobalTables::GetTypeTable().GetOrCreateArrayType(*ptrType, 0);
@@ -1197,6 +1198,7 @@ void MUIDReplacement::GenerateCompilerVersionNum() {
   versionNum->SetKonst(newConst);
 }
 
+
 void MUIDReplacement::GenerateTables() {
   GenerateGlobalRootList();
   CollectFuncAndDataFromKlasses();