commit bash-20160520 snapshot

lib/sh/shmatch.c

@@ -92,7 +92,7 @@ sh_regmatch (string, pattern, flags)
   /* Store the parenthesized subexpressions in the array BASH_REMATCH.
      Element 0 is the portion that matched the entire regexp.  Element 1
      is the part that matched the first subexpression, and so on. */
-  unbind_variable ("BASH_REMATCH");
+  unbind_variable_noref ("BASH_REMATCH");
   rematch = make_new_array_variable ("BASH_REMATCH");
   amatch = array_cell (rematch);
 

lib/sh/tmpfile.c

@@ -114,6 +114,23 @@ get_tmpdir (flags)
   return tdir;
 }
 
+static void
+sh_seedrand ()
+{
+#if HAVE_RANDOM
+  int d;
+  static int seeded = 0;
+  if (seeded == 0)
+    {
+      struct timeval tv;
+  	      
+      gettimeofday (&tv, NULL);
+      srandom (tv.tv_sec ^ tv.tv_usec ^ (getpid () << 16) ^ (unsigned int)&d);
+      seeded = 1;
+    }
+#endif
+}
+
 char *
 sh_mktmpname (nameroot, flags)
      char *nameroot;
@@ -122,6 +139,7 @@ sh_mktmpname (nameroot, flags)
   char *filename, *tdir, *lroot;
   struct stat sb;
   int r, tdlen;
+  static int seeded = 0;
 
   filename = (char *)xmalloc (PATH_MAX + 1);
   tdir = get_tmpdir (flags);
@@ -137,6 +155,7 @@ sh_mktmpname (nameroot, flags)
       filename = NULL;
     }
 #else  /* !USE_MKTEMP */
+  sh_seedrand ();
   while (1)
     {
       filenum = (filenum << 1) ^
@@ -167,7 +186,7 @@ sh_mktmpfd (nameroot, flags, namep)
 {
   char *filename, *tdir, *lroot;
   int fd, tdlen;
-
+  
   filename = (char *)xmalloc (PATH_MAX + 1);
   tdir = get_tmpdir (flags);
   tdlen = strlen (tdir);
@@ -186,6 +205,7 @@ sh_mktmpfd (nameroot, flags, namep)
     *namep = filename;
   return fd;
 #else /* !USE_MKSTEMP */
+  sh_seedrand ();
   do
     {
       filenum = (filenum << 1) ^