[llvm-readobj] - Remove 'error(Error EC)' helper.

We do not need it. I replaced it with
reportError(StringRef Input, Error Err).

Differential revision: https://reviews.llvm.org/D66011

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@368677 91177308-0d34-0410-b5e6-96231b3b80d8

test/tools/llvm-readobj/gnu-notes.test

@@ -79,10 +79,10 @@ Sections:
 ## that goes past the end of file.
 
 # RUN: yaml2obj --docnum=2 %s > %t2.so
-# RUN: not llvm-readelf --notes %t2.so 2>&1 | FileCheck %s --check-prefix=ERR1
+# RUN: not llvm-readelf --notes %t2.so 2>&1 | FileCheck -DFILE=%t2.so %s --check-prefix=ERR1
-# RUN: not llvm-readobj --notes %t2.so 2>&1 | FileCheck %s --check-prefix=ERR1
+# RUN: not llvm-readobj --notes %t2.so 2>&1 | FileCheck -DFILE=%t2.so %s --check-prefix=ERR1
 
-# ERR1: error: SHT_NOTE section [index 1] has invalid offset (0xffff0000) or size (0x0)
+# ERR1: error: '[[FILE]]': SHT_NOTE section [index 1] has invalid offset (0xffff0000) or size (0x0)
 
 --- !ELF
 FileHeader:
@@ -99,10 +99,10 @@ Sections:
 ## that goes past the end of file.
 
 # RUN: yaml2obj --docnum=3 %s > %t3.so
-# RUN: not llvm-readelf --notes %t3.so 2>&1 | FileCheck %s --check-prefix=ERR2
+# RUN: not llvm-readelf --notes %t3.so 2>&1 | FileCheck -DFILE=%t3.so %s --check-prefix=ERR2
-# RUN: not llvm-readobj --notes %t3.so 2>&1 | FileCheck %s --check-prefix=ERR2
+# RUN: not llvm-readobj --notes %t3.so 2>&1 | FileCheck -DFILE=%t3.so %s --check-prefix=ERR2
 
-# ERR2: error: SHT_NOTE section [index 1] has invalid offset (0x180) or size (0xffff0000)
+# ERR2: error: '[[FILE]]': SHT_NOTE section [index 1] has invalid offset (0x180) or size (0xffff0000)
 
 --- !ELF
 FileHeader:
@@ -119,10 +119,10 @@ Sections:
 ## goes past the end of file.
 
 # RUN: yaml2obj --docnum=4 %s > %t4.so
-# RUN: not llvm-readelf --notes %t4.so 2>&1 | FileCheck %s --check-prefix=ERR3
+# RUN: not llvm-readelf --notes %t4.so 2>&1 | FileCheck -DFILE=%t4.so %s --check-prefix=ERR3
-# RUN: not llvm-readobj --notes %t4.so 2>&1 | FileCheck %s --check-prefix=ERR3
+# RUN: not llvm-readobj --notes %t4.so 2>&1 | FileCheck -DFILE=%t4.so %s --check-prefix=ERR3
 
-# ERR3: error: PT_NOTE header has invalid offset (0xffff0000) or size (0x0)
+# ERR3: error: '[[FILE]]': PT_NOTE header has invalid offset (0xffff0000) or size (0x0)
 
 --- !ELF
 FileHeader:
@@ -143,10 +143,10 @@ ProgramHeaders:
 ## goes past the end of file.
 
 # RUN: yaml2obj --docnum=5 %s > %t5.so
-# RUN: not llvm-readelf --notes %t5.so 2>&1 | FileCheck %s --check-prefix=ERR4
+# RUN: not llvm-readelf --notes %t5.so 2>&1 | FileCheck -DFILE=%t5.so  %s --check-prefix=ERR4
-# RUN: not llvm-readobj --notes %t5.so 2>&1 | FileCheck %s --check-prefix=ERR4
+# RUN: not llvm-readobj --notes %t5.so 2>&1 | FileCheck -DFILE=%t5.so %s --check-prefix=ERR4
 
-# ERR4: error: PT_NOTE header has invalid offset (0x1b8) or size (0xffff0000)
+# ERR4: error: '[[FILE]]': PT_NOTE header has invalid offset (0x1b8) or size (0xffff0000)
 
