Simplify the marking of invalid functions

Signed-off-by: Dimitar Dobrev <dpldobrev@protonmail.com>

src/CppParser/Parser.cpp

@@ -3140,29 +3140,6 @@ static bool IsInvalid(clang::Stmt* Body, std::unordered_set<clang::Stmt*>& Bodie
     return false;
 }
 
-std::stack<clang::Scope> Parser::GetScopesFor(clang::FunctionDecl* FD)
-{
-    using namespace clang;
-
-    std::stack<DeclContext*> Contexts;
-    DeclContext* DC = FD;
-    while (DC)
-    {
-        Contexts.push(DC);
-        DC = DC->getParent();
-    }
-    std::stack<Scope> Scopes;
-    while (!Contexts.empty())
-    {
-        Scope S(Scopes.empty() ? 0 : &Scopes.top(),
-            Scope::ScopeFlags::DeclScope, c->getDiagnostics());
-        S.setEntity(Contexts.top());
-        Scopes.push(S);
-        Contexts.pop();
-    }
-    return Scopes;
-}
-
 void Parser::MarkValidity(Function* F)
 {
     using namespace clang;
@@ -3177,12 +3154,8 @@ void Parser::MarkValidity(Function* F)
     SemaDiagnostics->Decl = FD;
     c->getSema().getDiagnostics().setClient(SemaDiagnostics.get(), false);
 
-    auto TUScope = c->getSema().TUScope;
-    std::stack<Scope> Scopes = GetScopesFor(FD);
-    c->getSema().TUScope = &Scopes.top();
     c->getSema().InstantiateFunctionDefinition(FD->getBeginLoc(), FD,
         /*Recursive*/true);
-    c->getSema().TUScope = TUScope;
     F->isInvalid = FD->isInvalidDecl();
     if (!F->isInvalid)
     {

src/CppParser/Parser.h

@@ -137,7 +137,6 @@ private:
     Parameter* WalkParameter(const clang::ParmVarDecl* PVD,
         const clang::SourceLocation& ParamStartLoc);
     void SetBody(const clang::FunctionDecl* FD, Function* F);
-    std::stack<clang::Scope> GetScopesFor(clang::FunctionDecl* FD);
     void MarkValidity(Function* F);
     void WalkFunction(const clang::FunctionDecl* FD, Function* F);
     int GetAlignAs(const clang::AlignedAttr* alignedAttr);