Use the same algorithm for counting the number of words to sort as we

use to break up the list of words, so we're sure to get the same number.
Fixes Savannah bug #33125

4 files changed, 58 insertions, 65 deletions

diff --git a/ChangeLog b/ChangeLog
index 78b6b9e..b3fed57 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2011-05-02  Paul Smith  <psmith@gnu.org>
 
+	* function.c (func_sort): Use the same algorithm to count the
+	number of words we will get after the split, as we use to split.
+	Based on a patch from Matthias Hopf.  Fixes Savannah bug #33125.
+
 	* make.h: Make global variable stack_limit extern.
 	Fixes Savannah bug #32753.
 
diff --git a/function.c b/function.c
index 613b8ba..42a0193 100644
--- a/function.c
+++ b/function.c
@@ -706,7 +706,7 @@ func_words (char *o, char **argv, const char *funcname UNUSED)
   const char *word_iterator = argv[0];
   char buf[20];
 
-  while (find_next_token (&word_iterator, (unsigned int *) 0) != 0)
+  while (find_next_token (&word_iterator, NULL) != 0)
     ++i;
 
   sprintf (buf, "%d", i);
@@ -1133,21 +1133,14 @@ func_sort (char *o, char **argv, const char *funcname UNUSED)
 
   /* Find the maximum number of words we'll have.  */
   t = argv[0];
-  wordi = 1;
-  while (*t != '\0')
+  wordi = 0;
+  while ((p = find_next_token (&t, NULL)) != 0)
     {
-      char c = *(t++);
-
-      if (! isspace ((unsigned char)c))
-        continue;
-
+      ++t;
       ++wordi;
-
-      while (isspace ((unsigned char)*t))
-        ++t;
     }
 
-  words = xmalloc (wordi * sizeof (char *));
+  words = xmalloc ((wordi == 0 ? 1 : wordi) * sizeof (char *));
 
   /* Now assign pointers to each string in the array.  */
   t = argv[0];
diff --git a/tests/ChangeLog b/tests/ChangeLog
index 3fdf5ca..86c6789 100644
--- a/tests/ChangeLog
+++ b/tests/ChangeLog
@@ -1,3 +1,7 @@
+2011-05-02  Paul Smith  <psmith@gnu.org>
+
+	* scripts/functions/sort: Add a test for Savannah bug #33125.
+
 2011-04-17  David A. Wheeler  <dwheeler@dwheeler.com>
 
