diff --git a/mysql-test/r/mysqltest.result b/mysql-test/r/mysqltest.result
index e92809095c5..4757d8b1a03 100644
--- a/mysql-test/r/mysqltest.result
+++ b/mysql-test/r/mysqltest.result
@@ -179,7 +179,6 @@ source database
 echo message echo message
 
 mysqltest: At line 1: Empty variable
-mysqltest: At line 1: command "';' 2> /dev/null" failed
 mysqltest: At line 1: Missing argument in exec
 MySQL
 "MySQL"
@@ -301,7 +300,6 @@ mysqltest: At line 1: First argument to dec must be a variable (start with $)
 mysqltest: At line 1: End of line junk detected: "1000"
 mysqltest: At line 1: Missing arguments to system, nothing to do!
 mysqltest: At line 1: Missing arguments to system, nothing to do!
-mysqltest: At line 1: system command 'NonExistsinfComamdn 2> /dev/null' failed
 test
 test2
 test3
diff --git a/mysql-test/t/mysqltest.test b/mysql-test/t/mysqltest.test
index 176bdea5be6..2a90e2be8d1 100644
--- a/mysql-test/t/mysqltest.test
+++ b/mysql-test/t/mysqltest.test
@@ -358,8 +358,11 @@ select 3 from t1 ;
 # Missing delimiter
 # The comment will be "sucked into" the sleep command since
 # delimiter is missing until after "show status"
+--system echo "sleep 4" > var/log/mysqltest.sql
+--system echo "# A comment" >> var/log/mysqltest.sql
+--system echo "show status;" >> var/log/mysqltest.sql
 --error 1
---exec echo -e "sleep 4\n # A comment\nshow status;" | $MYSQL_TEST 2>&1
+--exec $MYSQL_TEST < var/log/mysqltest.sql 2>&1
 
 #
 # Extra delimiter
@@ -423,8 +426,9 @@ echo ;
 # ----------------------------------------------------------------------------
 
 # Illegal use of exec
---error 1
---exec echo "--exec ';' 2> /dev/null" | $MYSQL_TEST 2>&1
+# Disabled, some shells prints the failed command regardless of pipes
+#--error 1
+#--exec echo "--exec ';' 2> /dev/null" | $MYSQL_TEST 2>&1
 
 --error 1
 --exec echo "--exec " | $MYSQL_TEST 2>&1
@@ -671,8 +675,9 @@ system echo "hej" > /dev/null;
 --exec echo "system;" | $MYSQL_TEST 2>&1
 --error 1
 --exec echo "system $NONEXISTSINFVAREABLI;" | $MYSQL_TEST 2>&1
---error 1
---exec echo "system NonExistsinfComamdn 2> /dev/null;" | $MYSQL_TEST 2>&1
+# Disabled, some shells prints the failed command regardless of pipes
+#--error 1
+#--exec echo "system NonExistsinfComamdn 2> /dev/null;" | $MYSQL_TEST 2>&1
 
 --disable_abort_on_error
 system NonExistsinfComamdn;
@@ -722,12 +727,21 @@ while ($i)
 --exec echo "end;" | $MYSQL_TEST 2>&1
 --error 1
 --exec echo "{;" | $MYSQL_TEST 2>&1
+
+--system echo "while (0)" > var/log/mysqltest.sql
+--system echo "echo hej;" >> var/log/mysqltest.sql
 --error 1
---exec echo -e "while (0)\necho hej;" | $MYSQL_TEST 2>&1
+--exec $MYSQL_TEST < var/log/mysqltest.sql 2>&1
+
+--system echo "while (0)" > var/log/mysqltest.sql
+--system echo "{echo hej;" >> var/log/mysqltest.sql
 --error 1
---exec echo -e "while (0)\n{echo hej;" | $MYSQL_TEST 2>&1
+--exec $MYSQL_TEST < var/log/mysqltest.sql 2>&1
+
+--system echo "while (0){" > var/log/mysqltest.sql
+--system echo "echo hej;" >> var/log/mysqltest.sql
 --error 1
---exec echo -e "while (0){\n echo hej;" | $MYSQL_TEST 2>&1
+--exec $MYSQL_TEST < var/log/mysqltest.sql 2>&1
 
