diff --git a/mysql-test/mysql-test-run.pl b/mysql-test/mysql-test-run.pl
index 425a7ef3afb..e6a99025091 100755
--- a/mysql-test/mysql-test-run.pl
+++ b/mysql-test/mysql-test-run.pl
@@ -479,7 +479,7 @@ sub main {
     }
   }
 
-  if ( not defined @$completed ) {
+  if ( not @$completed ) {
     mtr_error("Test suite aborted");
   }
 
diff --git a/mysql-test/r/repair_symlink-5543.result b/mysql-test/r/repair_symlink-5543.result
new file mode 100644
index 00000000000..051c9ca3472
--- /dev/null
+++ b/mysql-test/r/repair_symlink-5543.result
@@ -0,0 +1,14 @@
+create table t1 (a int) engine=myisam data directory='MYSQL_TMP_DIR';
+insert t1 values (1);
+repair table t1;
+Table	Op	Msg_type	Msg_text
+test.t1	repair	error	Can't create new tempfile: 'MYSQL_TMP_DIR/t1.TMD'
+test.t1	repair	status	Operation failed
+drop table t1;
+create table t2 (a int) engine=aria data directory='MYSQL_TMP_DIR';
+insert t2 values (1);
+repair table t2;
+Table	Op	Msg_type	Msg_text
+test.t2	repair	error	Can't create new tempfile: 'MYSQL_TMP_DIR/t2.TMD'
+test.t2	repair	status	Operation failed
+drop table t2;
diff --git a/mysql-test/t/repair_symlink-5543.test b/mysql-test/t/repair_symlink-5543.test
new file mode 100644
index 00000000000..bad65a4175a
--- /dev/null
+++ b/mysql-test/t/repair_symlink-5543.test
@@ -0,0 +1,26 @@
+#
+# MDEV-5543 MyISAM repair unsafe usage of TMD files 
+#
+--source include/have_symlink.inc
+--source include/not_windows.inc
+--source include/have_maria.inc
+
+--replace_result $MYSQL_TMP_DIR MYSQL_TMP_DIR
+eval create table t1 (a int) engine=myisam data directory='$MYSQL_TMP_DIR';
+insert t1 values (1);
+--system ln -s $MYSQL_TMP_DIR/foobar5543 $MYSQL_TMP_DIR/t1.TMD
+--replace_result $MYSQL_TMP_DIR MYSQL_TMP_DIR
+repair table t1;
+drop table t1;
+
+--replace_result $MYSQL_TMP_DIR MYSQL_TMP_DIR
+eval create table t2 (a int) engine=aria data directory='$MYSQL_TMP_DIR';
+insert t2 values (1);
+--system ln -s $MYSQL_TMP_DIR/foobar5543 $MYSQL_TMP_DIR/t2.TMD
+--replace_result $MYSQL_TMP_DIR MYSQL_TMP_DIR
+repair table t2;
+drop table t2;
+
+--list_files $MYSQL_TMP_DIR foobar5543
+--system rm $MYSQL_TMP_DIR/t1.TMD $MYSQL_TMP_DIR/t2.TMD
+
diff --git a/mysys/md5.c b/mysys/md5.c
index 2388cebedc4..22a5e409a09 100644
--- a/mysys/md5.c
+++ b/mysys/md5.c
@@ -176,7 +176,7 @@ my_MD5Final (unsigned char digest[16], my_MD5Context *ctx)
   putu32(ctx->buf[1], digest + 4);
   putu32(ctx->buf[2], digest + 8);
   putu32(ctx->buf[3], digest + 12);
-  memset(ctx, 0, sizeof(ctx));	/* In case it's sensitive */
+  memset(ctx, 0, sizeof(*ctx));	/* In case it's sensitive */
 }
 
 #ifndef ASM_MD5
diff --git a/sql/field.cc b/sql/field.cc
index e9c6065287f..bdbf6471d0e 100644
--- a/sql/field.cc
+++ b/sql/field.cc
@@ -7708,7 +7708,7 @@ int Field_blob::store(const char *from,uint length,CHARSET_INFO *cs)
     if (!String::needs_conversion(length, cs, field_charset, &dummy_offset))
     {
       Field_blob::store_length(length);
-      bmove(ptr+packlength,(char*) &from,sizeof(char*));
+      bmove(ptr + packlength, &from, sizeof(char*));
       return 0;
     }
     if (tmpstr.copy(from, length, cs))
@@ -8363,7 +8363,7 @@ int Field_geom::store(const char *from, uint length, CHARSET_INFO *cs)
       value.copy(from, length, cs);
       from= value.ptr();
     }
-    bmove(ptr + packlength, (char*) &from, sizeof(char*));
+    bmove(ptr + packlength, &from, sizeof(char*));
   }
   return 0;
 
diff --git a/storage/maria/ha_maria.cc b/storage/maria/ha_maria.cc
index f75ca9e430b..8fbb4cfd319 100644
--- a/storage/maria/ha_maria.cc
+++ b/storage/maria/ha_maria.cc
@@ -1,5 +1,6 @@
 /* Copyright (C) 2004-2008 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
    Copyright (C) 2008-2009 Sun Microsystems, Inc.
+   Copyright (c) 2009, 2014, SkySQL Ab.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -1521,7 +1522,7 @@ int ha_maria::repair(THD *thd, HA_CHECK *param, bool do_optimize)
 
