Finish cleaning up most of the error handling in libObject’s MachOUniversalBinary

and its clients to use the new llvm::Error model for error handling.

Changed getAsArchive() from ErrorOr<...> to Expected<...> so now all
interfaces there use the new llvm::Error model for return values.

In the two places it had if (!Parent) this is actually a program error so changed
from returning errorCodeToError(object_error::parse_failed) to calling
report_fatal_error() with a message.

In getObjectForArch() added error messages to its two llvm::Error return values
instead of returning errorCodeToError(object_error::arch_not_found) with no
error message.

For the llvm-obdump, llvm-nm and llvm-size clients since the only binary files in
Mach-O Universal Binaries that are supported are Mach-O files or archives with
Mach-O objects, updated their logic to generate an error when a slice contains
something like an ELF binary instead of ignoring it. And added a test case for
that.

The last error stuff to be cleaned up for libObject’s MachOUniversalBinary is
the use of errorOrToExpected(Archive::create(ObjBuffer)) which needs
Archive::create() to be changed from ErrorOr<...> to Expected<...> first,
which I’ll work on next. 

llvm-svn: 274079

1 files changed, 1 insertions, 0 deletions

diff --git a/llvm/tools/llvm-objdump/llvm-objdump.h b/llvm/tools/llvm-objdump/llvm-objdump.h
index 439018963cb..5b10ee87ca8 100644
--- a/llvm/tools/llvm-objdump/llvm-objdump.h
+++ b/llvm/tools/llvm-objdump/llvm-objdump.h
@@ -88,6 +88,7 @@ void PrintSectionHeaders(const object::ObjectFile *o);
 void PrintSectionContents(const object::ObjectFile *o);
 void PrintSymbolTable(const object::ObjectFile *o, StringRef ArchiveName,
                       StringRef ArchitectureName = StringRef());
+LLVM_ATTRIBUTE_NORETURN void error(Twine Message);
 LLVM_ATTRIBUTE_NORETURN void report_error(StringRef File, std::error_code EC);
 LLVM_ATTRIBUTE_NORETURN void report_error(StringRef File, llvm::Error E);
 LLVM_ATTRIBUTE_NORETURN void report_error(StringRef FileName,