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------------------------------------------------------------
        revno: 2617.81.1
        revision-id: tor.didriksen@sun.com-20090924061133-qo02zotz3yypmfpk
        parent: davi.arnaut@sun.com-20090923203724-tvz7x8dauzp686v7
        committer: Tor Didriksen <tor.didriksen@sun.com>
        branch nick: 6.0-codebase-bf-opt
        timestamp: Thu 2009-09-24 08:11:33 +0200
        message:
          Bug#47511 Segmentation fault during cleanup in sql_union (events_bugs.test)
          


sql/sql_lex.h:
  Ensure that fields used during cleanup() are always initialized by constructors.
This commit is contained in:
Tor Didriksen 2009-11-30 09:54:46 +01:00
parent 8a66b18c34
commit aa70ca7156
1 changed files with 22 additions and 1 deletions
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23
sql/sql_lex.h
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@ -403,6 +403,8 @@ public:
struct LEX;
class st_select_lex;
class st_select_lex_unit;
class st_select_lex_node {
protected:
st_select_lex_node *next, **prev, /* neighbor list */
@ -440,8 +442,17 @@ public:
{ return (void*) alloc_root(mem_root, (uint) size); }
static void operator delete(void *ptr,size_t size) { TRASH(ptr, size); }
static void operator delete(void *ptr, MEM_ROOT *mem_root) {}
st_select_lex_node(): linkage(UNSPECIFIED_TYPE) {}
// Ensures that at least all members used during cleanup() are initialized.
st_select_lex_node()
: next(NULL), prev(NULL),
master(NULL), slave(NULL),
link_next(NULL), link_prev(NULL),
linkage(UNSPECIFIED_TYPE)
{
}
virtual ~st_select_lex_node() {}
inline st_select_lex_node* get_master() { return master; }
virtual void init_query();
virtual void init_select();
@ -487,6 +498,8 @@ class select_result;
class JOIN;
class select_union;
class Procedure;
class st_select_lex_unit: public st_select_lex_node {
protected:
TABLE_LIST result_table_list;
@ -498,6 +511,14 @@ protected:
bool saved_error;
public:
// Ensures that at least all members used during cleanup() are initialized.
st_select_lex_unit()
: union_result(NULL), table(NULL), result(NULL),
cleaned(false),
fake_select_lex(NULL)
{
}
bool prepared, // prepare phase already performed for UNION (unit)
optimized, // optimize phase already performed for UNION (unit)
executed, // already executed