diff --git a/src/mapleall/maple_ir/src/bin_mpl_export.cpp b/src/mapleall/maple_ir/src/bin_mpl_export.cpp
index 674ab98ce5c89870e93adb8184d276bed39950c8..1dfcaba794fead26e32f82b0a07e9ff243c79ff6 100644
--- a/src/mapleall/maple_ir/src/bin_mpl_export.cpp
+++ b/src/mapleall/maple_ir/src/bin_mpl_export.cpp
@@ -1117,7 +1117,9 @@ void BinaryMplExport::WriteSymField(uint64 contentIdx) {
       MIRSymKind sKind = s->GetSKind();
       if (s->IsDeleted() || storageClass == kScUnused ||
           (s->GetIsImported() && !s->GetAppearsInCode()) ||
-          (sKind == kStFunc && (storageClass == kScExtern || !s->GetAppearsInCode()))) {
+          (sKind == kStFunc && 
+             ((storageClass == kScExtern && !s->GetFunction()->GetAttr(FUNCATTR_used)) || 
+              !s->GetAppearsInCode()))) {
         continue;
       }
       OutputSymbol(s);
diff --git a/src/mapleall/maple_ir/src/mir_symbol.cpp b/src/mapleall/maple_ir/src/mir_symbol.cpp
index 5dd332a64c3d4d168aa0a99416d72381c9fe7acb..e1b9938366bf5912ea953b908bbf54de4f55f614 100644
--- a/src/mapleall/maple_ir/src/mir_symbol.cpp
+++ b/src/mapleall/maple_ir/src/mir_symbol.cpp
@@ -318,7 +318,7 @@ void MIRSymbol::Dump(bool isLocal, int32 indent, bool suppressInit, const MIRSym
   }
   // exclude unused symbols, formal symbols and extern functions
   if (GetStorageClass() == kScUnused || GetStorageClass() == kScFormal ||
-      (GetStorageClass() == kScExtern && sKind == kStFunc)) {
+      (GetStorageClass() == kScExtern && sKind == kStFunc && !GetFunction()->GetAttr(FUNCATTR_used))) {
     return;
   }
   if (GetIsImported() && !GetAppearsInCode()) {