rustc: Fix a bug in cdir attribute parsing

The first attribute of the first mod was being applied to every mod.

src/comp/syntax/parse/parser.rs

@@ -2515,9 +2515,11 @@ fn parse_crate_directives(p: parser, term: token::token,
     }
 
     let cdirs: [@ast::crate_directive] = [];
+    let first_outer_attr = first_outer_attr;
     while p.peek() != term {
         let cdir = @parse_crate_directive(p, first_outer_attr);
         cdirs += [cdir];
+        first_outer_attr = [];
     }
     ret cdirs;
 }

src/test/run-pass/dupe-first-attr.rc

@@ -0,0 +1,11 @@
+// Regression test for a problem with the first mod attribute
+// being applied to every mod
+
+#[cfg(target_os = "linux")]
+mod hello;
+
+#[cfg(target_os = "macos")]
+mod hello;
+
+#[cfg(target_os = "win32")]
+mod hello;