Fix USE/EXEC error check

2016-12-23 17:18:43 +09:00
parent 0440c33184
commit f617b08def
1 changed files with 10 additions and 0 deletions
--- a/SMILEBASIC/parser.d
+++ b/SMILEBASIC/parser.d
@@ -1111,6 +1111,11 @@ class Parser
                {
                    lex.popFront();
                    auto expr = expression();
+                    if (!expr)
+                    {
+                        syntaxError();
+                        return null;
+                    }
                    return new Use(expr, lex.location);
                }
                break;
@@ -1118,6 +1123,11 @@ class Parser
                {
                    lex.popFront();
                    auto expr = expression();
+                    if (!expr)
+                    {
+                        syntaxError();
+                        return null;
+                    }
                    return new Exec(expr, lex.location);
                }
                break;