5 files changed, 13 insertions, 5 deletions

diff --git a/coreutils/fsync.c b/coreutils/fsync.c
index f00803c5b..53900f8d2 100644
--- a/coreutils/fsync.c
+++ b/coreutils/fsync.c
@@ -7,6 +7,9 @@
  * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
  */
 #include "libbb.h"
+#ifndef O_NOATIME
+# define O_NOATIME 0
+#endif
 
 /* This is a NOFORK applet. Be very careful! */
 
diff --git a/coreutils/md5_sha1_sum.c b/coreutils/md5_sha1_sum.c
index a64026d3d..3d50bb0f5 100644
--- a/coreutils/md5_sha1_sum.c
+++ b/coreutils/md5_sha1_sum.c
@@ -101,8 +101,10 @@ int md5_sha1_sum_main(int argc UNUSED_PARAM, char **argv)
         unsigned flags;
         /*hash_algo_t hash_algo = applet_name[3];*/
 
-        if (ENABLE_FEATURE_MD5_SHA1_SUM_CHECK)
-                flags = getopt32(argv, "scw");
+        if (ENABLE_FEATURE_MD5_SHA1_SUM_CHECK) {
+                /* -b "binary", -t "text" are ignored (shaNNNsum compat) */
+                flags = getopt32(argv, "scwbt");
+        }
         else optind = 1;
         argv += optind;
         //argc -= optind;
diff --git a/coreutils/tail.c b/coreutils/tail.c
index 0be166315..c9d86f459 100644
--- a/coreutils/tail.c
+++ b/coreutils/tail.c
@@ -241,7 +241,8 @@ int tail_main(int argc, char **argv)
                                                 } while (nwrite);
                                         }
                                 }
-                                xwrite(STDOUT_FILENO, buf + nread - nwrite, nwrite);
+                                if (nwrite > 0)
+                                        xwrite(STDOUT_FILENO, buf + nread - nwrite, nwrite);
                         } else if (count) {
                                 if (COUNT_BYTES) {
                                         taillen += nread;
diff --git a/coreutils/touch.c b/coreutils/touch.c
index 3f7b265bd..dceb7c1cc 100644
--- a/coreutils/touch.c
+++ b/coreutils/touch.c
@@ -104,7 +104,7 @@ int touch_main(int argc UNUSED_PARAM, char **argv)
         }
 
         do {
-                if (utimes(*argv, reference_file ? timebuf : NULL) != 0) {
+                if (utimes(*argv, (reference_file || date_str) ? timebuf : NULL) != 0) {
                         if (errno == ENOENT) { /* no such file */
                                 if (opts) { /* creation is disabled, so ignore */
                                         continue;
@@ -113,7 +113,7 @@ int touch_main(int argc UNUSED_PARAM, char **argv)
                                 fd = open(*argv, O_RDWR | O_CREAT, 0666);
                                 if (fd >= 0) {
                                         xclose(fd);
-                                        if (reference_file)
+                                        if (reference_file || date_str)
                                                 utimes(*argv, timebuf);
                                         continue;
                                 }
diff --git a/coreutils/wc.c b/coreutils/wc.c
index 08f3c2dc4..711684225 100644
--- a/coreutils/wc.c
+++ b/coreutils/wc.c
@@ -88,6 +88,8 @@ int wc_main(int argc UNUSED_PARAM, char **argv)
         if (!argv[0]) {
                 *--argv = (char *) bb_msg_standard_input;
                 fname_fmt = "\n";
+        }
+        if (!argv[1]) { /* zero or one filename? */
                 if (!((print_type-1) & print_type)) /* exactly one option? */
                         start_fmt = "%"COUNT_FMT;
         }