[patch] bash-3.0-random.patch

bash-3.0-random.patch (text/plain), 2.20 KB, created by S.Caglar Onur on 2005-01-12 10:04:13 UTC

diff -urb bash.orig/config.h.in bash/config.h.in
--- bash.orig/config.h.in	2003-09-22 14:42:35.000000000 +0200
+++ bash/config.h.in	2003-09-28 00:27:15.000000000 +0200
@@ -606,6 +606,9 @@
 /* Define if you have the putenv function.  */
 #undef HAVE_PUTENV
 
+/* Define if you have the random function.  */
+#undef HAVE_RANDOM
+
 /* Define if you have the readlink function. */
 #undef HAVE_READLINK
 
@@ -696,6 +699,9 @@
 /* Define if you have the strsignal function or macro. */
 #undef HAVE_STRSIGNAL
 
+/* Define if you have the srandom function.  */
+#undef HAVE_SRANDOM
+
 /* Define if you have the sysconf function. */
 #undef HAVE_SYSCONF
 
diff -urb bash.orig/variables.c bash/variables.c
--- bash.orig/variables.c	2003-07-31 16:28:57.000000000 +0200
+++ bash/variables.c	2003-09-28 00:27:15.000000000 +0200
@@ -1098,16 +1098,22 @@
 static unsigned long rseed = 1;
 static int last_random_value;
 
-/* A linear congruential random number generator based on the example
-   one in the ANSI C standard.  This one isn't very good, but a more
-   complicated one is overkill. */
+/* Use the random number genrator provided by the standard C library,
+   else use a linear congruential random number generator based on the
+   ANSI C standard.  This one isn't very good (the values are alternately
+   odd and even, for example), but a more complicated one is overkill. */
 
 /* Returns a pseudo-random number between 0 and 32767. */
 static int
 brand ()
 {
+#if defined(HAVE_RANDOM)
+  rseed = (unsigned int) (labs(random()) & 32767);
+  return rseed;
+#else
   rseed = rseed * 1103515245 + 12345;
   return ((unsigned int)((rseed >> 16) & 32767));	/* was % 32768 */
+#endif
 }
 
 /* Set the random number generator seed to SEED. */
@@ -1115,8 +1121,12 @@
 sbrand (seed)
      unsigned long seed;
 {
+#if defined(HAVE_SRANDOM)
+  srandom(seed);
+#else
   rseed = seed;
   last_random_value = 0;
+#endif
 }
 
 static SHELL_VAR *
--- bash/configure.in~	2004-03-02 00:04:29.000000000 +0100
+++ bash/configure.in	2004-03-02 00:05:48.000000000 +0100
@@ -667,6 +667,9 @@
 
 AC_FUNC_MKTIME
 
+dnl checks for random functions
+AC_CHECK_FUNCS(random srandom)
+
 dnl
 dnl Checks for lib/intl and related code (uses some of the output from
 dnl AM_GNU_GETTEXT)