d93b07f0b0
- Log the reason for a PDB or precompiled-OBJ load failure
- Properly handle out-of-date PDB or precompiled-OBJ signature by displaying a corresponding error
- Slightly change behavior on PDB failure: any subsequent load attempt from another OBJ would result in the same error message being logged
- Slightly change behavior on PDB failure: retry with filename only if previous error was ENOENT ("no such file or directory")
- Tests: a. for native PDB errors; b. cover all the cases above
Differential Revision: https://reviews.llvm.org/D51559
llvm-svn: 341825
48 lines
1.9 KiB
C++
48 lines
1.9 KiB
C++
//===- Error.cpp - system_error extensions for PDB --------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/DebugInfo/PDB/GenericError.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/ManagedStatic.h"
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using namespace llvm;
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using namespace llvm::pdb;
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// FIXME: This class is only here to support the transition to llvm::Error. It
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// will be removed once this transition is complete. Clients should prefer to
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// deal with the Error value directly, rather than converting to error_code.
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class PDBErrorCategory : public std::error_category {
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public:
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const char *name() const noexcept override { return "llvm.pdb"; }
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std::string message(int Condition) const override {
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switch (static_cast<pdb_error_code>(Condition)) {
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case pdb_error_code::unspecified:
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return "An unknown error has occurred.";
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case pdb_error_code::type_server_not_found:
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return "Type server PDB was not found.";
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case pdb_error_code::dia_sdk_not_present:
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return "LLVM was not compiled with support for DIA. This usually means "
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"that you are not using MSVC, or your Visual Studio "
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"installation is corrupt.";
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case pdb_error_code::dia_failed_loading:
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return "DIA is only supported when using MSVC.";
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case pdb_error_code::invalid_utf8_path:
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return "The PDB file path is an invalid UTF8 sequence.";
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case pdb_error_code::signature_out_of_date:
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return "The signature does not match; the file(s) might be out of date.";
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}
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llvm_unreachable("Unrecognized generic_error_code");
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}
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};
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static llvm::ManagedStatic<PDBErrorCategory> PDBCategory;
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const std::error_category &llvm::pdb::PDBErrCategory() { return *PDBCategory; }
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char PDBError::ID;
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