 	* scripts/features/shell_assignment: Regression for "!=" feature
diff --git a/tests/scripts/functions/sort b/tests/scripts/functions/sort
index d472102..b558910 100644
--- a/tests/scripts/functions/sort
+++ b/tests/scripts/functions/sort
@@ -1,55 +1,47 @@
-$description = "The following test creates a makefile to verify\n"
-              ."the ability of make to sort lists of object. Sort\n"
-              ."will also remove any duplicate entries. This will also\n"
-              ."be tested.";
-
-$details = "The make file is built with a list of object in a random order\n"
-          ."and includes some duplicates. Make should sort all of the elements\n"
-          ."remove all duplicates\n";
-
-open(MAKEFILE,"> $makefile");
-
-# The Contents of the MAKEFILE ...
-
-print MAKEFILE "foo := moon_light days \n"
-              ."foo1:= jazz\n"
-              ."bar := captured \n"
-              ."bar2 = boy end, has rise A midnight \n"
-              ."bar3:= \$(foo)\n"
-              ."s1  := _by\n"
-              ."s2  := _and_a\n"
-              ."t1  := \$(addsuffix \$(s1), \$(bar) )\n"
-              ."t2  := \$(addsuffix \$(s2), \$(foo1) )\n" 
-              ."t3  := \$(t2) \$(t2) \$(t2) \$(t2) \$(t2) \$(t2) \$(t2) \$(t2) \$(t2) \$(t2) \n"
-              ."t4  := \$(t3) \$(t3) \$(t3) \$(t3) \$(t3) \$(t3) \$(t3) \$(t3) \$(t3) \$(t3) \n"
-              ."t5  := \$(t4) \$(t4) \$(t4) \$(t4) \$(t4) \$(t4) \$(t4) \$(t4) \$(t4) \$(t4) \n"
-              ."t6  := \$(t5) \$(t5) \$(t5) \$(t5) \$(t5) \$(t5) \$(t5) \$(t5) \$(t5) \$(t5) \n"
-              ."t7  := \$(t6) \$(t6) \$(t6) \n"
-              ."p1  := \$(addprefix \$(foo1), \$(s2) )\n"
-              ."blank:= \n"
-              ."all:\n"
-              ."\t\@echo \$(sort \$(bar2) \$(foo)  \$(addsuffix \$(s1), \$(bar) ) \$(t2) \$(bar2) \$(bar3))\n"
-              ."\t\@echo \$(sort \$(blank) \$(foo) \$(bar2) \$(t1) \$(p1) )\n"
-              ."\t\@echo \$(sort \$(foo) \$(bar2) \$(t1) \$(t4) \$(t5) \$(t7) \$(t6) )\n";
-
-
-# END of Contents of MAKEFILE
-
-close(MAKEFILE);
-
-&run_make_with_options($makefile,"",&get_logfile);
-
-# Create the answer to what should be produced by this Makefile
-$answer = "A boy captured_by days end, has jazz_and_a midnight moon_light rise\n"
-         ."A boy captured_by days end, has jazz_and_a midnight moon_light rise\n"
-         ."A boy captured_by days end, has jazz_and_a midnight moon_light rise\n";
-
-&compare_output($answer,&get_logfile(1));
+#                                                                    -*-perl-*-
+
+$description = "The following test creates a makefile to verify
+the ability of make to sort lists of object. Sort
+will also remove any duplicate entries. This will also
+be tested.";
+
+$details = "The make file is built with a list of object in a random order
+and includes some duplicates. Make should sort all of the elements
+remove all duplicates\n";
+
+run_make_test('
+foo := moon_light days
+foo1:= jazz
+bar := captured 
+bar2 = boy end, has rise A midnight 
+bar3:= $(foo)
+s1  := _by
+s2  := _and_a
+t1  := $(addsuffix $(s1), $(bar) )
+t2  := $(addsuffix $(s2), $(foo1) )
+t3  := $(t2) $(t2) $(t2) $(t2) $(t2) $(t2) $(t2) $(t2) $(t2) $(t2) 
+t4  := $(t3) $(t3) $(t3) $(t3) $(t3) $(t3) $(t3) $(t3) $(t3) $(t3) 
+t5  := $(t4) $(t4) $(t4) $(t4) $(t4) $(t4) $(t4) $(t4) $(t4) $(t4) 
+t6  := $(t5) $(t5) $(t5) $(t5) $(t5) $(t5) $(t5) $(t5) $(t5) $(t5) 
+t7  := $(t6) $(t6) $(t6) 
+p1  := $(addprefix $(foo1), $(s2) )
+blank:= 
+all:
+	@echo $(sort $(bar2) $(foo)  $(addsuffix $(s1), $(bar) ) $(t2) $(bar2) $(bar3))
+	@echo $(sort $(blank) $(foo) $(bar2) $(t1) $(p1) )
+	@echo $(sort $(foo) $(bar2) $(t1) $(t4) $(t5) $(t7) $(t6) )
+',
+              '', 'A boy captured_by days end, has jazz_and_a midnight moon_light rise
+A boy captured_by days end, has jazz_and_a midnight moon_light rise
+A boy captured_by days end, has jazz_and_a midnight moon_light rise
+');
+
+
+# Test with non-space/tab whitespace.  Note that you can't see the
+# original bug except using valgrind.
+
+run_make_test("FOO = a b\tc\rd\fe \f \f \f \f \ff
+all: ; \@echo \$(words \$(sort \$(FOO)))\n",
+              '', "5\n");
 
 1;
-
-
-
-
-
-