Helper to count the number of variables in a scope.

libsolidity/inlineasm/AsmAnalysis.cpp

@@ -349,9 +349,7 @@ bool AsmAnalyzer::operator()(Block const& _block)
 		if (!boost::apply_visitor(*this, s))
 			success = false;
 
-	for (auto const& identifier: scope(&_block).identifiers)
-		if (identifier.second.type() == typeid(Scope::Variable))
-			--m_stackHeight;
+	m_stackHeight -= scope(&_block).numberOfVariables();
 
 	int const stackDiff = m_stackHeight - initialStackHeight;
 	if (stackDiff != 0)

libsolidity/inlineasm/AsmScope.cpp

@@ -80,6 +80,15 @@ bool Scope::exists(string const& _name)
 		return false;
 }
 
+size_t Scope::numberOfVariables() const
+{
+	size_t count = 0;
+	for (auto const& identifier: identifiers)
+		if (identifier.second.type() == typeid(Scope::Variable))
+			count++;
+	return count;
+}
+
 bool Scope::insideFunction() const
 {
 	for (Scope const* s = this; s; s = s->superScope)

libsolidity/inlineasm/AsmScope.h

@@ -109,6 +109,8 @@ struct Scope
 	/// across function and assembly boundaries).
 	bool exists(std::string const& _name);
 
+	/// @returns the number of variables directly registered inside the scope.
+	size_t numberOfVariables() const;
 	/// @returns true if this scope is inside a function.
 	bool insideFunction() const;