[DebugInfo] Common behavior for error types

Following D50807, and heading towards D50664, this intermediary change does the following:

1. Upgrade all custom Error types in llvm/trunk/lib/DebugInfo/ to use the new StringError behavior (D50807).
2. Implement std::is_error_code_enum and make_error_code() for DebugInfo error enumerations.
3. Rename GenericError -> PDBError (the file will be renamed in a subsequent commit)
4. Update custom error messages to follow the same formatting: (\w\s*)+\.
5. Keep generic "file not found" (ENOENT) errors as they are in PDB code. Previously, there used to be a custom enumeration for that purpose.
6. Remove a few extraneous LF in log() implementations. Printing LF is a responsability at a higher level, not at the error level.

Differential Revision: https://reviews.llvm.org/D51499

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@341228 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/DebugInfo/CodeView/CodeViewError.h

@@ -24,23 +24,32 @@ enum class cv_error_code {
   no_records,
   unknown_member_record,
 };
+} // namespace codeview
+} // namespace llvm
+
+namespace std {
+template <>
+struct is_error_code_enum<llvm::codeview::cv_error_code> : std::true_type {};
+} // namespace std
+
+namespace llvm {
+namespace codeview {
+const std::error_category &CVErrorCategory();
+
+inline std::error_code make_error_code(cv_error_code E) {
+  return std::error_code(static_cast<int>(E), CVErrorCategory());
+}
 
 /// Base class for errors originating when parsing raw PDB files
-class CodeViewError : public ErrorInfo<CodeViewError> {
+class CodeViewError : public ErrorInfo<CodeViewError, StringError> {
 public:
+  using ErrorInfo<CodeViewError,
+                  StringError>::ErrorInfo; // inherit constructors
+  CodeViewError(const Twine &S) : ErrorInfo(S, cv_error_code::unspecified) {}
   static char ID;
-  CodeViewError(cv_error_code C);
-  CodeViewError(const std::string &Context);
-  CodeViewError(cv_error_code C, const std::string &Context);
-
-  void log(raw_ostream &OS) const override;
-  const std::string &getErrorMessage() const;
-  std::error_code convertToErrorCode() const override;
-
-private:
-  std::string ErrMsg;
-  cv_error_code Code;
 };
-}
-}
+
+} // namespace codeview
+} // namespace llvm
+
 #endif

include/llvm/DebugInfo/MSF/MSFError.h

@@ -24,22 +24,28 @@ enum class msf_error_code {
   invalid_format,
   block_in_use
 };
+} // namespace msf
+} // namespace llvm
+
+namespace std {
+template <>
+struct is_error_code_enum<llvm::msf::msf_error_code> : std::true_type {};
+} // namespace std
+
+namespace llvm {
+namespace msf {
+const std::error_category &MSFErrCategory();
+
+inline std::error_code make_error_code(msf_error_code E) {
+  return std::error_code(static_cast<int>(E), MSFErrCategory());
+}
 
 /// Base class for errors originating when parsing raw PDB files
-class MSFError : public ErrorInfo<MSFError> {
+class MSFError : public ErrorInfo<MSFError, StringError> {
 public:
+  using ErrorInfo<MSFError, StringError>::ErrorInfo; // inherit constructors
+  MSFError(const Twine &S) : ErrorInfo(S, msf_error_code::unspecified) {}
   static char ID;
-  MSFError(msf_error_code C);
-  MSFError(const std::string &Context);
-  MSFError(msf_error_code C, const std::string &Context);
-
-  void log(raw_ostream &OS) const override;
-  const std::string &getErrorMessage() const;
-  std::error_code convertToErrorCode() const override;
-
-private:
-  std::string ErrMsg;
-  msf_error_code Code;
 };
 } // namespace msf
 } // namespace llvm

include/llvm/DebugInfo/PDB/DIA/DIAError.h

@@ -23,23 +23,29 @@ enum class dia_error_code {
   already_loaded,
   debug_info_mismatch,
 };
+} // namespace pdb
+} // namespace llvm
+
+namespace std {
+template <>
+struct is_error_code_enum<llvm::pdb::dia_error_code> : std::true_type {};
+} // namespace std
+
+namespace llvm {
+namespace pdb {
+const std::error_category &DIAErrCategory();
+
+inline std::error_code make_error_code(dia_error_code E) {
+  return std::error_code(static_cast<int>(E), DIAErrCategory());
+}
 