 --- !ELF
 FileHeader:

tools/llvm-readobj/ARMEHABIPrinter.h

@@ -370,7 +370,7 @@ PrinterContext<ET>::FunctionAtAddress(unsigned Section,
     return readobj_error::unknown_symbol;
   auto StrTableOrErr = ELF->getStringTableForSymtab(*Symtab);
   if (!StrTableOrErr)
-    error(StrTableOrErr.takeError());
+    reportError(StrTableOrErr.takeError(), FileName);
   StringRef StrTable = *StrTableOrErr;
 
   for (const Elf_Sym &Sym : unwrapOrError(FileName, ELF->symbols(Symtab)))
@@ -405,7 +405,7 @@ PrinterContext<ET>::FindExceptionTable(unsigned IndexSectionIndex,
 
     auto SymTabOrErr = ELF->getSection(Sec.sh_link);
     if (!SymTabOrErr)
-      error(SymTabOrErr.takeError());
+      reportError(SymTabOrErr.takeError(), FileName);
     const Elf_Shdr *SymTab = *SymTabOrErr;
 
     for (const Elf_Rel &R : unwrapOrError(FileName, ELF->rels(&Sec))) {

tools/llvm-readobj/COFFDumper.cpp

@@ -912,26 +912,33 @@ void COFFDumper::initializeFileAndStringTables(BinaryStreamReader &Reader) {
     // The section consists of a number of subsection in the following format:
     // |SubSectionType|SubSectionSize|Contents...|
     uint32_t SubType, SubSectionSize;
-    error(Reader.readInteger(SubType));
+
-    error(Reader.readInteger(SubSectionSize));
+    if (Error E = Reader.readInteger(SubType))
+      reportError(std::move(E), Obj->getFileName());
+    if (Error E = Reader.readInteger(SubSectionSize))
+      reportError(std::move(E), Obj->getFileName());
 
     StringRef Contents;
-    error(Reader.readFixedString(Contents, SubSectionSize));
+    if (Error E = Reader.readFixedString(Contents, SubSectionSize))
+      reportError(std::move(E), Obj->getFileName());
 
     BinaryStreamRef ST(Contents, support::little);
     switch (DebugSubsectionKind(SubType)) {
     case DebugSubsectionKind::FileChecksums:
-      error(CVFileChecksumTable.initialize(ST));
+      if (Error E = CVFileChecksumTable.initialize(ST))
+        reportError(std::move(E), Obj->getFileName());
       break;
     case DebugSubsectionKind::StringTable:
-      error(CVStringTable.initialize(ST));
+      if (Error E = CVStringTable.initialize(ST))
+        reportError(std::move(E), Obj->getFileName());
       break;
     default:
       break;
     }
 
     uint32_t PaddedSize = alignTo(SubSectionSize, 4);
-    error(Reader.skip(PaddedSize - SubSectionSize));
+    if (Error E = Reader.skip(PaddedSize - SubSectionSize))
+      reportError(std::move(E), Obj->getFileName());
   }
 }
 
@@ -949,7 +956,9 @@ void COFFDumper::printCodeViewSymbolSection(StringRef SectionName,
   W.printNumber("Section", SectionName, Obj->getSectionID(Section));
 
   uint32_t Magic;
-  error(consume(Data, Magic));
+  if (Error E = consume(Data, Magic))
+    reportError(std::move(E), Obj->getFileName());
+
   W.printHex("Magic", Magic);
   if (Magic != COFF::DEBUG_SECTION_MAGIC)
     return error(object_error::parse_failed);
@@ -962,8 +971,10 @@ void COFFDumper::printCodeViewSymbolSection(StringRef SectionName,
     // The section consists of a number of subsection in the following format:
     // |SubSectionType|SubSectionSize|Contents...|
     uint32_t SubType, SubSectionSize;
-    error(consume(Data, SubType));
+    if (Error E = consume(Data, SubType))
-    error(consume(Data, SubSectionSize));
+      reportError(std::move(E), Obj->getFileName());
+    if (Error E = consume(Data, SubSectionSize))
+      reportError(std::move(E), Obj->getFileName());
 
     ListScope S(W, "Subsection");
     // Dump the subsection as normal even if the ignore bit is set.
@@ -1038,7 +1049,8 @@ void COFFDumper::printCodeViewSymbolSection(StringRef SectionName,
       BinaryStreamReader SR(Contents, llvm::support::little);
 
       DebugFrameDataSubsectionRef FrameData;
-      error(FrameData.initialize(SR));
+      if (Error E = FrameData.initialize(SR))
+        reportError(std::move(E), Obj->getFileName());
 
