Correct ENUM handling in object constructors

Discussed with phk@.  Fix confirmed by geoff@.

Fixes #1844.

lib/libvcc/vcc_action.c

@@ -203,9 +203,14 @@ parse_new(struct vcc *tl)
 	s_obj = p;
 	p += strlen(p) + 1;
 	s_init = p;
-	while (p[0] != '\0' || p[1] != '\0')
+	/*
+	 * Check for the end marked (\0\0) followed by s(truct) to avoid
+	 * matching an ENUM half-way through and generating illegal C code.
+	 */
+	while (p[0] != '\0' || p[1] != '\0' || p[2] != 's')
 		p++;
 	p += 2;
+	AZ(strncmp(p, "struct vmod_", 12));
 	s_struct = p;
 	p += strlen(p) + 1;
 	s_fini = p + strlen(p) + 1;

lib/libvmod_debug/vmod.vcc

@@ -71,7 +71,7 @@ $Function BACKEND no_backend()
 
 Fails at backend selection
 
-$Object obj(STRING)
+$Object obj(STRING, ENUM { one, two, three } number="one")
 
 Test object
 

lib/libvmod_debug/vmod_debug_obj.c

@@ -43,13 +43,14 @@ struct vmod_debug_obj {
 
 VCL_VOID
 vmod_obj__init(VRT_CTX, struct vmod_debug_obj **op,
-    const char *vcl_name, VCL_STRING s)
+    const char *vcl_name, VCL_STRING s, VCL_ENUM e)
 {
 	struct vmod_debug_obj *o;
 
 	CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
 	(void)vcl_name;
 	(void)s;
+	(void)e;
 	AN(op);
 	AZ(*op);
 	ALLOC_OBJ(o, VMOD_DEBUG_OBJ_MAGIC);