commit e1df30fbc2e2167a982c0e77a7ebee28f4dd0800

Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>

Date:   Thu Jul 25 11:22:17 2019 -0300

    Get new entropy on each attempt __gen_tempname (BZ #15813)

    This is missing bit for fully fix BZ#15813 (the other two were fixed

    by 359653aaacad463).

    Checked on x86_64-linux-gnu.

            [BZ #15813]

            sysdeps/posix/tempname.c (__gen_tempname): get entrypy on each

            attempt.

diff --git a/sysdeps/posix/tempname.c b/sysdeps/posix/tempname.c

index 3d26f378021680ae..61d7a9f36d37abae 100644

--- a/sysdeps/posix/tempname.c

+++ b/sysdeps/posix/tempname.c

@@ -186,7 +186,6 @@ __gen_tempname (char *tmpl, int suffixlen, int flags, int kind)

 {

   int len;

   char *XXXXXX;

-  uint64_t value;

   unsigned int count;

   int fd = -1;

   int save_errno = errno;

@@ -218,13 +217,13 @@ __gen_tempname (char *tmpl, int suffixlen, int flags, int kind)

   /* This is where the Xs start.  */

   XXXXXX = &tmpl[len - 6 - suffixlen];

-  /* Get some more or less random data.  */

-  RANDOM_BITS (value);

-  value ^= (uint64_t)__getpid () << 32;

-

-  for (count = 0; count < attempts; value += 7777, ++count)

+  uint64_t pid = (uint64_t) __getpid () << 32;

+  for (count = 0; count < attempts; ++count)

     {

-      uint64_t v = value;

+      uint64_t v;

+      /* Get some more or less random data.  */

+      RANDOM_BITS (v);

+      v ^= pid;

       /* Fill in the random bits.  */

       XXXXXX[0] = letters[v % 62];