1 files changed, 48 insertions, 0 deletions
diff --git a/llvm/lib/DebugInfo/PDB/GenericError.cpp b/llvm/lib/DebugInfo/PDB/GenericError.cpp
new file mode 100644
index 000000000000..0e4cba3174b2
--- /dev/null
+++ b/llvm/lib/DebugInfo/PDB/GenericError.cpp
@@ -0,0 +1,48 @@
+//===- Error.cpp - system_error extensions for PDB --------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/DebugInfo/PDB/GenericError.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/ManagedStatic.h"
+
+using namespace llvm;
+using namespace llvm::pdb;
+
+namespace {
+// FIXME: This class is only here to support the transition to llvm::Error. It
+// will be removed once this transition is complete. Clients should prefer to
+// deal with the Error value directly, rather than converting to error_code.
+class PDBErrorCategory : public std::error_category {
+public:
+  const char *name() const noexcept override { return "llvm.pdb"; }
+  std::string message(int Condition) const override {
+    switch (static_cast<pdb_error_code>(Condition)) {
+    case pdb_error_code::unspecified:
+      return "An unknown error has occurred.";
+    case pdb_error_code::dia_sdk_not_present:
+      return "LLVM was not compiled with support for DIA. This usually means "
+             "that you are not using MSVC, or your Visual Studio "
+             "installation is corrupt.";
+    case pdb_error_code::dia_failed_loading:
+      return "DIA is only supported when using MSVC.";
+    case pdb_error_code::invalid_utf8_path:
+      return "The PDB file path is an invalid UTF8 sequence.";
+    case pdb_error_code::signature_out_of_date:
+      return "The signature does not match; the file(s) might be out of date.";
+    case pdb_error_code::no_matching_pch:
+      return "No matching precompiled header could be located.";
+    }
+    llvm_unreachable("Unrecognized generic_error_code");
+  }
+};
+} // namespace
+
+static llvm::ManagedStatic<PDBErrorCategory> PDBCategory;
+const std::error_category &llvm::pdb::PDBErrCategory() { return *PDBCategory; }
+
+char PDBError::ID;