Merge rkalimullin@bk-internal.mysql.com:/home/bk/mysql-4.1

into  mysql.com:/usr/home/ram/work/mysql-4.1-maint


mysql-test/r/func_time.result:
  Auto merged
mysql-test/t/func_time.test:
  Auto merged
sql/item_cmpfunc.cc:
  Auto merged

8 files changed, 88 insertions, 22 deletions

diff --git a/client/mysql.cc b/client/mysql.cc
index f9ca9d4f829..c9ebf7d09f5 100644
--- a/client/mysql.cc
+++ b/client/mysql.cc
@@ -2629,7 +2629,7 @@ com_connect(String *buffer, char *line)
   bzero(buff, sizeof(buff));
   if (buffer)
   {
-    strmov(buff, line);
+    strmake(buff, line, sizeof(buff) - 1);
     tmp= get_arg(buff, 0);
     if (tmp && *tmp)
     {
@@ -2743,7 +2743,7 @@ com_use(String *buffer __attribute__((unused)), char *line)
   char *tmp, buff[FN_REFLEN + 1];
 
   bzero(buff, sizeof(buff));
-  strmov(buff, line);
+  strmake(buff, line, sizeof(buff) - 1);
   tmp= get_arg(buff, 0);
   if (!tmp || !*tmp)
   {
diff --git a/mysql-test/r/func_time.result b/mysql-test/r/func_time.result
index 97dd8e243b2..6f41855f609 100644
--- a/mysql-test/r/func_time.result
+++ b/mysql-test/r/func_time.result
@@ -694,6 +694,18 @@ t1	CREATE TABLE `t1` (
   `from_unixtime(1) + 0` double(23,6) default NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 drop table t1;
+SET NAMES latin1;
+SET character_set_results = NULL;
+SHOW VARIABLES LIKE 'character_set_results';
+Variable_name	Value
+character_set_results	
+CREATE TABLE testBug8868 (field1 DATE, field2 VARCHAR(32) CHARACTER SET BINARY);
+INSERT INTO testBug8868 VALUES ('2006-09-04', 'abcd');
+SELECT DATE_FORMAT(field1,'%b-%e %l:%i%p') as fmtddate, field2 FROM testBug8868;
+fmtddate	field2
+Sep-4 12:00AM	abcd
+DROP TABLE testBug8868;
+SET NAMES DEFAULT;
 (select time_format(timediff(now(), DATE_SUB(now(),INTERVAL 5 DAY)),'%H') As H)
 union
 (select time_format(timediff(now(), DATE_SUB(now(),INTERVAL 5 DAY)),'%H') As H);
diff --git a/mysql-test/t/func_time.test b/mysql-test/t/func_time.test
index 04bfc741d1c..714379d0fb3 100644
--- a/mysql-test/t/func_time.test
+++ b/mysql-test/t/func_time.test
@@ -369,6 +369,25 @@ show create table t1;
 drop table t1;
 
 #
+# 21913: DATE_FORMAT() Crashes mysql server if I use it through
+#        mysql-connector-j driver.
+#
+
+SET NAMES latin1;
+SET character_set_results = NULL;
+SHOW VARIABLES LIKE 'character_set_results';
+
+CREATE TABLE testBug8868 (field1 DATE, field2 VARCHAR(32) CHARACTER SET BINARY);
+INSERT INTO testBug8868 VALUES ('2006-09-04', 'abcd');
+
+SELECT DATE_FORMAT(field1,'%b-%e %l:%i%p') as fmtddate, field2 FROM testBug8868;
+
+DROP TABLE testBug8868;
+
+SET NAMES DEFAULT;
+
+
+#
 # Bug #19844 time_format in Union truncates values
 #
 
diff --git a/mysql-test/t/lowercase_fs_off.test b/mysql-test/t/lowercase_fs_off.test
index 7f7b573e7ee..883315994fe 100644
--- a/mysql-test/t/lowercase_fs_off.test
+++ b/mysql-test/t/lowercase_fs_off.test
@@ -3,6 +3,7 @@
 # i.e. lower_case_filesystem=OFF
 #
 -- source include/have_case_sensitive_file_system.inc
+-- source include/not_embedded.inc
 