 /// Base class for errors originating in DIA SDK, e.g. COM calls
-class DIAError : public ErrorInfo<DIAError> {
+class DIAError : public ErrorInfo<DIAError, StringError> {
 public:
+  using ErrorInfo<DIAError, StringError>::ErrorInfo;
+  DIAError(const Twine &S) : ErrorInfo(S, dia_error_code::unspecified) {}
   static char ID;
-  DIAError(dia_error_code C);
-  DIAError(StringRef Context);
-  DIAError(dia_error_code C, StringRef Context);
-
-  void log(raw_ostream &OS) const override;
-  StringRef getErrorMessage() const;
-  std::error_code convertToErrorCode() const override;
-
-private:
-  std::string ErrMsg;
-  dia_error_code Code;
 };
-}
-}
+} // namespace pdb
+} // namespace llvm
 #endif

include/llvm/DebugInfo/PDB/GenericError.h

@@ -16,29 +16,37 @@
 namespace llvm {
 namespace pdb {
 
-enum class generic_error_code {
-  invalid_path = 1,
+enum class pdb_error_code {
+  invalid_utf8_path = 1,
   dia_sdk_not_present,
+  dia_failed_loading,
+  signature_out_of_date,
   type_server_not_found,
   unspecified,
 };
+} // namespace codeview
+} // namespace llvm
+
+namespace std {
+    template <>
+    struct is_error_code_enum<llvm::pdb::pdb_error_code> : std::true_type {};
+} // namespace std
+
+namespace llvm {
+namespace pdb {
+    const std::error_category &PDBErrCategory();
+
+    inline std::error_code make_error_code(pdb_error_code E) {
+        return std::error_code(static_cast<int>(E), PDBErrCategory());
+    }
 
 /// Base class for errors originating when parsing raw PDB files
-class GenericError : public ErrorInfo<GenericError> {
+class PDBError : public ErrorInfo<PDBError, StringError> {
 public:
+  using ErrorInfo<PDBError, StringError>::ErrorInfo; // inherit constructors
+  PDBError(const Twine &S) : ErrorInfo(S, pdb_error_code::unspecified) {}
   static char ID;
-  GenericError(generic_error_code C);
-  GenericError(StringRef Context);
-  GenericError(generic_error_code C, StringRef Context);
-
-  void log(raw_ostream &OS) const override;
-  StringRef getErrorMessage() const;
-  std::error_code convertToErrorCode() const override;
-
-private:
-  std::string ErrMsg;
-  generic_error_code Code;
 };
-}
-}
+} // namespace pdb
+} // namespace llvm
 #endif

include/llvm/DebugInfo/PDB/Native/RawError.h

@@ -31,23 +31,29 @@ enum class raw_error_code {
   stream_too_long,
   invalid_tpi_hash,
 };
+} // namespace pdb
+} // namespace llvm
+
+namespace std {
+template <>
+struct is_error_code_enum<llvm::pdb::raw_error_code> : std::true_type {};
+} // namespace std
+
+namespace llvm {
+namespace pdb {
+const std::error_category &RawErrCategory();
+
+inline std::error_code make_error_code(raw_error_code E) {
+  return std::error_code(static_cast<int>(E), RawErrCategory());
+}
 
 /// Base class for errors originating when parsing raw PDB files
-class RawError : public ErrorInfo<RawError> {
+class RawError : public ErrorInfo<RawError, StringError> {
 public:
+  using ErrorInfo<RawError, StringError>::ErrorInfo; // inherit constructors
+  RawError(const Twine &S) : ErrorInfo(S, raw_error_code::unspecified) {}
   static char ID;
-  RawError(raw_error_code C);
-  RawError(const std::string &Context);
-  RawError(raw_error_code C, const std::string &Context);
-
-  void log(raw_ostream &OS) const override;
-  const std::string &getErrorMessage() const;
-  std::error_code convertToErrorCode() const override;
-
-private:
-  std::string ErrMsg;
-  raw_error_code Code;
 };
-}
-}
+} // namespace pdb
+} // namespace llvm
 #endif

lib/DebugInfo/CodeView/CodeViewError.cpp

@@ -14,25 +14,23 @@
 using namespace llvm;
 using namespace llvm::codeview;
 
