Update from Gnulib

This incorporates:
2020-02-23 use 'restrict'
* lib/careadlinkat.h, lib/md5.h, lib/sha1.h, lib/sha256.h:
* lib/sha512.h, lib/strftime.h, lib/string.in.h, m4/nstrftime.m4:
Copy from Gnulib.
* m4/gnulib-comp.m4: Regenerate.

1 files changed, 4 insertions, 3 deletions

diff --git a/lib/sha1.h b/lib/sha1.h
index 2c9c2d4a5e2..b76788487c3 100644
--- a/lib/sha1.h
+++ b/lib/sha1.h
@@ -71,20 +71,21 @@ extern void sha1_process_bytes (const void *buffer, size_t len,
    in first 20 bytes following RESBUF.  The result is always in little
    endian byte order, so that a byte-wise output yields to the wanted
    ASCII representation of the message digest.  */
-extern void *sha1_finish_ctx (struct sha1_ctx *ctx, void *resbuf);
+extern void *sha1_finish_ctx (struct sha1_ctx *ctx, void *restrict resbuf);
 
 
 /* Put result from CTX in first 20 bytes following RESBUF.  The result is
    always in little endian byte order, so that a byte-wise output yields
    to the wanted ASCII representation of the message digest.  */
-extern void *sha1_read_ctx (const struct sha1_ctx *ctx, void *resbuf);
+extern void *sha1_read_ctx (const struct sha1_ctx *ctx, void *restrict resbuf);
 
 
 /* Compute SHA1 message digest for LEN bytes beginning at BUFFER.  The
    result is always in little endian byte order, so that a byte-wise
    output yields to the wanted ASCII representation of the message
    digest.  */
-extern void *sha1_buffer (const char *buffer, size_t len, void *resblock);
+extern void *sha1_buffer (const char *buffer, size_t len,
+                          void *restrict resblock);
 
 # endif
 /* Compute SHA1 message digest for bytes read from STREAM.