Fixed a crash when dealing with an empty method name in the ObjC runtime.

I've filed a bug covering better unit testing of our runtime metadata reader, which will allow this to be testable.. 

<rdar://problem/31793264>

llvm-svn: 301461

1 files changed, 6 insertions, 1 deletions

diff --git a/lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCDeclVendor.cpp b/lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCDeclVendor.cpp
index 07b4ae5e0ad..e99fd74a352 100644
--- a/lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCDeclVendor.cpp
+++ b/lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCDeclVendor.cpp
@@ -355,9 +355,14 @@ public:
       }
     }
 
+    clang::IdentifierInfo **identifier_infos = selector_components.data();
+    if (!identifier_infos) {
+      return NULL;
+    }
+
     clang::Selector sel = ast_ctx.Selectors.getSelector(
         is_zero_argument ? 0 : selector_components.size(),
-        selector_components.data());
+        identifier_infos);
 
     clang::QualType ret_type =
         ClangUtil::GetQualType(type_realizer_sp->RealizeType(