vendor/llvm/llvm-trunk-r238337

1 files changed, 5 insertions, 3 deletions

diff --git a/lib/Option/Option.cpp b/lib/Option/Option.cpp
index cdc63c353f009..221414d79e779 100644
--- a/lib/Option/Option.cpp
+++ b/lib/Option/Option.cpp
@@ -35,9 +35,6 @@ Option::Option(const OptTable::Info *info, const OptTable *owner)
   }
 }
 
-Option::~Option() {
-}
-
 void Option::dump() const {
   llvm::errs() << "<";
   switch (getKind()) {
@@ -128,6 +125,11 @@ Arg *Option::accept(const ArgList &Args,
         Val += strlen(Val) + 1;
       }
     }
+
+    if (UnaliasedOption.getKind() == JoinedClass && !getAliasArgs())
+      // A Flag alias for a Joined option must provide an argument.
+      A->getValues().push_back("");
+
     return A;
   }
   case JoinedClass: {