Make it an error for a /*...*/ comment to contain /*

Fixes #655



git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@4627 d4fa192b-c00b-0410-8231-f00ffab90ce4

lib/libvcl/vcc_token.c

@@ -355,6 +355,15 @@ vcc_Lexer(struct tokenlist *tl, struct source *sp)
 		/* Skip C-style comments */
 		if (*p == '/' && p[1] == '*') {
 			for (q = p + 2; q < sp->e; q++) {
+				if (*q == '/' && q[1] == '*') {
+					vsb_printf(tl->sb,
+					    "/* ... */ comment contains /*\n");
+					vcc_AddToken(tl, EOI, p, p + 2);
+					vcc_ErrWhere(tl, tl->t);
+					vcc_AddToken(tl, EOI, q, q + 2);
+					vcc_ErrWhere(tl, tl->t);
+					return;
+				}
 				if (*q == '*' && q[1] == '/') {
 					p = q + 2;
 					break;