 connect (master,localhost,root,,);
 connection master;
diff --git a/sql/mysqld.cc b/sql/mysqld.cc
index bf83772a8d8..fdc3d1cbd5d 100644
--- a/sql/mysqld.cc
+++ b/sql/mysqld.cc
@@ -6552,10 +6552,10 @@ get_one_option(int optid, const struct my_option *opt __attribute__((unused)),
     }
     switch (method-1) {
     case 0: 
-      method_conv= MI_STATS_METHOD_NULLS_EQUAL;
+      method_conv= MI_STATS_METHOD_NULLS_NOT_EQUAL;
       break;
     case 1:
-      method_conv= MI_STATS_METHOD_NULLS_NOT_EQUAL;
+      method_conv= MI_STATS_METHOD_NULLS_EQUAL;
       break;
     case 2:
       method_conv= MI_STATS_METHOD_IGNORE_NULLS;
diff --git a/sql/sql_string.cc b/sql/sql_string.cc
index 939ffe8d9d2..aaa85b0d96c 100644
--- a/sql/sql_string.cc
+++ b/sql/sql_string.cc
@@ -248,6 +248,10 @@ bool String::copy(const char *str,uint32 arg_length, CHARSET_INFO *cs)
    0  No conversion needed
    1  Either character set conversion or adding leading  zeros
       (e.g. for UCS-2) must be done
+
+  NOTE
+  to_cs may be NULL for "no conversion" if the system variable
+  character_set_results is NULL.
 */
 
 bool String::needs_conversion(uint32 arg_length,
@@ -256,7 +260,8 @@ bool String::needs_conversion(uint32 arg_length,
 			      uint32 *offset)
 {
   *offset= 0;
-  if ((to_cs == &my_charset_bin) || 
+  if (!to_cs ||
+      (to_cs == &my_charset_bin) || 
       (to_cs == from_cs) ||
       my_charset_same(from_cs, to_cs) ||
       ((from_cs == &my_charset_bin) &&
diff --git a/sql/stacktrace.c b/sql/stacktrace.c
index 838f547dc02..43f35c452f7 100644
--- a/sql/stacktrace.c
+++ b/sql/stacktrace.c
@@ -21,6 +21,7 @@
 
 #ifdef HAVE_STACKTRACE
 #include <unistd.h>
+#include <strings.h>
 
 #define PTR_SANE(p) ((p) && (char*)(p) >= heap_start && (char*)(p) <= heap_end)
 
@@ -44,7 +45,29 @@ void safe_print_str(const char* name, const char* val, int max_len)
 }
 
 #ifdef TARGET_OS_LINUX
-#define SIGRETURN_FRAME_COUNT  2
+
+#ifdef __i386__
+#define SIGRETURN_FRAME_OFFSET 17
+#endif
+
+#ifdef __x86_64__
+#define SIGRETURN_FRAME_OFFSET 23
+#endif
+
+static my_bool is_nptl;
+
+/* Check if we are using NPTL or LinuxThreads on Linux */
+void check_thread_lib(void)
+{
+  char buf[5];
+
+#ifdef _CS_GNU_LIBPTHREAD_VERSION
+  confstr(_CS_GNU_LIBPTHREAD_VERSION, buf, sizeof(buf));
+  is_nptl = !strncasecmp(buf, "NPTL", sizeof(buf));
+#else
+  is_nptl = 0;
+#endif
+}
 
