Fix "fat arrow" functions that have no parameters.

diff --git a/Parser.ypp.in b/Parser.ypp.in
index 26d73c84bcf9852d25ce7ddcbaa822bb64bb0cbd..2a00d69ea19d4039875df99d337ed7d889e47b57 100644 (file)
--- a/Parser.ypp.in
+++ b/Parser.ypp.in
@@ -1546,7 +1546,7 @@ ArrowFunction
 
 ArrowParameters
     : BindingIdentifier { $$ = CYNew CYFunctionParameter(CYNew CYDeclaration($1)); }
 
 ArrowParameters
     : BindingIdentifier { $$ = CYNew CYFunctionParameter(CYNew CYDeclaration($1)); }

-    | CoverParenthesizedExpressionAndArrowParameterList { $$ = $1->expression_->Parameter(); if ($$ == NULL) CYERR(@1, "invalid parameter list"); }
+    | CoverParenthesizedExpressionAndArrowParameterList { if ($1 == NULL) $$ = NULL; else { $$ = $1->expression_->Parameter(); if ($$ == NULL) CYERR(@1, "invalid parameter list"); } }

     ;
 
 ConciseBody
     ;
 
 ConciseBody