-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 CodeViewErrorCategory : public std::error_category {
 public:
   const char *name() const noexcept override { return "llvm.codeview"; }
-
   std::string message(int Condition) const override {
     switch (static_cast<cv_error_code>(Condition)) {
     case cv_error_code::unspecified:
-      return "An unknown error has occurred.";
+      return "An unknown CodeView error has occurred.";
     case cv_error_code::insufficient_buffer:
       return "The buffer is not large enough to read the requested number of "
              "bytes.";
     case cv_error_code::corrupt_record:
       return "The CodeView record is corrupted.";
     case cv_error_code::no_records:
-      return "There are no records";
+      return "There are no records.";
     case cv_error_code::operation_unsupported:
       return "The requested operation is not supported.";
     case cv_error_code::unknown_member_record:
@@ -41,31 +39,8 @@ public:
     llvm_unreachable("Unrecognized cv_error_code");
   }
 };
-} // end anonymous namespace
 
-static ManagedStatic<CodeViewErrorCategory> Category;
+static llvm::ManagedStatic<CodeViewErrorCategory> CodeViewErrCategory;
+const std::error_category &llvm::codeview::CVErrorCategory() { return *CodeViewErrCategory; }
 
-char CodeViewError::ID = 0;
-
-CodeViewError::CodeViewError(cv_error_code C) : CodeViewError(C, "") {}
-
-CodeViewError::CodeViewError(const std::string &Context)
-    : CodeViewError(cv_error_code::unspecified, Context) {}
-
-CodeViewError::CodeViewError(cv_error_code C, const std::string &Context)
-    : Code(C) {
-  ErrMsg = "CodeView Error: ";
-  std::error_code EC = convertToErrorCode();
-  if (Code != cv_error_code::unspecified)
-    ErrMsg += EC.message() + "  ";
-  if (!Context.empty())
-    ErrMsg += Context;
-}
-
-void CodeViewError::log(raw_ostream &OS) const { OS << ErrMsg << "\n"; }
-
-const std::string &CodeViewError::getErrorMessage() const { return ErrMsg; }
-
-std::error_code CodeViewError::convertToErrorCode() const {
-  return std::error_code(static_cast<int>(Code), *Category);
-}
+char CodeViewError::ID;

lib/DebugInfo/CodeView/TypeStreamMerger.cpp

@@ -326,7 +326,7 @@ Error TypeStreamMerger::doit(const CVTypeArray &Types) {
            "second pass found more bad indices");
     if (!LastError && NumBadIndices == BadIndicesRemaining) {
       return llvm::make_error<CodeViewError>(
-          cv_error_code::corrupt_record, "input type graph contains cycles");
+          cv_error_code::corrupt_record, "Input type graph contains cycles");
     }
   }
 

lib/DebugInfo/MSF/MSFError.cpp

@@ -14,14 +14,12 @@
 using namespace llvm;
 using namespace llvm::msf;
 
-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 MSFErrorCategory : public std::error_category {
 public:
   const char *name() const noexcept override { return "llvm.msf"; }
-
   std::string message(int Condition) const override {
     switch (static_cast<msf_error_code>(Condition)) {
     case msf_error_code::unspecified:
@@ -41,30 +39,8 @@ public:
     llvm_unreachable("Unrecognized msf_error_code");
   }
 };
-} // end anonymous namespace
 
-static ManagedStatic<MSFErrorCategory> Category;
+static llvm::ManagedStatic<MSFErrorCategory> MSFCategory;
+const std::error_category &llvm::msf::MSFErrCategory() { return *MSFCategory; }
 
