[BZ #3747]

2006-12-18  Jakub Jelinek  <jakub@redhat.com>
	[BZ #3747]
	* stdlib/jrand48_r.c (__jrand48_r): Make sure result is in the
	[-231 .. 231) range.
	* stdlib/tst-rand48.c (main): Fix expected values for 64-bit
	targets.
	* stdlib/tst-rand48-2.c: New test.
	* stdlib/Makefile (tests): Add tst-rand48-2.

4 files changed, 130 insertions, 17 deletions

diff --git a/stdlib/Makefile b/stdlib/Makefile
index 64a237f820..bfe679c2b1 100644
--- a/stdlib/Makefile
+++ b/stdlib/Makefile
@@ -67,7 +67,7 @@ tests		:= tst-strtol tst-strtod testmb testrand testsort testdiv   \
 		   tst-xpg-basename tst-random tst-random2 tst-bsearch	    \
 		   tst-limits tst-rand48 bug-strtod tst-setcontext	    \
 		   test-a64l tst-qsort tst-system testmb2 bug-strtod2	    \
-		   tst-atof1 tst-atof2 tst-strtod2 tst-strtod3
+		   tst-atof1 tst-atof2 tst-strtod2 tst-strtod3 tst-rand48-2
 
 include ../Makeconfig
 
diff --git a/stdlib/jrand48_r.c b/stdlib/jrand48_r.c
index 2383ae129e..39e8d090a6 100644
--- a/stdlib/jrand48_r.c
+++ b/stdlib/jrand48_r.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1995, 1997, 1998, 2001 Free Software Foundation, Inc.
+/* Copyright (C) 1995, 1997, 1998, 2001, 2006 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995.
 
@@ -30,7 +30,7 @@ __jrand48_r (xsubi, buffer, result)
     return -1;
 
   /* Store the result.  */
-  *result = ((xsubi[2] << 16) | xsubi[1]) & 0xffffffffl;
+  *result = (int32_t) ((xsubi[2] << 16) | xsubi[1]);
 
   return 0;
 }
diff --git a/stdlib/tst-rand48-2.c b/stdlib/tst-rand48-2.c
new file mode 100644
index 0000000000..3079b98839
--- /dev/null
+++ b/stdlib/tst-rand48-2.c
@@ -0,0 +1,113 @@
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+
+int
+main (void)
+{
+  time_t t = time (NULL);
+  int i, ret = 0;
+  double d;
+  long int l;
+  struct drand48_data data;
+  unsigned short int buf[3];
+
+  srand48 ((long int) t);
+  for (i = 0; i < 50; i++)
+    if ((d = drand48 ()) < 0.0 || d >= 1.0)
+      {
+        printf ("drand48 %d %g\n", i, d);
+        ret = 1;
+      }
+
+  srand48_r ((long int) t, &data);
+  for (i = 0; i < 50; i++)
+    if (drand48_r (&data, &d) != 0 || d < 0.0 || d >= 1.0)
+      {
+        printf ("drand48_r %d %g\n", i, d);
+        ret = 1;
+      }
+
+  buf[2] = (t & 0xffff0000) >> 16; buf[1] = (t & 0xffff); buf[0] = 0x330e;
+  for (i = 0; i < 50; i++)
+    if ((d = erand48 (buf)) < 0.0 || d >= 1.0)
+      {
+        printf ("erand48 %d %g\n", i, d);
+        ret = 1;
+      }
+
+  buf[2] = (t & 0xffff0000) >> 16; buf[1] = (t & 0xffff); buf[0] = 0x330e;
+  for (i = 0; i < 50; i++)
+    if (erand48_r (buf, &data, &d) != 0 || d < 0.0 || d >= 1.0)
+      {
+        printf ("erand48_r %d %g\n", i, d);
+        ret = 1;
+      }
+
+  srand48 ((long int) t);
+  for (i = 0; i < 50; i++)
+    if ((l = lrand48 ()) < 0 || l > INT32_MAX)
+      {
+        printf ("lrand48 %d %ld\n", i, l);
+        ret = 1;
+      }
+
+  srand48_r ((long int) t, &data);
+  for (i = 0; i < 50; i++)
+    if (lrand48_r (&data, &l) != 0 || l < 0 || l > INT32_MAX)
+      {
+        printf ("lrand48_r %d %ld\n", i, l);
+        ret = 1;
+      }
+
+  buf[2] = (t & 0xffff0000) >> 16; buf[1] = (t & 0xffff); buf[0] = 0x330e;
+  for (i = 0; i < 50; i++)
+    if ((l = nrand48 (buf)) < 0 || l > INT32_MAX)
+      {
+        printf ("nrand48 %d %ld\n", i, l);
+        ret = 1;
+      }
+
+  buf[2] = (t & 0xffff0000) >> 16; buf[1] = (t & 0xffff); buf[0] = 0x330e;
+  for (i = 0; i < 50; i++)
+    if (nrand48_r (buf, &data, &l) != 0 || l < 0 || l > INT32_MAX)
+      {
+        printf ("nrand48_r %d %ld\n", i, l);
+        ret = 1;
+      }
+
+  srand48 ((long int) t);
+  for (i = 0; i < 50; i++)
+    if ((l = mrand48 ()) < INT32_MIN || l > INT32_MAX)
+      {
+        printf ("mrand48 %d %ld\n", i, l);
+        ret = 1;
+      }
+
+  srand48_r ((long int) t, &data);
+  for (i = 0; i < 50; i++)
+    if (mrand48_r (&data, &l) != 0 || l < INT32_MIN || l > INT32_MAX)
+      {
+        printf ("mrand48_r %d %ld\n", i, l);
+        ret = 1;
+      }
+
+  buf[2] = (t & 0xffff0000) >> 16; buf[1] = (t & 0xffff); buf[0] = 0x330e;
+  for (i = 0; i < 50; i++)
+    if ((l = jrand48 (buf)) < INT32_MIN || l > INT32_MAX)
+      {
+        printf ("jrand48 %d %ld\n", i, l);
+        ret = 1;
+      }
+
+  buf[2] = (t & 0xffff0000) >> 16; buf[1] = (t & 0xffff); buf[0] = 0x330e;
+  for (i = 0; i < 50; i++)
+    if (jrand48_r (buf, &data, &l) != 0 || l < INT32_MIN || l > INT32_MAX)
+      {
+        printf ("jrand48_r %d %ld\n", i, l);
+        ret = 1;
+      }
+
+  return ret;
+}
diff --git a/stdlib/tst-rand48.c b/stdlib/tst-rand48.c
index fd2c4c1955..52e1b96afe 100644
--- a/stdlib/tst-rand48.c
+++ b/stdlib/tst-rand48.c
@@ -44,10 +44,10 @@ main (void)
     }
 
