[ELF] Convert ELF.h to Expected<T>.
This has two advantages:
1) We slowly move away from ErrorOr to the new handling interface,
in the hope of having an uniform error handling in LLVM, eventually.
2) We're starting to have *meaningful* error messages for invalid
object ELF files, rather than a generic "parse error". At some point
we should include also the offset to improve the quality of the
diagnostic.
llvm-svn: 287081
diff --git a/llvm/tools/llvm-objdump/ELFDump.cpp b/llvm/tools/llvm-objdump/ELFDump.cpp
index e9e0bcf..2d2a5b5 100644
--- a/llvm/tools/llvm-objdump/ELFDump.cpp
+++ b/llvm/tools/llvm-objdump/ELFDump.cpp
@@ -25,8 +25,9 @@
typedef ELFFile<ELFT> ELFO;
outs() << "Program Header:\n";
auto ProgramHeaderOrError = o->program_headers();
- if (std::error_code EC = ProgramHeaderOrError.getError())
- report_fatal_error(EC.message());
+ if (!ProgramHeaderOrError)
+ report_fatal_error(
+ errorToErrorCode(ProgramHeaderOrError.takeError()).message());
for (const typename ELFO::Elf_Phdr &Phdr : *ProgramHeaderOrError) {
switch (Phdr.p_type) {
case ELF::PT_LOAD: