diff -r 218d28dbcf0b tcc.c
--- a/tcc.c	Fri Nov 16 12:16:14 2007 +0800
+++ b/tcc.c	Sat Nov 24 13:10:54 2007 +0100
@@ -3264,6 +3264,9 @@ static int macro_subst_tok(TokenString *
                           get_tok_str(s->v, 0));
                 tok_str_new(&str);
                 parlevel = 0;
+                /* XXX: hack to avoid an endless loop in -E (preprocess) mode */
+                int saved_parse_flags = parse_flags;
+                parse_flags &= ~PARSE_FLAG_LINEFEED;
                 /* NOTE: non zero sa->t indicates VA_ARGS */
                 while ((parlevel > 0 || 
                         (tok != ')' && 
@@ -3276,6 +3279,7 @@ static int macro_subst_tok(TokenString *
                     tok_str_add2(&str, tok, tok_flags, &tokc);
                     next_nomacro();
                 }
+                parse_flags = saved_parse_flags;
                 tok_str_add(&str, 0, 0);
                 sym_push2(&args, sa->v & ~SYM_FIELD, sa->type.t, (int)str.str);
                 sa = sa->next;