When encountering an unknown file format, ObjectFile::createObjectFile should
politely report it instead of running into llvm_unreachable.
Also patch llvm-dwarfdump to actually check whether the file it's attempting to
dump is a valid object file.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173489 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Object/ObjectFile.cpp b/lib/Object/ObjectFile.cpp
index b14df9a..860c87b 100644
--- a/lib/Object/ObjectFile.cpp
+++ b/lib/Object/ObjectFile.cpp
@@ -33,6 +33,8 @@
sys::LLVMFileType type = sys::IdentifyFileType(Object->getBufferStart(),
static_cast<unsigned>(Object->getBufferSize()));
switch (type) {
+ case sys::Unknown_FileType:
+ return 0;
case sys::ELF_Relocatable_FileType:
case sys::ELF_Executable_FileType:
case sys::ELF_SharedObject_FileType:
@@ -52,7 +54,7 @@
case sys::COFF_FileType:
return createCOFFObjectFile(Object);
default:
- llvm_unreachable("Unknown Object File Type");
+ llvm_unreachable("Unexpected Object File Type");
}
}