Merge branch 'develop' of github.com:ethereum/cpp-ethereum into develop

alethzero/MainWin.cpp

@@ -1517,6 +1517,7 @@ void Main::on_create_triggered()
 
 void Main::on_debugStep_triggered()
 {
+	if (ui->debugTimeline->value() < m_history.size()) {
 		auto l = m_history[ui->debugTimeline->value()].levels.size();
 		if ((ui->debugTimeline->value() + 1) < m_history.size() && m_history[ui->debugTimeline->value() + 1].levels.size() > l)
 		{
@@ -1527,6 +1528,7 @@ void Main::on_debugStep_triggered()
 		else
 			on_debugStepInto_triggered();
 	}
+}
 
 void Main::on_debugStepInto_triggered()
 {

libserpent/parser.cpp

@@ -150,10 +150,10 @@ Node treefy(std::vector<Node> stream) {
         else if (typ == RPAREN) {
             std::vector<Node> args;
             while (1) {
+                if (!oq.size()) err("Bracket without matching", tok.metadata);
                 if (toktype(oq.back()) == LPAREN) break;
                 args.push_back(oq.back());
                 oq.pop_back();
-                if (!oq.size()) err("Bracket without matching", tok.metadata);
             }
             oq.pop_back();
             args.push_back(oq.back());