   param->db_name= table->s->db.str;
   param->table_name= table->alias.c_ptr();
-  param->tmpfile_createflag= O_RDWR | O_TRUNC;
+  param->tmpfile_createflag= O_RDWR | O_TRUNC | O_EXCL;
   param->using_global_keycache= 1;
   param->thd= thd;
   param->tmpdir= &mysql_tmpdir_list;
diff --git a/storage/maria/ma_blockrec.c b/storage/maria/ma_blockrec.c
index 6caf09c48e4..9a9ebbc98af 100644
--- a/storage/maria/ma_blockrec.c
+++ b/storage/maria/ma_blockrec.c
@@ -7172,7 +7172,7 @@ my_bool _ma_apply_undo_row_delete(MARIA_HA *info, LSN undo_lsn,
 
       memcpy(field_pos, field_length_data, size_length);
       field_length_data+= size_length;
-      memcpy(field_pos + size_length, &header, sizeof(&header));
+      memcpy(field_pos + size_length, &header, sizeof(header));
       header+= blob_length;
       *blob_lengths++= blob_length;
       break;
diff --git a/storage/maria/ma_checksum.c b/storage/maria/ma_checksum.c
index 61ec638053a..da2d40d3687 100644
--- a/storage/maria/ma_checksum.c
+++ b/storage/maria/ma_checksum.c
@@ -58,7 +58,7 @@ ha_checksum _ma_checksum(MARIA_HA *info, const uchar *record)
       length= _ma_calc_blob_length(blob_size_length, pos);
       if (length)
       {
-        memcpy((char*) &pos, pos + blob_size_length, sizeof(char*));
+        memcpy(&pos, pos + blob_size_length, sizeof(char*));
         crc= my_checksum(crc, pos, length);
       }
       continue;
diff --git a/storage/maria/ma_key.c b/storage/maria/ma_key.c
index 207ae9a8bda..037e8db2cfb 100644
--- a/storage/maria/ma_key.c
+++ b/storage/maria/ma_key.c
@@ -583,7 +583,7 @@ static int _ma_put_key_in_record(register MARIA_HA *info, uint keynr,
 	goto err;
 #endif
       memcpy(record+keyseg->start+keyseg->bit_start,
-	     (char*) &blob_ptr,sizeof(char*));
+	     &blob_ptr,sizeof(char*));
       memcpy(blob_ptr,key,length);
       blob_ptr+=length;
 
diff --git a/storage/myisam/ha_myisam.cc b/storage/myisam/ha_myisam.cc
index f0a6eb3ea39..f05513cd301 100644
--- a/storage/myisam/ha_myisam.cc
+++ b/storage/myisam/ha_myisam.cc
@@ -1,5 +1,6 @@
 /*
    Copyright (c) 2000, 2011, Oracle and/or its affiliates
+   Copyright (c) 2009, 2014, SkySQL Ab.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -1143,7 +1144,7 @@ int ha_myisam::repair(THD *thd, HA_CHECK &param, bool do_optimize)
 
   param.db_name=    table->s->db.str;
   param.table_name= table->alias.c_ptr();
-  param.tmpfile_createflag = O_RDWR | O_TRUNC;
+  param.tmpfile_createflag= O_RDWR | O_TRUNC | O_EXCL;
   param.using_global_keycache = 1;
   param.thd= thd;
   param.tmpdir= &mysql_tmpdir_list;
diff --git a/storage/myisam/mi_checksum.c b/storage/myisam/mi_checksum.c
index 8c408ef7ff5..13dd52db22e 100644
--- a/storage/myisam/mi_checksum.c
+++ b/storage/myisam/mi_checksum.c
@@ -40,7 +40,7 @@ ha_checksum mi_checksum(MI_INFO *info, const uchar *buf)
       length=_mi_calc_blob_length(column->length-
                                   portable_sizeof_char_ptr,
                                   buf);
-      memcpy((char*) &pos, buf+column->length- portable_sizeof_char_ptr,
+      memcpy(&pos, buf+column->length- portable_sizeof_char_ptr,
 	     sizeof(char*));
       break;
     }
diff --git a/storage/myisam/mi_key.c b/storage/myisam/mi_key.c
index 94f3f34ec58..02254bae68d 100644
--- a/storage/myisam/mi_key.c
+++ b/storage/myisam/mi_key.c
@@ -419,7 +419,7 @@ static int _mi_put_key_in_record(register MI_INFO *info, uint keynr,
 	goto err;
 #endif
       memcpy(record+keyseg->start+keyseg->bit_start,
-	     (char*) &blob_ptr,sizeof(char*));
+	     &blob_ptr,sizeof(char*));
       memcpy(blob_ptr,key,length);
       blob_ptr+=length;
 
diff --git a/storage/pbxt/src/myxt_xt.cc b/storage/pbxt/src/myxt_xt.cc
index b7b81823383..49a22e980ca 100644
--- a/storage/pbxt/src/myxt_xt.cc
+++ b/storage/pbxt/src/myxt_xt.cc
@@ -937,7 +937,7 @@ xtPublic xtBool myxt_create_row_from_key(XTOpenTablePtr XT_UNUSED(ot), XTIndexPt
 			 */
 			byte *key_ptr = key; // Cannot take the address of a register variable!
 			memcpy(record+keyseg->start+keyseg->bit_start,
-			 (char*) &key_ptr,sizeof(char*));
+                               &key_ptr,sizeof(char*));
 
 			my_store_blob_length(record+keyseg->start,
 					(uint) keyseg->bit_start,length);