       StringRef LinkageName;
       error(resolveSymbolName(Obj->getCOFFSection(Section), SectionContents,
@@ -1100,7 +1112,8 @@ void COFFDumper::printCodeViewSymbolSection(StringRef SectionName,
     BinaryStreamReader Reader(FunctionLineTables[Name], support::little);
 
     DebugLinesSubsectionRef LineInfo;
-    error(LineInfo.initialize(Reader));
+    if (Error E = LineInfo.initialize(Reader))
+      reportError(std::move(E), Obj->getFileName());
 
     W.printHex("Flags", LineInfo.header()->Flags);
     W.printHex("CodeSize", LineInfo.header()->CodeSize);
@@ -1154,9 +1167,9 @@ void COFFDumper::printCodeViewSymbolsSubsection(StringRef Subsection,
     error(object_error::parse_failed);
   }
 
-  if (auto EC = CVSD.dump(Symbols)) {
+  if (Error E = CVSD.dump(Symbols)) {
     W.flush();
-    error(std::move(EC));
+    reportError(std::move(E), Obj->getFileName());
   }
   CompilationCPUType = CVSD.getCompilationCPUType();
   W.flush();
@@ -1165,7 +1178,8 @@ void COFFDumper::printCodeViewSymbolsSubsection(StringRef Subsection,
 void COFFDumper::printCodeViewFileChecksums(StringRef Subsection) {
   BinaryStreamRef Stream(Subsection, llvm::support::little);
   DebugChecksumsSubsectionRef Checksums;
-  error(Checksums.initialize(Stream));
+  if (Error E = Checksums.initialize(Stream))
+    reportError(std::move(E), Obj->getFileName());
 
   for (auto &FC : Checksums) {
     DictScope S(W, "FileChecksum");
@@ -1184,7 +1198,8 @@ void COFFDumper::printCodeViewFileChecksums(StringRef Subsection) {
 void COFFDumper::printCodeViewInlineeLines(StringRef Subsection) {
   BinaryStreamReader SR(Subsection, llvm::support::little);
   DebugInlineeLinesSubsectionRef Lines;
-  error(Lines.initialize(SR));
+  if (Error E = Lines.initialize(SR))
+    reportError(std::move(E), Obj->getFileName());
 
   for (auto &Line : Lines) {
     DictScope S(W, "InlineeSourceLine");
@@ -1232,7 +1247,9 @@ void COFFDumper::mergeCodeViewTypes(MergingTypeTableBuilder &CVIDs,
     if (SectionName == ".debug$T") {
       StringRef Data = unwrapOrError(Obj->getFileName(), S.getContents());
       uint32_t Magic;
-      error(consume(Data, Magic));
+      if (Error E = consume(Data, Magic))
+        reportError(std::move(E), Obj->getFileName());
+
       if (Magic != 4)
         error(object_error::parse_failed);
 
@@ -1248,14 +1265,14 @@ void COFFDumper::mergeCodeViewTypes(MergingTypeTableBuilder &CVIDs,
       if (GHash) {
         std::vector<GloballyHashedType> Hashes =
             GloballyHashedType::hashTypes(Types);
-        if (auto EC =
+        if (Error E =
                 mergeTypeAndIdRecords(GlobalCVIDs, GlobalCVTypes, SourceToDest,
                                       Types, Hashes, PCHSignature))
-          return error(std::move(EC));
+          return reportError(std::move(E), Obj->getFileName());
       } else {
-        if (auto EC = mergeTypeAndIdRecords(CVIDs, CVTypes, SourceToDest, Types,
+        if (Error E = mergeTypeAndIdRecords(CVIDs, CVTypes, SourceToDest, Types,
                                             PCHSignature))
-          return error(std::move(EC));
+          return reportError(std::move(E), Obj->getFileName());
       }
     }
   }
@@ -1271,7 +1288,9 @@ void COFFDumper::printCodeViewTypeSection(StringRef SectionName,
     W.printBinaryBlock("Data", Data);
 
   uint32_t Magic;
-  error(consume(Data, Magic));
+  if (Error E = consume(Data, Magic))
+    reportError(std::move(E), Obj->getFileName());
+
   W.printHex("Magic", Magic);
   if (Magic != COFF::DEBUG_SECTION_MAGIC)
     return error(object_error::parse_failed);
@@ -1279,7 +1298,9 @@ void COFFDumper::printCodeViewTypeSection(StringRef SectionName,
   Types.reset(Data, 100);
 
