Fail in new_stdio_reader when libc.fopen fails.

1 files changed, 3 insertions, 2 deletions

diff --git a/src/lib/_io.rs b/src/lib/_io.rs
index bbf5550d5c5..f285f6c85d7 100644
--- a/src/lib/_io.rs
+++ b/src/lib/_io.rs
@@ -20,8 +20,9 @@ fn new_stdio_reader(str path) -> stdio_reader {
             os.libc.fclose(f);
         }
     }
-    ret stdio_FILE_reader(os.libc.fopen(_str.buf(path),
-                                        _str.buf("r")));
+    auto FILE = os.libc.fopen(_str.buf(path), _str.buf("r"));
+    check (FILE as uint != 0u);
+    ret stdio_FILE_reader(FILE);
 }