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libbb: introduce kernel-style BUILD_BUG_ON()

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2015-10-13 14:50:20 +02:00
parent f7ad927c20
commit ab3964db4e
9 changed files with 20 additions and 39 deletions
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7
networking/ftpgetput.c
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@@ -62,9 +62,6 @@ struct globals {
} 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 @@ struct BUG_G_too_big {
#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;