-char MSFError::ID = 0;
-
-MSFError::MSFError(msf_error_code C) : MSFError(C, "") {}
-
-MSFError::MSFError(const std::string &Context)
-    : MSFError(msf_error_code::unspecified, Context) {}
-
-MSFError::MSFError(msf_error_code C, const std::string &Context) : Code(C) {
-  ErrMsg = "MSF Error: ";
-  std::error_code EC = convertToErrorCode();
-  if (Code != msf_error_code::unspecified)
-    ErrMsg += EC.message() + "  ";
-  if (!Context.empty())
-    ErrMsg += Context;
-}
-
-void MSFError::log(raw_ostream &OS) const { OS << ErrMsg << "\n"; }
-
-const std::string &MSFError::getErrorMessage() const { return ErrMsg; }
-
-std::error_code MSFError::convertToErrorCode() const {
-  return std::error_code(static_cast<int>(Code), *Category);
-}
+char MSFError::ID;

lib/DebugInfo/PDB/DIA/DIAError.cpp

@@ -11,14 +11,13 @@ using namespace llvm::pdb;
 class DIAErrorCategory : public std::error_category {
 public:
   const char *name() const noexcept override { return "llvm.pdb.dia"; }
-
   std::string message(int Condition) const override {
     switch (static_cast<dia_error_code>(Condition)) {
     case dia_error_code::could_not_create_impl:
-      return "Failed to connect to DIA at runtime.  Verify that Visual Studio "
+      return "Failed to connect to DIA at runtime. Verify that Visual Studio "
              "is properly installed, or that msdiaXX.dll is in your PATH.";
     case dia_error_code::invalid_file_format:
-      return "Unable to load PDB.  The file has an unrecognized format.";
+      return "Unable to load PDB. The file has an unrecognized format.";
     case dia_error_code::invalid_parameter:
       return "The parameter is incorrect.";
     case dia_error_code::already_loaded:
@@ -32,27 +31,7 @@ public:
   }
 };
 
-static ManagedStatic<DIAErrorCategory> Category;
+static llvm::ManagedStatic<DIAErrorCategory> DIACategory;
+const std::error_category &llvm::pdb::DIAErrCategory() { return *DIACategory; }
 
-char DIAError::ID = 0;
-
-DIAError::DIAError(dia_error_code C) : DIAError(C, "") {}
-
-DIAError::DIAError(StringRef Context)
-    : DIAError(dia_error_code::unspecified, Context) {}
-
-DIAError::DIAError(dia_error_code C, StringRef Context) : Code(C) {
-  ErrMsg = "DIA Error: ";
-  std::error_code EC = convertToErrorCode();
-  ErrMsg += EC.message() + "  ";
-  if (!Context.empty())
-    ErrMsg += Context;
-}
-
-void DIAError::log(raw_ostream &OS) const { OS << ErrMsg << "\n"; }
-
-StringRef DIAError::getErrorMessage() const { return ErrMsg; }
-
-std::error_code DIAError::convertToErrorCode() const {
-  return std::error_code(static_cast<int>(Code), *Category);
-}
+char DIAError::ID;

lib/DebugInfo/PDB/DIA/DIASession.cpp

@@ -42,7 +42,7 @@ static Error ErrorFromHResult(HRESULT Result, const char *Str, Ts &&... Args) {
 
   switch (Result) {
   case E_PDB_NOT_FOUND:
-    return make_error<GenericError>(generic_error_code::invalid_path, Context);
+    return errorCodeToError(std::error_code(ENOENT, std::generic_category()));
   case E_PDB_FORMAT:
     return make_error<DIAError>(dia_error_code::invalid_file_format, Context);
   case E_INVALIDARG:
@@ -71,8 +71,7 @@ static Error LoadDIA(CComPtr<IDiaDataSource> &DiaDataSource) {
 // If the CoCreateInstance call above failed, msdia*.dll is not registered.
 // Try loading the DLL corresponding to the #included DIA SDK.
 #if !defined(_MSC_VER)
-  return llvm::make_error<GenericError>(
-      "DIA is only supported when using MSVC.");
+  return llvm::make_error<PDBError>(pdb_error_code::dia_failed_loading);
 #else
   const wchar_t *msdia_dll = nullptr;
 #if _MSC_VER >= 1900 && _MSC_VER < 2000
@@ -104,7 +103,7 @@ Error DIASession::createFromPdb(StringRef Path,
 
