In C++, an empty parameter list indicates a function that takes no parameters.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57646 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Sema/SemaType.cpp b/lib/Sema/SemaType.cpp
index 209a00398801ea213d27c4b72440b2589ccabb35..a9e8b0117d97b1bb7db2713ea47792699578b87d 100644 (file)
--- a/lib/Sema/SemaType.cpp
+++ b/lib/Sema/SemaType.cpp
@@ -406,8 +406,14 @@ QualType Sema::GetTypeForDeclarator(Declarator &D, Scope *S) {
       }
         
       if (FTI.NumArgs == 0) {
-        // Simple void foo(), where the incoming T is the result type.
-        T = Context.getFunctionTypeNoProto(T);
+        if (getLangOptions().CPlusPlus) {
+          // C++ 8.3.5p2: If the parameter-declaration-clause is empty, the
+          // function takes no arguments.
+          T = Context.getFunctionType(T, NULL, 0, FTI.isVariadic);
+        } else {
+          // Simple void foo(), where the incoming T is the result type.
+          T = Context.getFunctionTypeNoProto(T);
+        }
       } else if (FTI.ArgInfo[0].Param == 0) {
         // C99 6.7.5.3p3: Reject int(x,y,z) when it's not a function definition.
         Diag(FTI.ArgInfo[0].IdentLoc, diag::err_ident_list_in_fn_declaration);