1 files changed, 6 insertions, 0 deletions
diff --git a/lib/CodeGen/Mangle.cpp b/lib/CodeGen/Mangle.cpp
index 639d719b79..ff2388e798 100644
--- a/lib/CodeGen/Mangle.cpp
+++ b/lib/CodeGen/Mangle.cpp
@@ -1149,6 +1149,12 @@ bool CXXNameMangler::mangleStandardSubstitution(const NamedDecl *ND) {
       Out << "Sa";
       return true;
     }
+    
+    // <<substitution> ::= Sb # ::std::basic_string
+    if (TD->getIdentifier()->isStr("basic_string")) {
+      Out << "Sb";
+      return true;
+    }
   }
   
   return false;