[mach-o] Fix so that mach-o semantic errors return an error rather than assert

llvm-svn: 209469

1 files changed, 3 insertions, 1 deletions

diff --git a/lld/lib/ReaderWriter/MachO/MachONormalizedFileYAML.cpp b/lld/lib/ReaderWriter/MachO/MachONormalizedFileYAML.cpp
index 691a1bc1eea..4ce61fc9cb9 100644
--- a/lld/lib/ReaderWriter/MachO/MachONormalizedFileYAML.cpp
+++ b/lld/lib/ReaderWriter/MachO/MachONormalizedFileYAML.cpp
@@ -659,8 +659,10 @@ bool MachOYamlIOTaggedDocumentHandler::handledDocTag(llvm::yaml::IO &io,
     std::unique_ptr<lld::File> f = std::move(foe.get());
     file = f.release();
     return true;
+  } else {
+    io.setError(foe.getError().message());
+    return false;
   }
-  return false;
 }