Merge 10.1 into 10.2

For running the Galera tests, the variable my_disable_leak_check
was set to true in order to avoid assertions due to memory leaks
at shutdown.

Some adjustments due to MDEV-13625 (merge InnoDB tests from MySQL 5.6)
were performed. The most notable behaviour changes from 10.0 and 10.1
are the following:

* innodb.innodb-table-online: adjustments for the DROP COLUMN
behaviour change (MDEV-11114, MDEV-13613)

* innodb.innodb-index-online-fk: the removal of a (1,NULL) record
from the result; originally removed in MySQL 5.7 in the
Oracle Bug #16244691 fix
https://github.com/mysql/mysql-server/commit/377774689bf6a16af74182753fe950d514c2c6dd

* innodb.create-index-debug: disabled due to MDEV-13680
(the MySQL Bug #77497 fix was not merged from 5.6 to 5.7.10)

* innodb.innodb-alter-autoinc: MariaDB 10.2 behaves like MySQL 5.6/5.7,
while MariaDB 10.0 and 10.1 assign different values when
auto_increment_increment or auto_increment_offset are used.
Also MySQL 5.6/5.7 exhibit different behaviour between
LGORITHM=INPLACE and ALGORITHM=COPY, so something needs to be tested
and fixed in both MariaDB 10.0 and 10.2.

* innodb.innodb-wl5980-alter: disabled because it would trigger an
InnoDB assertion failure (MDEV-13668 may need additional effort in 10.2)

1 files changed, 14 insertions, 0 deletions

diff --git a/sql/wsrep_utils.cc b/sql/wsrep_utils.cc
index 9c77cb49256..1a358877a35 100644
--- a/sql/wsrep_utils.cc
+++ b/sql/wsrep_utils.cc
@@ -573,3 +573,17 @@ done:
   return ret;
 }
 
+/* returns the length of the host part of the address string */
+size_t wsrep_host_len(const char* const addr, size_t const addr_len)
+{
+  // check for IPv6 notation first
+  const char* const bracket= ('[' == addr[0] ? strchr(addr, ']') : NULL);
+
+  if (bracket) { // IPv6
+    return (bracket - addr + 1);
+  }
+  else { // host part ends at ':' or end of string
+    const char* const colon= strchr(addr, ':');
+    return (colon ? colon - addr : addr_len);
+  }
+}