MDEV-25586 : SIGSEGV in my_strcasecmp_utf8mb3

Fixed NULL pointer reference to db.str

MDEV-25586 : SIGSEGV in my_strcasecmp_utf8mb3
Fixed NULL pointer reference to db.str
f6732774 · Jan Lindström · 803fa4b3 · f6732774
Commit f6732774 authored May 05, 2021 by Jan Lindström
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sql/table.cc sql/table.cc +2 -1

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--- a/sql/table.cc
+++ b/sql/table.cc
@@ -279,7 +279,8 @@ TABLE_CATEGORY get_table_category(const LEX_CSTRING *db,
  DBUG_ASSERT(name != NULL);

 #ifdef WITH_WSREP
-  if (my_strcasecmp(system_charset_info, db->str, "mysql") == 0 &&
+  if (db->str &&
+      my_strcasecmp(system_charset_info, db->str, "mysql") == 0 &&
      my_strcasecmp(system_charset_info, name->str, "wsrep_streaming_log") == 0)
  {
    return TABLE_CATEGORY_INFORMATION;