   TypeDumpVisitor TDV(Types, &W, opts::CodeViewSubsectionBytes);
-  error(codeview::visitTypeStream(Types, TDV));
+  if (Error E = codeview::visitTypeStream(Types, TDV))
+    reportError(std::move(E), Obj->getFileName());
+
   W.flush();
 }
 
@@ -1504,7 +1525,7 @@ void COFFDumper::printSymbol(const SymbolRef &Sym) {
           error(EC);
         Expected<StringRef> Res = getSectionName(Obj, AuxNumber, Assoc);
         if (!Res)
-          error(Res.takeError());
+          reportError(Res.takeError(), Obj->getFileName());
         AssocName = *Res;
 
         W.printNumber("AssocSection", AssocName, AuxNumber);
@@ -1906,7 +1927,8 @@ void llvm::dumpCodeViewMergedTypes(ScopedPrinter &Writer,
   {
     ListScope S(Writer, "MergedTypeStream");
     TypeDumpVisitor TDV(TpiTypes, &Writer, opts::CodeViewSubsectionBytes);
-    error(codeview::visitTypeStream(TpiTypes, TDV));
+    if (Error Err = codeview::visitTypeStream(TpiTypes, TDV))
+      reportError(std::move(Err), "<?>");
     Writer.flush();
   }
 
@@ -1917,7 +1939,8 @@ void llvm::dumpCodeViewMergedTypes(ScopedPrinter &Writer,
     ListScope S(Writer, "MergedIDStream");
     TypeDumpVisitor TDV(TpiTypes, &Writer, opts::CodeViewSubsectionBytes);
     TDV.setIpiTypes(IpiTypes);
-    error(codeview::visitTypeStream(IpiTypes, TDV));
+    if (Error Err = codeview::visitTypeStream(IpiTypes, TDV))
+      reportError(std::move(Err), "<?>");
     Writer.flush();
   }
 }

tools/llvm-readobj/ELFDumper.cpp

@@ -4417,7 +4417,7 @@ void GNUStyle<ELFT>::printNotes(const ELFFile<ELFT> *Obj) {
       for (const auto &Note : Obj->notes(P, Err))
         ProcessNote(Note);
       if (Err)
-        error(std::move(Err));
+        reportError(std::move(Err), this->FileName);
     }
   } else {
     for (const auto &S :
@@ -4429,7 +4429,7 @@ void GNUStyle<ELFT>::printNotes(const ELFFile<ELFT> *Obj) {
       for (const auto &Note : Obj->notes(S, Err))
         ProcessNote(Note);
       if (Err)
-        error(std::move(Err));
+        reportError(std::move(Err), this->FileName);
     }
   }
 }
@@ -4483,10 +4483,10 @@ void DumpStyle<ELFT>::printFunctionStackSize(
   // integer.
   if (*Offset == PrevOffset)
     reportError(
-        FileStr,
         createStringError(object_error::parse_failed,
                           "could not extract a valid stack size in section %s",
-                          SectionName.data()));
+                          SectionName.data()),
+        FileStr);
 
   printStackSizeEntry(StackSize, FuncName);
 }
@@ -4545,11 +4545,12 @@ void DumpStyle<ELFT>::printStackSize(const ELFObjectFile<ELFT> *Obj,
 
   uint64_t Offset = Reloc.getOffset();
   if (!Data.isValidOffsetForDataOfSize(Offset, sizeof(Elf_Addr) + 1))
-    reportError(FileStr, createStringError(
+    reportError(
-                             object_error::parse_failed,
+        createStringError(object_error::parse_failed,
-                             "found invalid relocation offset into section %s "
+                          "found invalid relocation offset into section %s "
-                             "while trying to extract a stack size entry",
+                          "while trying to extract a stack size entry",
-                             StackSizeSectionName.data()));
+                          StackSizeSectionName.data()),
+        FileStr);
 
