This fix is a follow up on the fix for similar issue 56761.
When sanitizing data read from the events_waits_history_long table,
the code needs also to sanitize the schema_name / object_name / file_name pointers,
because such pointers could also hold invalid values.
Checking the string length alone was required but not sufficient.
This fix verifies that:
- the table schema and table name used in table io events
- the file name used in file io events
are valid pointers before dereferencing these pointers.
Fix various mismatches between function's language linkage. Any
particular function that is declared in C++ but should be callable
from C must have C linkage. Note that function types with different
linkages are also distinct. Thus, if a function type is declared in
C code, it will have C linkage (same if declared in a extern "C"
block).
client/mysql.cc:
Mismatch between prototype and declaration.
client/mysqltest.cc:
mysqltest used to be C code. Use C linkage where appropriate.
cmd-line-utils/readline/input.c:
Isolate unreachable code.
include/my_alloc.h:
Function type must have C linkage.
include/my_base.h:
Function type must have C linkage.
include/my_global.h:
Add helper macros to avoid spurious namespace indentation.
include/mysql.h.pp:
Update ABI file.
mysys/my_gethwaddr.c:
Remove stray carriage return and fix coding style.
plugin/semisync/semisync_master_plugin.cc:
Callback function types have C linkage.
plugin/semisync/semisync_slave_plugin.cc:
Callback function types have C linkage.
sql/derror.cc:
Expected function type has C linkage.
sql/field.cc:
Use helper macro and fix indentation.
sql/handler.cc:
Expected function type has C linkage.
sql/item_sum.cc:
Correct function linkages. Remove now unnecessary cast.
sql/item_sum.h:
Add prototypes with the appropriate linkage as otherwise they
are distinct.
sql/mysqld.cc:
Wrap functions in C linkage mode.
sql/opt_range.cc:
C language linkage is ignored for class member functions.
sql/partition_info.cc:
Add wrapper functions with C linkage for class member functions.
sql/rpl_utility.h:
Use helper macro and fix indentation.
sql/sql_class.cc:
Change type of thd argument -- THD is a class.
Use helper macro and fix indentation.
sql/sql_class.h:
Change type of thd argument -- THD is a class.
sql/sql_select.cc:
Expected function type has C linkage.
sql/sql_select.h:
Move prototype to sql_test.h
sql/sql_show.cc:
Expected function type has C linkage.
sql/sql_test.cc:
Fix required function prototype and fix coding style.
sql/sql_test.h:
Removed unnecessary export and add another.
storage/myisammrg/ha_myisammrg.cc:
Expected function type has C linkage.
storage/perfschema/pfs.cc:
PSI headers are declared with C language linkage, which also
applies to function types.
