shaN: code shrink

function                                             old     new   delta
init512_lo                                            32      40      +8
init256                                               32      40      +8
sha256_begin                                          42      28     -14
sha512_begin                                          81      53     -28
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/2 up/down: 16/-42)            Total: -26 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/include/libbb.h b/include/libbb.h
index f406fc6f1..d05b2d48a 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -1514,7 +1514,7 @@ void FAST_FUNC read_base64(FILE *src_stream, FILE *dst_stream, int flags);
 
 typedef struct sha1_ctx_t {
         uint32_t hash[8];    /* 5, +3 elements for sha256 */
-        uint64_t total64;
+        uint64_t total64;    /* must be directly after hash[] */
         uint8_t wbuffer[64]; /* NB: always correctly aligned for uint64_t */
         void (*process_block)(struct sha1_ctx_t*) FAST_FUNC;
 } sha1_ctx_t;
@@ -1527,7 +1527,7 @@ void sha256_begin(sha256_ctx_t *ctx) FAST_FUNC;
 #define sha256_end sha1_end
 typedef struct sha512_ctx_t {
         uint64_t hash[8];
-        uint64_t total64[2];
+        uint64_t total64[2];  /* must be directly after hash[] */
         uint8_t wbuffer[128]; /* NB: always correctly aligned for uint64_t */
 } sha512_ctx_t;
 void sha512_begin(sha512_ctx_t *ctx) FAST_FUNC;