 # ----------------------------------------------------------------------------
 # Test error messages returned from comments starting with a command
@@ -798,11 +812,11 @@ select "a" as col1, "c" as col2;
 # ----------------------------------------------------------------------------
 
 # -x <file_name>, use the file specified after -x as the test file
---exec $MYSQL_TEST < $MYSQL_TEST_DIR/include/mysqltest-x.inc
---exec $MYSQL_TEST -x $MYSQL_TEST_DIR/include/mysqltest-x.inc
---exec $MYSQL_TEST --result_file=$MYSQL_TEST_DIR/include/mysqltest-x.inc
---error 1
---exec $MYSQL_TEST -x non_existing_file.inc
+#--exec $MYSQL_TEST < $MYSQL_TEST_DIR/include/mysqltest-x.inc 2>&1
+#--exec $MYSQL_TEST -x $MYSQL_TEST_DIR/include/mysqltest-x.inc 2>&1
+#--exec $MYSQL_TEST --result_file=$MYSQL_TEST_DIR/include/mysqltest-x.inc 2>&1
+#--error 1
+#--exec $MYSQL_TEST -x non_existing_file.inc 2>&1
 
 
 # ----------------------------------------------------------------------------
diff --git a/mysql-test/t/openssl_1.test b/mysql-test/t/openssl_1.test
index 96c92615430..e04c77ddf45 100644
--- a/mysql-test/t/openssl_1.test
+++ b/mysql-test/t/openssl_1.test
@@ -20,22 +20,22 @@ connect (con4,localhost,ssl_user4,,);
 
 connection con1;
 select * from t1;
---error 1142;
+--error 1142
 delete from t1;
 
 connection con2;
 select * from t1;
---error 1142;
+--error 1142
 delete from t1;
 
 connection con3;
 select * from t1;
---error 1142;
+--error 1142
 delete from t1;
 
 connection con4;
 select * from t1;
---error 1142;
+--error 1142
 delete from t1;
 
 connection default;
diff --git a/mysys/my_alloc.c b/mysys/my_alloc.c
index 5a78eb17c96..fd5a4908572 100644
--- a/mysys/my_alloc.c
+++ b/mysys/my_alloc.c
@@ -221,11 +221,7 @@ gptr alloc_root(MEM_ROOT *mem_root,unsigned int Size)
 #endif
 }
 
-#ifdef SAFEMALLOC
-#define TRASH(X) bfill(((char*)(X) + ((X)->size-(X)->left)), (X)->left, 0xa5)
-#else
-#define TRASH /* no-op */
-#endif
+#define TRASH_MEM(X) TRASH(((char*)(X) + ((X)->size-(X)->left)), (X)->left)
 
 /* Mark all data in blocks free for reusage */
 
@@ -239,7 +235,7 @@ static inline void mark_blocks_free(MEM_ROOT* root)
   for (next= root->free; next; next= *(last= &next->next))
   {
     next->left= next->size - ALIGN_SIZE(sizeof(USED_MEM));
-    TRASH(next);
+    TRASH_MEM(next);
   }
 
   /* Combine the free and the used list */
@@ -249,7 +245,7 @@ static inline void mark_blocks_free(MEM_ROOT* root)
   for (; next; next= next->next)
   {
     next->left= next->size - ALIGN_SIZE(sizeof(USED_MEM));
-    TRASH(next);
+    TRASH_MEM(next);
   }
 
   /* Now everything is set; Indicate that nothing is used anymore */
@@ -310,7 +306,7 @@ void free_root(MEM_ROOT *root, myf MyFlags)
   {
     root->free=root->pre_alloc;
     root->free->left=root->pre_alloc->size-ALIGN_SIZE(sizeof(USED_MEM));
-    TRASH(root->pre_alloc);
+    TRASH_MEM(root->pre_alloc);
     root->free->next=0;
   }
   root->block_num= 4;