diff --git a/BUILD/SETUP.sh b/BUILD/SETUP.sh
index a23a801e7e0..a58360cc063 100755
--- a/BUILD/SETUP.sh
+++ b/BUILD/SETUP.sh
@@ -111,7 +111,7 @@ else
 # C++ warnings
   cxx_warnings="$warnings -Wno-unused-parameter"
 # cxx_warnings="$cxx_warnings -Woverloaded-virtual -Wsign-promo"
-  cxx_warnings="$cxx_warnings -Wctor-dtor-privacy -Wnon-virtual-dtor"
+  cxx_warnings="$cxx_warnings -Wnon-virtual-dtor"
   debug_extra_cflags="-O0 -g3 -gdwarf-2"
 fi
 
diff --git a/cmd-line-utils/readline/terminal.c b/cmd-line-utils/readline/terminal.c
index 3f92821f9dd..e2785908160 100644
--- a/cmd-line-utils/readline/terminal.c
+++ b/cmd-line-utils/readline/terminal.c
@@ -268,7 +268,7 @@ _rl_get_screen_size (tty, ignore_env)
 
 #if !defined (__DJGPP__)
       if (_rl_screenwidth <= 0 && term_string_buffer)
-	_rl_screenwidth = tgetnum ("co");
+	_rl_screenwidth = tgetnum ((char *)"co");
 #endif
     }
 
@@ -284,7 +284,7 @@ _rl_get_screen_size (tty, ignore_env)
 
 #if !defined (__DJGPP__)
       if (_rl_screenheight <= 0 && term_string_buffer)
-	_rl_screenheight = tgetnum ("li");
+	_rl_screenheight = tgetnum ((char *)"li");
 #endif
     }
 
@@ -516,7 +516,7 @@ _rl_init_terminal_io (terminal_name)
   if (!_rl_term_cr)
     _rl_term_cr = "\r";
 
-  _rl_term_autowrap = tgetflag ("am") && tgetflag ("xn");
+  _rl_term_autowrap = tgetflag ((char *)"am") && tgetflag ((char *)"xn");
 
   /* Allow calling application to set default height and width, using
      rl_set_screen_size */
@@ -531,7 +531,7 @@ _rl_init_terminal_io (terminal_name)
 
   /* Check to see if this terminal has a meta key and clear the capability
      variables if there is none. */
-  term_has_meta = (tgetflag ("km") || tgetflag ("MT"));
+  term_has_meta = (tgetflag ((char *)"km") || tgetflag ((char *)"MT"));
   if (!term_has_meta)
     _rl_term_mm = _rl_term_mo = (char *)NULL;
 
