bindexplib: Do not export symbols from managed code

Fixes: #20653

1 files changed, 10 insertions, 2 deletions

diff --git a/Source/bindexplib.cxx b/Source/bindexplib.cxx
index fdfd4c07f5..9125965968 100644
--- a/Source/bindexplib.cxx
+++ b/Source/bindexplib.cxx
@@ -276,8 +276,9 @@ public:
               symbol.compare(0, 4, vectorPrefix)) {
             SectChar = this->SectionHeaders[pSymbolTable->SectionNumber - 1]
                          .Characteristics;
-            // skip symbols containing a dot
-            if (symbol.find('.') == std::string::npos) {
+            // skip symbols containing a dot or are from managed code
+            if (symbol.find('.') == std::string::npos &&
+                !SymbolIsFromManagedCode(symbol)) {
               if (!pSymbolTable->Type && (SectChar & IMAGE_SCN_MEM_WRITE)) {
                 // Read only (i.e. constants) must be excluded
                 this->DataSymbols.insert(symbol);
@@ -302,6 +303,13 @@ public:
   }
 
 private:
+  bool SymbolIsFromManagedCode(std::string const& symbol)
+  {
+    return symbol == "__t2m" || symbol == "__m2mep" || symbol == "__mep" ||
+      symbol.find("$$F") != std::string::npos ||
+      symbol.find("$$J") != std::string::npos;
+  }
+
   std::set<std::string>& Symbols;
   std::set<std::string>& DataSymbols;
   DWORD_PTR SymbolCount;