Core: raise exception when using local outside function

2 files changed, 19 insertions, 0 deletions

diff --git a/src/core/interpreter.h b/src/core/interpreter.h
index 801e24f..1ee02dd 100644
--- a/src/core/interpreter.h
+++ b/src/core/interpreter.h
@@ -304,6 +304,8 @@ public:
                     bool readonly=false,
                     const unsigned index=0)
   {
+    if(local_members.empty())
+      throw libbash::runtime_exception("Define local variables outside function scope");
     local_members.back()[name].reset(new variable(name, value, readonly, index));
   }
 
diff --git a/test/walker_test.cpp b/test/walker_test.cpp
index 4f87c26..e5b0583 100644
--- a/test/walker_test.cpp
+++ b/test/walker_test.cpp
@@ -100,3 +100,20 @@ TEST(brace_expansion, not_in_raw_string)
   bash_ast ast(input);
   EXPECT_THROW(ast.interpret_with(walker), libbash::unsupported_exception);
 }
+
+TEST(local_builtin, outside_function)
+{
+  interpreter walker;
+
+  std::string script = "local a";
+  std::istringstream input(script);
+  bash_ast ast(input);
+  try
+  {
+    ast.interpret_with(walker);
+  }
+  catch(libbash::runtime_exception& e)
+  {
+    EXPECT_STREQ(e.what(), "Define local variables outside function scope");
+  }
+}