libbb: introduce kernel-style BUILD_BUG_ON()
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/networking/ftpgetput.c b/networking/ftpgetput.c
index 8283366..b398bc8 100644
--- a/networking/ftpgetput.c
+++ b/networking/ftpgetput.c
@@ -62,9 +62,6 @@
} FIX_ALIASING;
#define G (*(struct globals*)&bb_common_bufsiz1)
enum { BUFSZ = COMMON_BUFSIZE - offsetof(struct globals, buf) };
-struct BUG_G_too_big {
- char BUG_G_too_big[sizeof(G) <= COMMON_BUFSIZE ? 1 : -1];
-};
#define user (G.user )
#define password (G.password )
#define lsa (G.lsa )
@@ -72,7 +69,9 @@
#define verbose_flag (G.verbose_flag )
#define do_continue (G.do_continue )
#define buf (G.buf )
-#define INIT_G() do { } while (0)
+#define INIT_G() do { \
+ BUILD_BUG_ON(sizeof(G) > COMMON_BUFSIZE); \
+} while (0)
static void ftp_die(const char *msg) NORETURN;