Fix overloaded static functions in SemaCodeComplete

https://bugs.llvm.org/show_bug.cgi?id=33904
Happens when static function is accessed via the class variable. That leads to incorrect overloads number because the variable is considered as the first argument.

struct Bar {
  static void foo(); static void foo(int);
};

int main() {
  Bar b;
  b.foo(/*complete here*/); // did not work before
  Bar::foo(/*complete here*/); // worked fine
}

Patch by Ivan Donchevskii!

Differential Revision: https://reviews.llvm.org/D36390

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@316646 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 3 insertions, 1 deletions

diff --git a/lib/Sema/SemaCodeComplete.cpp b/lib/Sema/SemaCodeComplete.cpp
index 06246d469f..a0d8c9941e 100644
--- a/lib/Sema/SemaCodeComplete.cpp
+++ b/lib/Sema/SemaCodeComplete.cpp
@@ -4396,9 +4396,11 @@ void Sema::CodeCompleteCall(Scope *S, Expr *Fn, ArrayRef<Expr *> Args) {
     ArgExprs.append(Args.begin(), Args.end());
     UnresolvedSet<8> Decls;
     Decls.append(UME->decls_begin(), UME->decls_end());
+    const bool FirstArgumentIsBase = !UME->isImplicitAccess() && UME->getBase();
     AddFunctionCandidates(Decls, ArgExprs, CandidateSet, TemplateArgs,
                           /*SuppressUsedConversions=*/false,
-                          /*PartialOverloading=*/true);
+                          /*PartialOverloading=*/true,
+                          FirstArgumentIsBase);
   } else {
     FunctionDecl *FD = nullptr;
     if (auto MCE = dyn_cast<MemberExpr>(NakedFn))