b7aec33125
createELFObj() may call error(...), for example when file is too short. In that case header is not set and following line lead to crash: EMachine = ELFObj.getHeader()->e_machine; Patch fixes the issue. Differential revision: https://reviews.llvm.org/D25233 llvm-svn: 283532
78 lines
2.2 KiB
C++
78 lines
2.2 KiB
C++
//===- Error.h --------------------------------------------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Linker
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// In LLD, we have three levels of errors: fatal, error or warn.
|
|
//
|
|
// Fatal makes the program exit immediately with an error message.
|
|
// You shouldn't use it except for reporting a corrupted input file.
|
|
//
|
|
// Error prints out an error message and set a global variable HasError
|
|
// to true to record the fact that we met an error condition. It does
|
|
// not exit, so it is safe for a lld-as-a-library use case. It is generally
|
|
// useful because it can report more than one errors in a single run.
|
|
//
|
|
// Warn doesn't do anything but printing out a given message.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLD_ELF_ERROR_H
|
|
#define LLD_ELF_ERROR_H
|
|
|
|
#include "lld/Core/LLVM.h"
|
|
|
|
#include "llvm/Support/Error.h"
|
|
|
|
namespace lld {
|
|
namespace elf {
|
|
|
|
extern bool HasError;
|
|
extern llvm::raw_ostream *ErrorOS;
|
|
|
|
void log(const Twine &Msg);
|
|
void warn(const Twine &Msg);
|
|
|
|
void error(const Twine &Msg);
|
|
void error(std::error_code EC, const Twine &Prefix);
|
|
|
|
template <typename T> void error(const ErrorOr<T> &V, const Twine &Prefix) {
|
|
error(V.getError(), Prefix);
|
|
}
|
|
|
|
LLVM_ATTRIBUTE_NORETURN void fatal(const Twine &Msg);
|
|
LLVM_ATTRIBUTE_NORETURN void fatal(std::error_code EC, const Twine &Prefix);
|
|
|
|
template <class T> T check(ErrorOr<T> E) {
|
|
if (auto EC = E.getError())
|
|
fatal(EC.message());
|
|
return std::move(*E);
|
|
}
|
|
|
|
template <class T> T check(Expected<T> E) {
|
|
if (!E)
|
|
fatal(errorToErrorCode(E.takeError()).message());
|
|
return std::move(*E);
|
|
}
|
|
|
|
template <class T> T check(ErrorOr<T> E, const Twine &Prefix) {
|
|
if (auto EC = E.getError())
|
|
fatal(Prefix + ": " + EC.message());
|
|
return std::move(*E);
|
|
}
|
|
|
|
template <class T> T check(Expected<T> E, const Twine &Prefix) {
|
|
if (!E)
|
|
fatal(Prefix + ": " + errorToErrorCode(E.takeError()).message());
|
|
return std::move(*E);
|
|
}
|
|
|
|
} // namespace elf
|
|
} // namespace lld
|
|
|
|
#endif
|