Index: lldb/trunk/source/Core/ArchSpec.cpp
===================================================================
--- lldb/trunk/source/Core/ArchSpec.cpp
+++ lldb/trunk/source/Core/ArchSpec.cpp
@@ -972,6 +972,11 @@
                         case llvm::ELF::ELFOSABI_SOLARIS: m_triple.setOS (llvm::Triple::OSType::Solaris); break;
                     }
                 }
+                else if (arch_type == eArchTypeCOFF && os == llvm::Triple::Win32)
+                {
+                    m_triple.setVendor (llvm::Triple::PC);
+                    m_triple.setOS (llvm::Triple::Win32);
+                }
                 else
                 {
                     m_triple.setVendor (llvm::Triple::UnknownVendor);