diff options
Diffstat (limited to 'sql/item_cmpfunc.cc')
| -rw-r--r-- | sql/item_cmpfunc.cc | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/sql/item_cmpfunc.cc b/sql/item_cmpfunc.cc index ddb116f548a..66354560756 100644 --- a/sql/item_cmpfunc.cc +++ b/sql/item_cmpfunc.cc @@ -432,10 +432,16 @@ int Arg_comparator::compare_e_binary_string() int Arg_comparator::compare_real() { - double val1= (*a)->val_real(); + /* + Fix yet another manifestation of Bug#2338. 'Volatile' will instruct + gcc to flush double values out of 80-bit Intel FPU registers before + performing the comparison. + */ + volatile double val1, val2; + val1= (*a)->val_real(); if (!(*a)->null_value) { - double val2= (*b)->val_real(); + val2= (*b)->val_real(); if (!(*b)->null_value) { owner->null_value= 0; |