 #if defined(__alpha__) && defined(__GNUC__)
 /*
@@ -90,7 +113,7 @@ inline uint32* find_prev_pc(uint32* pc, uchar** fp)
 void  print_stacktrace(gptr stack_bottom, ulong thread_stack)
 {
   uchar** fp;
-  uint frame_count = 0;
+  uint frame_count = 0, sigreturn_frame_count;
 #if defined(__alpha__) && defined(__GNUC__)
   uint32* pc;
 #endif
@@ -100,28 +123,27 @@ void  print_stacktrace(gptr stack_bottom, ulong thread_stack)
 Attempting backtrace. You can use the following information to find out\n\
 where mysqld died. If you see no messages after this, something went\n\
 terribly wrong...\n");
-#ifdef __i386__  
+#ifdef __i386__
   __asm __volatile__ ("movl %%ebp,%0"
 		      :"=r"(fp)
 		      :"r"(fp));
-  if (!fp)
-  {
-    fprintf(stderr, "frame pointer (ebp) is NULL, did you compile with\n\
--fomit-frame-pointer? Aborting backtrace!\n");
-    return;
-  }
+#endif
+#ifdef __x86_64__
+  __asm __volatile__ ("movq %%rbp,%0"
+		      :"=r"(fp)
+		      :"r"(fp));
 #endif
 #if defined(__alpha__) && defined(__GNUC__) 
   __asm __volatile__ ("mov $30,%0"
 		      :"=r"(fp)
 		      :"r"(fp));
+#endif
   if (!fp)
   {
-    fprintf(stderr, "frame pointer (fp) is NULL, did you compile with\n\
+    fprintf(stderr, "frame pointer is NULL, did you compile with\n\
 -fomit-frame-pointer? Aborting backtrace!\n");
     return;
   }
-#endif /* __alpha__ */
 
   if (!stack_bottom || (gptr) stack_bottom > (gptr) &fp)
   {
@@ -151,13 +173,16 @@ terribly wrong...\n");
 		      :"r"(pc));
 #endif  /* __alpha__ */
 
+  /* We are 1 frame above signal frame with NPTL and 2 frames above with LT */
+  sigreturn_frame_count = is_nptl ? 1 : 2;
+  
   while (fp < (uchar**) stack_bottom)
   {
-#ifdef __i386__    
+#if defined(__i386__) || defined(__x86_64__)
     uchar** new_fp = (uchar**)*fp;
-    fprintf(stderr, "%p\n", frame_count == SIGRETURN_FRAME_COUNT ?
-	    *(fp+17) : *(fp+1));
-#endif /* __386__ */
+    fprintf(stderr, "%p\n", frame_count == sigreturn_frame_count ?
+	    *(fp + SIGRETURN_FRAME_OFFSET) : *(fp + 1));
+#endif /* defined(__386__)  || defined(__x86_64__) */
 
 #if defined(__alpha__) && defined(__GNUC__)
     uchar** new_fp = find_prev_fp(pc, fp);
diff --git a/sql/stacktrace.h b/sql/stacktrace.h
index d5d1e05ef0e..527d10d70a2 100644
--- a/sql/stacktrace.h
+++ b/sql/stacktrace.h
@@ -19,16 +19,20 @@ extern "C" {
 #endif
 
 #ifdef TARGET_OS_LINUX
-#if defined(HAVE_STACKTRACE) || (defined (__i386__) || (defined(__alpha__) && defined(__GNUC__)))
+#if defined(HAVE_STACKTRACE) || (defined (__x86_64__) || defined (__i386__) || (defined(__alpha__) && defined(__GNUC__)))
 #undef HAVE_STACKTRACE
 #define HAVE_STACKTRACE
 
 extern char* __bss_start;
 extern char* heap_start;
 
-#define init_stacktrace() { heap_start = (char*) &__bss_start; }
+#define init_stacktrace() do {                                 \
+                            heap_start = (char*) &__bss_start; \
+                            check_thread_lib();                \
+                          } while(0);
 void print_stacktrace(gptr stack_bottom, ulong thread_stack);
 void safe_print_str(const char* name, const char* val, int max_len);
+void check_thread_lib(void);  
 #endif /* (defined (__i386__) || (defined(__alpha__) && defined(__GNUC__))) */
 #endif /* TARGET_OS_LINUX */