   uint64_t Addend = Data.getAddress(&Offset);
   uint64_t SymValue = Resolver(Reloc, RelocSymValue, Addend);
@@ -4595,11 +4596,11 @@ void DumpStyle<ELFT>::printNonRelocatableStackSizes(
       // size. Check for an extra byte before we try to process the entry.
       if (!Data.isValidOffsetForDataOfSize(Offset, sizeof(Elf_Addr) + 1)) {
         reportError(
-            FileStr,
             createStringError(
                 object_error::parse_failed,
                 "section %s ended while trying to extract a stack size entry",
-                SectionName.data()));
+                SectionName.data()),
+            FileStr);
       }
       uint64_t SymValue = Data.getAddress(&Offset);
       printFunctionStackSize(Obj, SymValue,
@@ -4689,10 +4690,10 @@ void DumpStyle<ELFT>::printRelocatableStackSizes(
         RelocSec.getName(RelocSectionName);
         StringRef RelocName = EF->getRelocationTypeName(Reloc.getType());
         reportError(
-            FileStr,
             createStringError(object_error::parse_failed,
                               "unsupported relocation type in section %s: %s",
-                              RelocSectionName.data(), RelocName.data()));
+                              RelocSectionName.data(), RelocName.data()),
+            FileStr);
       }
       this->printStackSize(Obj, Reloc, FunctionSec, StackSizeSectionName,
                            Resolver, Data);
@@ -5568,7 +5569,7 @@ void LLVMStyle<ELFT>::printNotes(const ELFFile<ELFT> *Obj) {
       for (const auto &Note : Obj->notes(P, Err))
         ProcessNote(Note);
       if (Err)
-        error(std::move(Err));
+        reportError(std::move(Err), this->FileName);
     }
   } else {
     for (const auto &S : unwrapOrError(this->FileName, Obj->sections())) {
@@ -5580,7 +5581,7 @@ void LLVMStyle<ELFT>::printNotes(const ELFFile<ELFT> *Obj) {
       for (const auto &Note : Obj->notes(S, Err))
         ProcessNote(Note);
       if (Err)
-        error(std::move(Err));
+        reportError(std::move(Err), this->FileName);
     }
   }
 }

tools/llvm-readobj/Win64EHDumper.cpp

@@ -289,7 +289,9 @@ void Dumper::printRuntimeFunction(const Context &Ctx,
   resolveRelocation(Ctx, Section, SectionOffset + 8, XData, Offset);
 
   ArrayRef<uint8_t> Contents;
-  error(Ctx.COFF.getSectionContents(XData, Contents));
+  if (Error E = Ctx.COFF.getSectionContents(XData, Contents))
+    reportError(std::move(E), Ctx.COFF.getFileName());
+
   if (Contents.empty())
     return;
 
@@ -311,7 +313,9 @@ void Dumper::printData(const Context &Ctx) {
 
     const coff_section *PData = Ctx.COFF.getCOFFSection(Section);
     ArrayRef<uint8_t> Contents;
-    error(Ctx.COFF.getSectionContents(PData, Contents));
+
+    if (Error E = Ctx.COFF.getSectionContents(PData, Contents))
+      reportError(std::move(E), Ctx.COFF.getFileName());
     if (Contents.empty())
       continue;
 

tools/llvm-readobj/llvm-readobj.cpp

@@ -382,10 +382,12 @@ LLVM_ATTRIBUTE_NORETURN void reportError(Twine Msg) {
   exit(1);
 }
 
-void reportError(StringRef Input, Error Err) {
+void reportError(Error Err, StringRef Input) {
+  assert(Err);
   if (Input == "-")
     Input = "<stdin>";
-  error(createFileError(Input, std::move(Err)));
+  handleAllErrors(createFileError(Input, std::move(Err)),
+                  [&](const ErrorInfoBase &EI) { reportError(EI.message()); });
 }
 
 void reportWarning(Twine Msg) {
@@ -406,13 +408,6 @@ void warn(Error Err) {
   });
 }
 
-void error(Error EC) {
-  if (!EC)
-    return;
-  handleAllErrors(std::move(EC),
-                  [&](const ErrorInfoBase &EI) { reportError(EI.message()); });
-}
-
 void error(std::error_code EC) {
   if (!EC)
     return;
@@ -421,8 +416,9 @@ void error(std::error_code EC) {
 
 } // namespace llvm
 
-static void reportError(StringRef Input, std::error_code EC) {
+static void reportError(std::error_code EC, StringRef Input) {
-  reportError(Input, errorCodeToError(EC));
+  assert(EC != readobj_error::success);
+  reportError(errorCodeToError(EC), Input);
 }
 
 static bool isMipsArch(unsigned Arch) {
@@ -482,7 +478,7 @@ static void dumpObject(const ObjectFile *Obj, ScopedPrinter &Writer,
 
   std::unique_ptr<ObjDumper> Dumper;
   if (std::error_code EC = createDumper(Obj, Writer, Dumper))
-    reportError(FileStr, EC);
+    reportError(EC, FileStr);
 