   llvm::SmallVector<UTF16, 128> Path16;
   if (!llvm::convertUTF8ToUTF16String(Path, Path16))
-    return make_error<GenericError>(generic_error_code::invalid_path);
+    return make_error<PDBError>(pdb_error_code::invalid_utf8_path, Path);
 
   const wchar_t *Path16Str = reinterpret_cast<const wchar_t *>(Path16.data());
   HRESULT HR;
@@ -130,7 +129,7 @@ Error DIASession::createFromExe(StringRef Path,
 
   llvm::SmallVector<UTF16, 128> Path16;
   if (!llvm::convertUTF8ToUTF16String(Path, Path16))
-    return make_error<GenericError>(generic_error_code::invalid_path, Path);
+    return make_error<PDBError>(pdb_error_code::invalid_utf8_path, Path);
 
   const wchar_t *Path16Str = reinterpret_cast<const wchar_t *>(Path16.data());
   HRESULT HR;

lib/DebugInfo/PDB/GenericError.cpp

@@ -14,55 +14,34 @@
 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 GenericErrorCategory : public std::error_category {
+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<generic_error_code>(Condition)) {
-    case generic_error_code::unspecified:
+    switch (static_cast<pdb_error_code>(Condition)) {
+    case pdb_error_code::unspecified:
       return "An unknown error has occurred.";
-    case generic_error_code::type_server_not_found:
-      return "Type server PDB was not found.";
-    case generic_error_code::dia_sdk_not_present:
-      return "LLVM was not compiled with support for DIA.  This usually means "
+    case pdb_error_code::type_server_not_found:
+        return "Type server PDB was not found.";
+    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 generic_error_code::invalid_path:
-      return "Unable to load PDB.  Make sure the file exists and is readable.";
+             "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";
     }
     llvm_unreachable("Unrecognized generic_error_code");
   }
 };
-} // end anonymous namespace
 
-static ManagedStatic<GenericErrorCategory> Category;
+static llvm::ManagedStatic<PDBErrorCategory> PDBCategory;
+const std::error_category &llvm::pdb::PDBErrCategory() { return *PDBCategory; }
 
-char GenericError::ID = 0;
-
-GenericError::GenericError(generic_error_code C) : GenericError(C, "") {}
-
-GenericError::GenericError(StringRef Context)
-    : GenericError(generic_error_code::unspecified, Context) {}
-
-GenericError::GenericError(generic_error_code C, StringRef Context) : Code(C) {
-  ErrMsg = "PDB Error: ";
-  std::error_code EC = convertToErrorCode();
-  if (Code != generic_error_code::unspecified)
-    ErrMsg += EC.message() + "  ";
-  if (!Context.empty())
-    ErrMsg += Context;
-}
-
-void GenericError::log(raw_ostream &OS) const { OS << ErrMsg << "\n"; }
-
-StringRef GenericError::getErrorMessage() const { return ErrMsg; }
-
-std::error_code GenericError::convertToErrorCode() const {
-  return std::error_code(static_cast<int>(Code), *Category);
-}
+char PDBError::ID;

lib/DebugInfo/PDB/Native/NativeSession.cpp

@@ -11,7 +11,6 @@
 
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/DebugInfo/CodeView/TypeIndex.h"
-#include "llvm/DebugInfo/PDB/GenericError.h"
 #include "llvm/DebugInfo/PDB/IPDBEnumChildren.h"
 #include "llvm/DebugInfo/PDB/IPDBSourceFile.h"
 #include "llvm/DebugInfo/PDB/Native/NativeBuiltinSymbol.h"

lib/DebugInfo/PDB/Native/PDBFile.cpp

@@ -125,7 +125,7 @@ Error PDBFile::parseFileHeaders() {
   if (auto EC = Reader.readObject(SB)) {
     consumeError(std::move(EC));
     return make_error<RawError>(raw_error_code::corrupt_file,
-                                "Does not contain superblock");
+                                "MSF superblock is missing");
   }
 
   if (auto EC = msf::validateSuperBlock(*SB))

lib/DebugInfo/PDB/Native/PDBFileBuilder.cpp

@@ -12,7 +12,6 @@
 #include "llvm/ADT/BitVector.h"
 
