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-rw-r--r--sysdeps/posix/readv.c3
-rw-r--r--sysdeps/posix/sigwait.c1
-rw-r--r--sysdeps/posix/writev.c3
3 files changed, 5 insertions, 2 deletions
diff --git a/sysdeps/posix/readv.c b/sysdeps/posix/readv.c
index bde57b44fa..f0e78e6662 100644
--- a/sysdeps/posix/readv.c
+++ b/sysdeps/posix/readv.c
@@ -23,6 +23,7 @@
 #include <stdbool.h>
 #include <sys/param.h>
 #include <sys/uio.h>
+#include <errno.h>
 
 /* Read data from file descriptor FD, and put the result in the
    buffers described by VECTOR, which is a vector of COUNT `struct iovec's.
@@ -46,7 +47,7 @@ __libc_readv (int fd, const struct iovec *vector, int count)
       /* Check for ssize_t overflow.  */
       if (SSIZE_MAX - bytes < vector[i].iov_len)
 	{
-	  errno = EINVAL;
+	  __set_errno (EINVAL);
 	  return -1;
 	}
       bytes += vector[i].iov_len;
diff --git a/sysdeps/posix/sigwait.c b/sysdeps/posix/sigwait.c
index 1c54970898..f2be3225c4 100644
--- a/sysdeps/posix/sigwait.c
+++ b/sysdeps/posix/sigwait.c
@@ -80,6 +80,7 @@ __sigwait (const sigset_t *set, int *sig)
   *sig = was_sig;
   return was_sig == -1 ? -1 : 0;
 }
+libc_hidden_def (__sigwait)
 weak_alias (__sigwait, sigwait)
 
 
diff --git a/sysdeps/posix/writev.c b/sysdeps/posix/writev.c
index ae5ef1efb4..a347cc2eac 100644
--- a/sysdeps/posix/writev.c
+++ b/sysdeps/posix/writev.c
@@ -23,6 +23,7 @@
 #include <stdbool.h>
 #include <sys/param.h>
 #include <sys/uio.h>
+#include <errno.h>
 
 /* Write data pointed by the buffers described by VECTOR, which
    is a vector of COUNT `struct iovec's, to file descriptor FD.
@@ -46,7 +47,7 @@ __libc_writev (int fd, const struct iovec *vector, int count)
       /* Check for ssize_t overflow.  */
       if (SSIZE_MAX - bytes < vector[i].iov_len)
 	{
-	  errno = EINVAL;
+	  __set_errno (EINVAL);
 	  return -1;
 	}
       bytes += vector[i].iov_len;