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merge 5.0-security => 5.1 security

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This commit is contained in:
Tor Didriksen
2011-10-14 10:44:27 +02:00
parent ff80795871 ea2cd838be
commit cf66b6511f
4 changed files with 108 additions and 8 deletions
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30
sql/my_decimal.h
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@ -93,12 +93,31 @@ inline int my_decimal_int_part(uint precision, uint decimals)
class my_decimal :public decimal_t
{
/*
Several of the routines in strings/decimal.c have had buffer
overrun/underrun problems. These are *not* caught by valgrind.
To catch them, we allocate dummy fields around the buffer,
and test that their values do not change.
*/
#if !defined(DBUG_OFF)
int foo1;
#endif
decimal_digit_t buffer[DECIMAL_BUFF_LENGTH];
#if !defined(DBUG_OFF)
int foo2;
static const int test_value= 123;
#endif
public:
void init()
{
#if !defined(DBUG_OFF)
foo1= test_value;
foo2= test_value;
#endif
len= DECIMAL_BUFF_LENGTH;
buf= buffer;
}
@ -107,6 +126,17 @@ public:
{
init();
}
~my_decimal()
{
sanity_check();
}
void sanity_check()
{
DBUG_ASSERT(foo1 == test_value);
DBUG_ASSERT(foo2 == test_value);
}
void fix_buffer_pointer() { buf= buffer; }
bool sign() const { return decimal_t::sign; }