flex_array: declare parts member to have incomplete type

The `parts' member of struct flex_array should evaluate to an incomplete
type so that sizeof() cannot be used and C99 does not require the
zero-length specification.

Signed-off-by: David Rientjes <rientjes@google.com>
Acked-by: Dave Hansen <dave@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/include/linux/flex_array.h b/include/linux/flex_array.h
index 23c1ec7..603160d 100644 (file)
--- a/include/linux/flex_array.h
+++ b/include/linux/flex_array.h
@@ -21,7 +21,7 @@ struct flex_array {
                struct {
                        int element_size;
                        int total_nr_elements;
-                       struct flex_array_part *parts[0];
+                       struct flex_array_part *parts[];
                };
                /*
                 * This little trick makes sure that