diff --git a/mysql-test/r/lowercase_table4.result b/mysql-test/r/lowercase_table4.result
new file mode 100755
index 00000000000..e3f861f8884
--- /dev/null
+++ b/mysql-test/r/lowercase_table4.result
@@ -0,0 +1,7 @@
+#
+# Bug#46941 crash with lower_case_table_names=2 and
+#           foreign data dictionary confusion
+#
+CREATE DATABASE XY;
+USE XY;
+DROP DATABASE XY;
diff --git a/mysql-test/r/select.result b/mysql-test/r/select.result
index 96979d257f1..a345a2ae6aa 100644
--- a/mysql-test/r/select.result
+++ b/mysql-test/r/select.result
@@ -4887,3 +4887,22 @@ col_int_key
 DROP VIEW view_t1;
 DROP TABLE t1;
 # End of test BUG#54515
+#
+# Bug #57203 Assertion `field_length <= 255' failed.
+#
+SELECT coalesce((avg(distinct (geomfromtext("point(25379 -22010)"))))) 
+UNION ALL 
+SELECT coalesce((avg(distinct (geomfromtext("point(25379 -22010)")))))
+AS foo
+;
+coalesce((avg(distinct (geomfromtext("point(25379 -22010)")))))
+0.0000
+0.0000
+CREATE table t1(a text);
+INSERT INTO t1 VALUES (''), ('');
+SELECT avg(distinct(t1.a)) FROM t1, t1 t2
+GROUP BY t2.a ORDER BY t1.a;
+avg(distinct(t1.a))
+0
+DROP TABLE t1;
+# End of test BUG#57203
diff --git a/mysql-test/t/lowercase_table4-master.opt b/mysql-test/t/lowercase_table4-master.opt
new file mode 100755
index 00000000000..c0a1981fa7c
--- /dev/null
+++ b/mysql-test/t/lowercase_table4-master.opt
@@ -0,0 +1 @@
+--lower-case-table-names=2
diff --git a/mysql-test/t/lowercase_table4.test b/mysql-test/t/lowercase_table4.test
new file mode 100755
index 00000000000..93956047145
--- /dev/null
+++ b/mysql-test/t/lowercase_table4.test
@@ -0,0 +1,56 @@
+--source include/have_case_insensitive_file_system.inc
+--source include/have_innodb.inc
+
+--echo #
+--echo # Bug#46941 crash with lower_case_table_names=2 and
+--echo #           foreign data dictionary confusion
+--echo #
+
+CREATE DATABASE XY;
+USE XY;
+
+#
+# Logs are disabled, since the number of creates tables
+# and subsequent select statements may vary between
+# versions
+#
+--disable_query_log
+--disable_result_log
+
+let $tcs = `SELECT @@table_open_cache + 1`;
+
+let $i = $tcs;
+
+while ($i)
+{
+  eval CREATE TABLE XY.T_$i (a INT NOT NULL, b INT NOT NULL, c INT NOT NULL, d INT, 
+                             primary key(a, b), unique(b)) ENGINE=InnoDB;
+  dec $i;
+}
+
+eval ALTER TABLE XY.T_$tcs ADD INDEX I1 (c, b), 
+                           ADD CONSTRAINT C1 FOREIGN KEY (c, b) REFERENCES XY.T_1 (a, b);
+                   
+eval ALTER TABLE XY.T_$tcs ADD INDEX I2 (b),
+                           ADD CONSTRAINT C2 FOREIGN KEY (b) REFERENCES XY.T_1(a);
+ 
+let $i = $tcs;
+while ($i)
+{
+  eval SELECT * FROM XY.T_$i LIMIT 1;
+  dec $i;
+}
+
+DROP DATABASE XY;
+CREATE DATABASE XY;
+USE XY;
+eval CREATE TABLE XY.T_$tcs (a INT NOT NULL, b INT NOT NULL, c INT NOT NULL, d INT, 
+                             PRIMARY KEY(a, b), UNIQUE(b)) ENGINE=InnoDB;
+#
+# The bug causes this SELECT to err
+eval SELECT * FROM XY.T_$tcs LIMIT 1;
+
+--enable_query_log
+--enable_result_log
+DROP DATABASE XY;
+
diff --git a/mysql-test/t/select.test b/mysql-test/t/select.test
index 87f36c452f2..3ed7213e8d7 100644
--- a/mysql-test/t/select.test
+++ b/mysql-test/t/select.test
@@ -4147,3 +4147,22 @@ DROP VIEW view_t1;
 DROP TABLE t1;
 
 --echo # End of test BUG#54515
+
+--echo #
+--echo # Bug #57203 Assertion `field_length <= 255' failed.
+--echo #
+
+SELECT coalesce((avg(distinct (geomfromtext("point(25379 -22010)"))))) 
+UNION ALL 
+SELECT coalesce((avg(distinct (geomfromtext("point(25379 -22010)")))))
+AS foo
+;
+
+CREATE table t1(a text);
+INSERT INTO t1 VALUES (''), ('');
+SELECT avg(distinct(t1.a)) FROM t1, t1 t2
+GROUP BY t2.a ORDER BY t1.a;
+
+DROP TABLE t1;
+
+--echo # End of test BUG#57203
diff --git a/mysys/my_gethostbyname.c b/mysys/my_gethostbyname.c
index 4b7e9054d61..8a9c721c2fb 100644
--- a/mysys/my_gethostbyname.c
+++ b/mysys/my_gethostbyname.c
@@ -92,8 +92,10 @@ extern mysql_mutex_t LOCK_gethostbyname_r;
 */
 
 struct hostent *my_gethostbyname_r(const char *name,
-				   struct hostent *result, char *buffer,
-				   int buflen, int *h_errnop)
+                                   struct hostent *res __attribute__((unused)),
+                                   char *buffer __attribute__((unused)),
+                                   int buflen __attribute__((unused)),
+                                   int *h_errnop)
 {
   struct hostent *hp;
   mysql_mutex_lock(&LOCK_gethostbyname_r);
diff --git a/mysys/my_sync.c b/mysys/my_sync.c
index bc050922ffc..b090788d4e9 100644
--- a/mysys/my_sync.c
+++ b/mysys/my_sync.c
@@ -89,6 +89,8 @@ int my_sync(File fd, myf my_flags)
 
 
 static const char cur_dir_name[]= {FN_CURLIB, 0};
+
+
 /*
   Force directory information to disk.
 
