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A patch for Bug#45118 (mysqld.exe crashed in debug mode

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on Windows in dbug.c) -- part 2: a patch for the DBUG subsystem
to detect misuse of DBUG_ENTER / DBUG_RETURN macros.
5.1 version.
This commit is contained in:
Alexander Nozdrin
2009-09-10 11:40:57 +04:00
parent d92b2238f9
commit 96c8843514
8 changed files with 144 additions and 73 deletions
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51
include/my_dbug.h
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@@ -16,6 +16,29 @@
#ifndef _dbug_h
#define _dbug_h
#if defined(__cplusplus) && !defined(DBUG_OFF)
class Dbug_violation_helper
{
public:
inline Dbug_violation_helper() :
_entered(TRUE)
{ }
inline ~Dbug_violation_helper()
{
assert(!_entered);
}
inline void leave()
{
_entered= FALSE;
}
private:
bool _entered;
};
#endif /* C++ */
#ifdef __cplusplus
extern "C" {
#endif
@@ -47,11 +70,31 @@ extern void _db_lock_file_(void);
extern void _db_unlock_file_(void);
extern FILE *_db_fp_(void);
#define DBUG_ENTER(a) const char *_db_func_, *_db_file_; uint _db_level_; \
char **_db_framep_; \
_db_enter_ (a,__FILE__,__LINE__,&_db_func_,&_db_file_,&_db_level_, \
&_db_framep_)
#ifdef __cplusplus
#define DBUG_ENTER(a) \
const char *_db_func_, *_db_file_; \
uint _db_level_; \
char **_db_framep_; \
Dbug_violation_helper dbug_violation_helper; \
_db_enter_ (a, __FILE__, __LINE__, &_db_func_, &_db_file_, \
&_db_level_, &_db_framep_)
#define DBUG_VIOLATION_HELPER_LEAVE dbug_violation_helper.leave()
#else /* C */
#define DBUG_ENTER(a) \
const char *_db_func_, *_db_file_; \
uint _db_level_; \
char **_db_framep_; \
_db_enter_ (a, __FILE__, __LINE__, &_db_func_, &_db_file_, \
&_db_level_, &_db_framep_)
#define DBUG_VIOLATION_HELPER_LEAVE do { } while(0)
#endif /* C++ */
#define DBUG_LEAVE \
DBUG_VIOLATION_HELPER_LEAVE; \
_db_return_ (__LINE__, &_db_func_, &_db_file_, &_db_level_)
#define DBUG_RETURN(a1) do {DBUG_LEAVE; return(a1);} while(0)
#define DBUG_VOID_RETURN do {DBUG_LEAVE; return;} while(0)