diff --git a/toys/other/shred.c b/toys/other/shred.c
index 4e56ce4924a3755e7eacfba66dc192ecdecd01d8..964ce7d659f07c1a26b7e195fc3b3c53dae5497f 100644
--- a/toys/other/shred.c
+++ b/toys/other/shred.c
@@ -99,6 +99,6 @@ void shred_main(void)
       pos += throw;
     }
     if (toys.optflags & FLAG_u)
-      if (unlink(*try) && unlink(*try)) perror_msg("unlink '%s'", *try);
+      if (unlink(*try)) perror_msg("unlink '%s'", *try);
   }
 }
diff --git a/toys/posix/pwd.c b/toys/posix/pwd.c
index d0842bdbdc92cd8082ce60ef571bf2b7bae76805..45ca89b547075b5e6ab2298461f2163284beddee 100644
--- a/toys/posix/pwd.c
+++ b/toys/posix/pwd.c
@@ -46,7 +46,7 @@ void pwd_main(void)
   } else s = NULL;
 
   // If -L didn't give us a valid path, use cwd.
-  if (!s && (s = pwd)) perror_exit("xgetcwd");
+  if (!s && !(s = pwd)) perror_exit("xgetcwd");
   xprintf("%s\n", s);
 
   if (CFG_TOYBOX_FREE) free(pwd);
diff --git a/toys/posix/split.c b/toys/posix/split.c
index ea0fb7db9a0227991cf172bc3b2e9db63aa35948..0da8da6aa8c2c2d396b3d42fe46f2b39943859f5 100644
--- a/toys/posix/split.c
+++ b/toys/posix/split.c
@@ -8,7 +8,7 @@
  * - should splitting an empty file produce an empty outfile? (Went with "no".)
  * - permissions on output file
 
-USE_SPLIT(NEWTOY(split, ">2a#<1=2>9b#<1l#<1[!b]", TOYFLAG_USR|TOYFLAG_BIN))
+USE_SPLIT(NEWTOY(split, ">2a#<1=2>9b#<1l#<1[!bl]", TOYFLAG_USR|TOYFLAG_BIN))
 
 config SPLIT
   bool "split"
diff --git a/toys/posix/tee.c b/toys/posix/tee.c
index 60e7a33fe564ae294a3828eecac91736ced469ab..63dda31f04e54c1900281030988b017632648168 100644
--- a/toys/posix/tee.c
+++ b/toys/posix/tee.c
@@ -24,6 +24,7 @@ config TEE
 
 GLOBALS(
   void *outputs;
+  int out;
 )
 
 struct fd_list {