 #include "llvm/DebugInfo/MSF/MSFBuilder.h"
-#include "llvm/DebugInfo/PDB/GenericError.h"
 #include "llvm/DebugInfo/PDB/Native/DbiStream.h"
 #include "llvm/DebugInfo/PDB/Native/DbiStreamBuilder.h"
 #include "llvm/DebugInfo/PDB/Native/GSIStreamBuilder.h"

lib/DebugInfo/PDB/Native/RawError.cpp

@@ -5,14 +5,12 @@
 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 RawErrorCategory : public std::error_category {
 public:
   const char *name() const noexcept override { return "llvm.pdb.raw"; }
-
   std::string message(int Condition) const override {
     switch (static_cast<raw_error_code>(Condition)) {
     case raw_error_code::unspecified:
@@ -46,30 +44,8 @@ public:
     llvm_unreachable("Unrecognized raw_error_code");
   }
 };
-} // end anonymous namespace
 
-static ManagedStatic<RawErrorCategory> Category;
+static llvm::ManagedStatic<RawErrorCategory> RawCategory;
+const std::error_category &llvm::pdb::RawErrCategory() { return *RawCategory; }
 
-char RawError::ID = 0;
-
-RawError::RawError(raw_error_code C) : RawError(C, "") {}
-
-RawError::RawError(const std::string &Context)
-    : RawError(raw_error_code::unspecified, Context) {}
-
-RawError::RawError(raw_error_code C, const std::string &Context) : Code(C) {
-  ErrMsg = "Native PDB Error: ";
-  std::error_code EC = convertToErrorCode();
-  if (Code != raw_error_code::unspecified)
-    ErrMsg += EC.message() + "  ";
-  if (!Context.empty())
-    ErrMsg += Context;
-}
-
-void RawError::log(raw_ostream &OS) const { OS << ErrMsg << "\n"; }
-
-const std::string &RawError::getErrorMessage() const { return ErrMsg; }
-
-std::error_code RawError::convertToErrorCode() const {
-  return std::error_code(static_cast<int>(Code), *Category);
-}
+char RawError::ID;

lib/DebugInfo/PDB/PDB.cpp

@@ -29,7 +29,7 @@ Error llvm::pdb::loadDataForPDB(PDB_ReaderType Type, StringRef Path,
         MemoryBuffer::getFileOrSTDIN(Path, /*FileSize=*/-1,
                                      /*RequiresNullTerminator=*/false);
     if (!ErrorOrBuffer)
-      return make_error<GenericError>(generic_error_code::invalid_path, Path);
+      return errorCodeToError(ErrorOrBuffer.getError());
 
     return NativeSession::createFromPdb(std::move(*ErrorOrBuffer), Session);
   }
@@ -37,7 +37,7 @@ Error llvm::pdb::loadDataForPDB(PDB_ReaderType Type, StringRef Path,
 #if LLVM_ENABLE_DIA_SDK
   return DIASession::createFromPdb(Path, Session);
 #else
-  return make_error<GenericError>("DIA is not installed on the system");
+  return make_error<PDBError>(pdb_error_code::dia_sdk_not_present);
 #endif
 }
 
@@ -50,6 +50,6 @@ Error llvm::pdb::loadDataForEXE(PDB_ReaderType Type, StringRef Path,
 #if LLVM_ENABLE_DIA_SDK
   return DIASession::createFromExe(Path, Session);
 #else
-  return make_error<GenericError>("DIA is not installed on the system");
+  return make_error<PDBError>(pdb_error_code::dia_sdk_not_present);
 #endif
 }

lib/DebugInfo/Symbolize/Symbolize.cpp

@@ -410,7 +410,8 @@ LLVMSymbolizer::getOrCreateModuleInfo(const std::string &ModuleName,
                                     Objects.first->getFileName(), Session)) {
         Modules.insert(
             std::make_pair(ModuleName, std::unique_ptr<SymbolizableModule>()));
-        return std::move(Err);
+        // Return along the PDB filename to provide more context
+        return createFileError(PDBFileName, std::move(Err));
       }
       Context.reset(new PDBContext(*CoffObject, std::move(Session)));
     }

lib/Support/BinaryStreamError.cpp

@@ -47,7 +47,7 @@ BinaryStreamError::BinaryStreamError(stream_error_code C, StringRef Context)
   }
 }
 