   l = mrand48 ();
-  if (l != 0xa28c1003l)
+  if (l != -0x5d73effdl)
     {
       printf ("mrand48() in line %d failed: expected %lx, seen %lx\n",
-	      __LINE__ - 4, 0xa28c1003l, l);
+	      __LINE__ - 4, -0x5d73effdl, l);
       result = 1;
     }
 
@@ -60,10 +60,10 @@ main (void)
     }
 
   l = mrand48 ();
-  if (l != 0x9e88f474l)
+  if (l != -0x61770b8cl)
     {
       printf ("mrand48() in line %d failed: expected %lx, seen %lx\n",
-	      __LINE__ - 4, 0x9e88f474l, l);
+	      __LINE__ - 4, -0x61770b8cl, l);
       result = 1;
     }
 
@@ -92,10 +92,10 @@ main (void)
     }
 
   l = mrand48 ();
-  if (l != 0xeb7a1fa3l)
+  if (l != -0x1485e05dl)
     {
       printf ("mrand48() in line %d failed: expected %lx, seen %lx\n",
-	      __LINE__ - 4, 0xeb7a1fa3l, l);
+	      __LINE__ - 4, -0x1485e05dl, l);
       result = 1;
     }
 
@@ -171,10 +171,10 @@ main (void)
     }
 
   l = mrand48 ();
-  if (l != 0xa28c1003l)
+  if (l != -0x5d73effdl)
     {
       printf ("mrand48() in line %d failed: expected %lx, seen %lx\n",
-	      __LINE__ - 4, 0xa28c1003l, l);
+	      __LINE__ - 4, -0x5d73effdl, l);
       result = 1;
     }
 
@@ -187,10 +187,10 @@ main (void)
     }
 
   l = mrand48 ();
-  if (l != 0x9e88f474l)
+  if (l != -0x61770b8cl)
     {
       printf ("mrand48() in line %d failed: expected %lx, seen %lx\n",
-	      __LINE__ - 4, 0x9e88f474l, l);
+	      __LINE__ - 4, -0x61770b8cl, l);
       result = 1;
     }
 
@@ -231,10 +231,10 @@ main (void)
     }
 
   l = mrand48 ();
-  if (l != 0xeb7a1fa3l)
+  if (l != -0x1485e05dl)
     {
       printf ("mrand48() in line %d failed: expected %lx, seen %lx\n",
-	      __LINE__ - 4, 0xeb7a1fa3l, l);
+	      __LINE__ - 4, -0x1485e05dl, l);
       result = 1;
     }
 
@@ -287,10 +287,10 @@ main (void)
     }
 
   l = jrand48 (xs);
-  if (l != 0xf568c7a0l)
+  if (l != -0xa973860l)
     {
       printf ("jrand48() in line %d failed: expected %lx, seen %lx\n",
-	      __LINE__ - 4, 0xf568c7a0l, l);
+	      __LINE__ - 4, -0xa973860l, l);
       result = 1;
     }