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llvm-mirror/lib/Object/Error.cpp
Kevin Enderby 105d2da2bd Produce another specific error message for a malformed Mach-O file when a load
command has a size less than 8 bytes.

I think the existing test case in test/Object/macho-invalid.test for
macho64-invalid-too-small-load-command was trying to test for this but that
test case triggered a different error given how it was constructed.  So I
constructed a new test case that would trigger this specific error.

I also changed the error message to be consistent with the other malformed Mach-O
file error messages.  I also removed object_error::macho_small_load_command from
Object/Error.h as it is not needed and can just use object_error::parse_failed
and let the error message string distinguish the error.

llvm-svn: 268463
2016-05-03 23:13:50 +00:00

79 lines
2.7 KiB
C++

//===- Error.cpp - system_error extensions for Object -----------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This defines a new error_category for the Object library.
//
//===----------------------------------------------------------------------===//
#include "llvm/Object/Error.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/ManagedStatic.h"
using namespace llvm;
using namespace object;
namespace {
class _object_error_category : public std::error_category {
public:
const char* name() const LLVM_NOEXCEPT override;
std::string message(int ev) const override;
};
}
const char *_object_error_category::name() const LLVM_NOEXCEPT {
return "llvm.object";
}
std::string _object_error_category::message(int EV) const {
object_error E = static_cast<object_error>(EV);
switch (E) {
case object_error::arch_not_found:
return "No object file for requested architecture";
case object_error::invalid_file_type:
return "The file was not recognized as a valid object file";
case object_error::parse_failed:
return "Invalid data was encountered while parsing the file";
case object_error::unexpected_eof:
return "The end of the file was unexpectedly encountered";
case object_error::string_table_non_null_end:
return "String table must end with a null terminator";
case object_error::invalid_section_index:
return "Invalid section index";
case object_error::bitcode_section_not_found:
return "Bitcode section not found in object file";
case object_error::macho_load_segment_too_many_sections:
return "Mach-O segment load command contains too many sections";
case object_error::macho_load_segment_too_small:
return "Mach-O segment load command size is too small";
}
llvm_unreachable("An enumerator of object_error does not have a message "
"defined.");
}
char BinaryError::ID = 0;
char GenericBinaryError::ID = 0;
GenericBinaryError::GenericBinaryError(std::string FileName, Twine Msg)
: FileName(std::move(FileName)), Msg(Msg.str()) {}
GenericBinaryError::GenericBinaryError(std::string FileName, Twine Msg, object_error ECOverride)
: FileName(std::move(FileName)), Msg(Msg.str()) {
setErrorCode(make_error_code(ECOverride));
}
void GenericBinaryError::log(raw_ostream &OS) const {
OS << "Error in " << FileName << ": " << Msg;
}
static ManagedStatic<_object_error_category> error_category;
const std::error_category &object::object_category() {
return *error_category;
}