-void BinaryStreamError::log(raw_ostream &OS) const { OS << ErrMsg << "\n"; }
+void BinaryStreamError::log(raw_ostream &OS) const { OS << ErrMsg; }
 
 StringRef BinaryStreamError::getErrorMessage() const { return ErrMsg; }
 

test/DebugInfo/PDB/pdb-invalid-type.test

@@ -2,7 +2,7 @@
 # RUN: llvm-pdbutil yaml2pdb -pdb=%t2.pdb %s
 # RUN: not llvm-pdbutil merge -pdb=%t.pdb %t1.pdb %t2.pdb 2>&1 | FileCheck %s
 
-# CHECK: CodeView Error: The CodeView record is corrupted.
+# CHECK: The CodeView record is corrupted
 
 ---
 TpiStream:

test/DebugInfo/PDB/pdbdump-headers.test

@@ -1167,4 +1167,4 @@ BIG-NEXT:   Mod 0045 | `Import:api-ms-win-crt-heap-l1-1-0.dll`:
 BIG-NEXT:   Mod 0046 | `api-ms-win-crt-heap-l1-1-0.dll`:
 BIG-NEXT:   Mod 0047 | `* Linker *`:
 
-BAD-BLOCK-SIZE: Native PDB Error: The PDB file is corrupt. Does not contain superblock
+BAD-BLOCK-SIZE: The PDB file is corrupt. MSF superblock is missing

test/tools/llvm-readobj/codeview-merging-cycle.test

@@ -1,6 +1,6 @@
 ; RUN: not llvm-readobj -codeview-merged-types %S/Inputs/codeview-cycle.obj 2>&1 | FileCheck %s
 
-; CHECK: Error{{.*}} input type graph contains cycles
+; CHECK: Error{{.*}} Input type graph contains cycles
 
 ; To reproduce codeview-cycle.obj:
 ; $ cat codeview-cycle.asm

test/tools/llvm-symbolizer/pdb/missing_pdb.test

@@ -8,7 +8,7 @@ ADDR: 0x401001
 
 llvm-symbolizer should print one error and two unknown line info records.
 
-ERROR: LLVMSymbolizer: error reading file: PDB Error: Unable to load PDB.  Make sure the file exists and is readable.
+ERROR: LLVMSymbolizer: error reading file: {{.*}}: {{N|n}}o such file or directory
 ERROR-NOT: error reading file
 
 CHECK: ??

tools/llvm-pdbutil/llvm-pdbutil.cpp

@@ -46,7 +46,6 @@
 #include "llvm/DebugInfo/CodeView/StringsAndChecksums.h"
 #include "llvm/DebugInfo/CodeView/TypeStreamMerger.h"
 #include "llvm/DebugInfo/MSF/MSFBuilder.h"
-#include "llvm/DebugInfo/PDB/GenericError.h"
 #include "llvm/DebugInfo/PDB/IPDBEnumChildren.h"
 #include "llvm/DebugInfo/PDB/IPDBInjectedSource.h"
 #include "llvm/DebugInfo/PDB/IPDBRawSymbol.h"
@@ -681,7 +680,7 @@ static void yamlToPdb(StringRef Path) {
                                    /*RequiresNullTerminator=*/false);
 
   if (ErrorOrBuffer.getError()) {
-    ExitOnErr(make_error<GenericError>(generic_error_code::invalid_path, Path));
+    ExitOnErr(createFileError(Path, errorCodeToError(ErrorOrBuffer.getError())));
   }
 
   std::unique_ptr<MemoryBuffer> &Buffer = ErrorOrBuffer.get();

tools/obj2yaml/Error.cpp

@@ -53,7 +53,7 @@ const std::error_category &obj2yaml_category() {
 
 char Obj2YamlError::ID = 0;
 
-void Obj2YamlError::log(raw_ostream &OS) const { OS << ErrMsg << "\n"; }
+void Obj2YamlError::log(raw_ostream &OS) const { OS << ErrMsg; }
 
 std::error_code Obj2YamlError::convertToErrorCode() const {
   return std::error_code(static_cast<int>(Code), obj2yaml_category());