[master] 8709deb83 Test coverage for VCL "weak" symbols

[Dridi Boukelmoune]

commit 8709deb830a99862e956817c750192f24f5bd313
Author: Dridi Boukelmoune <dridi.boukelmoune at gmail.com>
Date:   Thu Jun 4 11:56:52 2020 +0200

    Test coverage for VCL "weak" symbols
    
    Simply make sure we don't allow symbols starting with an underscore
    symbol.

diff --git a/bin/varnishtest/tests/v00019.vtc b/bin/varnishtest/tests/v00019.vtc
index e37751869..fc98616a6 100644
--- a/bin/varnishtest/tests/v00019.vtc
+++ b/bin/varnishtest/tests/v00019.vtc
@@ -77,3 +77,11 @@ varnish v1 -errvcl {Unknown token '--' when looking for INT} {
 		set resp.status = --200;
 	}
 }
+
+varnish v1 -errvcl "Syntax error" {
+	import debug;
+	backend be none;
+	sub vcl_init {
+		new _invalid = debug.obj();
+	}
+}