@@ -100,7 +102,9 @@ static const char cur_dir_name[]= {FN_CURLIB, 0};
   RETURN
     0 if ok, !=0 if error
 */
+
 #ifdef NEED_EXPLICIT_SYNC_DIR
+
 int my_sync_dir(const char *dir_name, myf my_flags)
 {
   File dir_fd;
@@ -125,12 +129,15 @@ int my_sync_dir(const char *dir_name, myf my_flags)
     res= 1;
   DBUG_RETURN(res);
 }
+
 #else /* NEED_EXPLICIT_SYNC_DIR */
+
 int my_sync_dir(const char *dir_name __attribute__((unused)),
-		myf my_flags __attribute__((unused)))
+                myf my_flags __attribute__((unused)))
 {
   return 0;
 }
+
 #endif /* NEED_EXPLICIT_SYNC_DIR */
 
 
@@ -145,7 +152,9 @@ int my_sync_dir(const char *dir_name __attribute__((unused)),
   RETURN
     0 if ok, !=0 if error
 */
+
 #ifdef NEED_EXPLICIT_SYNC_DIR
+
 int my_sync_dir_by_file(const char *file_name, myf my_flags)
 {
   char dir_name[FN_REFLEN];
@@ -153,10 +162,14 @@ int my_sync_dir_by_file(const char *file_name, myf my_flags)
   dirname_part(dir_name, file_name, &dir_name_length);
   return my_sync_dir(dir_name, my_flags);
 }
+
 #else /* NEED_EXPLICIT_SYNC_DIR */
+
 int my_sync_dir_by_file(const char *file_name __attribute__((unused)),
-			myf my_flags __attribute__((unused)))
+                        myf my_flags __attribute__((unused)))
 {
   return 0;
 }
+
 #endif /* NEED_EXPLICIT_SYNC_DIR */
+
diff --git a/sql/field.cc b/sql/field.cc
index be7441f6bfd..d746de385b6 100644
--- a/sql/field.cc
+++ b/sql/field.cc
@@ -4189,7 +4189,7 @@ String *Field_float::val_str(String *val_buffer,
 			     String *val_ptr __attribute__((unused)))
 {
   ASSERT_COLUMN_MARKED_FOR_READ;
-  DBUG_ASSERT(field_length <= MAX_FIELD_CHARLENGTH);
+  DBUG_ASSERT(!zerofill || field_length <= MAX_FIELD_CHARLENGTH);
   float nr;
 #ifdef WORDS_BIGENDIAN
   if (table->s->db_low_byte_first)
@@ -4512,7 +4512,7 @@ String *Field_double::val_str(String *val_buffer,
 			      String *val_ptr __attribute__((unused)))
 {
   ASSERT_COLUMN_MARKED_FOR_READ;
-  DBUG_ASSERT(field_length <= MAX_FIELD_CHARLENGTH);
+  DBUG_ASSERT(!zerofill || field_length <= MAX_FIELD_CHARLENGTH);
   double nr;
 #ifdef WORDS_BIGENDIAN
   if (table->s->db_low_byte_first)
diff --git a/storage/innobase/os/os0file.c b/storage/innobase/os/os0file.c
index 6c17ded0073..3d1577fe3ca 100644
--- a/storage/innobase/os/os0file.c
+++ b/storage/innobase/os/os0file.c
@@ -1295,10 +1295,12 @@ UNIV_INTERN
 void
 os_file_set_nocache(
 /*================*/
-	int		fd,		/*!< in: file descriptor to alter */
-	const char*	file_name,	/*!< in: file name, used in the
-					diagnostic message */
-	const char*	operation_name)	/*!< in: "open" or "create"; used in the
+	int		fd		/*!< in: file descriptor to alter */
+	__attribute__((unused)),
+	const char*	file_name	/*!< in: used in the diagnostic message */
+	__attribute__((unused)),
+	const char*	operation_name __attribute__((unused)))
+					/*!< in: "open" or "create"; used in the
 					diagnostic message */
 {
 	/* some versions of Solaris may not have DIRECTIO_ON */