Fix stdin/stdout/stderr for pre-M.
This wasn't an array of pointers, it was an array of structs.
Unfortunately we need a complete type to index into the struct for
stdin/stdout/stderr, so add a phony struct that matches the size and
alignment of `struct __sFILE`. This property is guaranteed by the
static_asserts in libc/bionic/struct_file_test.cpp.
Test: mma
Bug: http://b/30465923
Change-Id: I8ce851dd64a261703bb44f9b5cd23b7caff4dd68
diff --git a/libc/include/bits/struct_file.h b/libc/include/bits/struct_file.h
new file mode 100644
index 0000000..08e18a1
--- /dev/null
+++ b/libc/include/bits/struct_file.h
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef BITS_FILE_H
+#define BITS_FILE_H
+
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+
+struct __sFILE {
+#if defined(__LP64__)
+ char __private[152];
+#else
+ char __private[84];
+#endif
+} __attribute__((aligned(sizeof(void*))));
+
+__END_DECLS
+
+#endif /* BITS_FILE_H */