   if (opts::Output == opts::LLVM || opts::InputFilenames.size() > 1 || A) {
     Writer.startLine() << "\n";
@@ -604,9 +600,8 @@ static void dumpArchive(const Archive *Arc, ScopedPrinter &Writer) {
   for (auto &Child : Arc->children(Err)) {
     Expected<std::unique_ptr<Binary>> ChildOrErr = Child.getAsBinary();
     if (!ChildOrErr) {
-      if (auto E = isNotObjectErrorInvalidFileType(ChildOrErr.takeError())) {
+      if (auto E = isNotObjectErrorInvalidFileType(ChildOrErr.takeError()))
-        reportError(Arc->getFileName(), std::move(E));
+        reportError(std::move(E), Arc->getFileName());
-      }
       continue;
     }
     if (ObjectFile *Obj = dyn_cast<ObjectFile>(&*ChildOrErr.get()))
@@ -614,10 +609,10 @@ static void dumpArchive(const Archive *Arc, ScopedPrinter &Writer) {
     else if (COFFImportFile *Imp = dyn_cast<COFFImportFile>(&*ChildOrErr.get()))
       dumpCOFFImportFile(Imp, Writer);
     else
-      reportError(Arc->getFileName(), readobj_error::unrecognized_file_format);
+      reportError(readobj_error::unrecognized_file_format, Arc->getFileName());
   }
   if (Err)
-    reportError(Arc->getFileName(), std::move(Err));
+    reportError(std::move(Err), Arc->getFileName());
 }
 
 /// Dumps each object file in \a MachO Universal Binary;
@@ -627,9 +622,8 @@ static void dumpMachOUniversalBinary(const MachOUniversalBinary *UBinary,
     Expected<std::unique_ptr<MachOObjectFile>> ObjOrErr = Obj.getAsObjectFile();
     if (ObjOrErr)
       dumpObject(&*ObjOrErr.get(), Writer);
-    else if (auto E = isNotObjectErrorInvalidFileType(ObjOrErr.takeError())) {
+    else if (auto E = isNotObjectErrorInvalidFileType(ObjOrErr.takeError()))
-      reportError(UBinary->getFileName(), ObjOrErr.takeError());
+      reportError(ObjOrErr.takeError(), UBinary->getFileName());
-    }
     else if (Expected<std::unique_ptr<Archive>> AOrErr = Obj.getAsArchive())
       dumpArchive(&*AOrErr.get(), Writer);
   }
@@ -640,7 +634,7 @@ static void dumpWindowsResourceFile(WindowsResource *WinRes,
                                     ScopedPrinter &Printer) {
   WindowsRes::Dumper Dumper(WinRes, Printer);
   if (auto Err = Dumper.printData())
-    reportError(WinRes->getFileName(), std::move(Err));
+    reportError(std::move(Err), WinRes->getFileName());
 }
 
 
@@ -649,7 +643,7 @@ static void dumpInput(StringRef File, ScopedPrinter &Writer) {
   // Attempt to open the binary.
   Expected<OwningBinary<Binary>> BinaryOrErr = createBinary(File);
   if (!BinaryOrErr)
-    reportError(File, BinaryOrErr.takeError());
+    reportError(BinaryOrErr.takeError(), File);
   Binary &Binary = *BinaryOrErr.get().getBinary();
 
   if (Archive *Arc = dyn_cast<Archive>(&Binary))
@@ -664,7 +658,7 @@ static void dumpInput(StringRef File, ScopedPrinter &Writer) {
   else if (WindowsResource *WinRes = dyn_cast<WindowsResource>(&Binary))
     dumpWindowsResourceFile(WinRes, Writer);
   else
-    reportError(File, readobj_error::unrecognized_file_format);
+    reportError(readobj_error::unrecognized_file_format, File);
 
   CVTypes.Binaries.push_back(std::move(*BinaryOrErr));
 }

tools/llvm-readobj/llvm-readobj.h

@@ -22,17 +22,16 @@ namespace llvm {
 
   // Various helper functions.
   LLVM_ATTRIBUTE_NORETURN void reportError(Twine Msg);
-  void reportError(StringRef Input, Error Err); 
+  void reportError(Error Err, StringRef Input); 
   void reportWarning(Twine Msg);
   void reportWarning(StringRef Input, Error Err);
   void warn(llvm::Error Err);
   void error(std::error_code EC);
-  void error(llvm::Error EC);
 
   template <class T> T unwrapOrError(StringRef Input, Expected<T> EO) {
     if (EO)
       return *EO;
-    reportError(Input, EO.takeError());
+    reportError(EO.takeError(), Input);
     llvm_unreachable("reportError shouldn't return in this case");
   }
 } // namespace llvm