1 files changed, 6 insertions, 2 deletions
diff --git a/include/clang/Basic/Attr.td b/include/clang/Basic/Attr.td
index f61ae7f15d..4d9aa5b9a3 100644
--- a/include/clang/Basic/Attr.td
+++ b/include/clang/Basic/Attr.td
@@ -602,15 +602,19 @@ def SharedLockFunction : InheritableAttr {
   let LateParsed = 1;
 }
 
+// The first argument is an integer or boolean value specifying the return value
+// of a successful lock acquisition.
 def ExclusiveTrylockFunction : InheritableAttr {
   let Spellings = ["exclusive_trylock_function"];
-  let Args = [VariadicExprArgument<"Args">];
+  let Args = [ExprArgument<"SuccessValue">, VariadicExprArgument<"Args">];
   let LateParsed = 1;
 }
 
+// The first argument is an integer or boolean value specifying the return value
+// of a successful lock acquisition.
 def SharedTrylockFunction : InheritableAttr {
   let Spellings = ["shared_trylock_function"];
-  let Args = [VariadicExprArgument<"Args">];
+  let Args = [ExprArgument<"SuccessValue">, VariadicExprArgument<"Args">];
   let LateParsed = 1;
 }