tests added for new capture-by-reference closure semantics & errors

testing/btest/language/closure-binding-errors.zeek

@@ -0,0 +1,21 @@
+# @TEST-EXEC-FAIL: zeek -b %INPUT >out
+# @TEST-EXEC: TEST_DIFF_CANONIFIER=$SCRIPTS/diff-remove-abspath btest-diff .stderr
+
+global c: string;
+type t: addr;
+
+event zeek_init()
+	{
+	local a = 3;
+	local b = "hi there";
+
+	local f1 = function[a]() { print "no a!"; };
+	local f2 = function[a2](a2: addr) { print a2; };
+	local f3 = function[a]() { print b; };
+	local f4 = function[a, b]() { print b; };
+	local f5 = function[b, b]() { print b; };
+	local f6 = function() { print c; };	# should be okay
+	local f7 = function[c]() { print c; };
+	local f8 = function[t]() { local t2: t; };
+	local f9 = function[a]() { local a = 4; };	# error due to shadowing
+	}