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| author | unknown <vva@eagle.mysql.r18.ru> | 2004-01-12 22:47:26 -0400 |
|---|---|---|
| committer | unknown <vva@eagle.mysql.r18.ru> | 2004-01-12 22:47:26 -0400 |
| commit | e1d5f62041deaf97e139e660bc57a0de784f76e6 (patch) | |
| tree | 9a2d1d70ecd1146084719b4ef4ae1d796c10ecea /sql/item_func.cc | |
| parent | cf2ecf37026b89640f539f2dc34a1d2f63501918 (diff) | |
| download | mariadb-git-e1d5f62041deaf97e139e660bc57a0de784f76e6.tar.gz | |
Fixed Bug #2338 Trigonometric arithmetic problem
by fixing optimizer bug with help of 'volatile' keyword
mysql-test/r/func_math.result:
added tests for BUG #2338 Trigonometric arithmetic problems
mysql-test/t/func_math.test:
added tests for BUG #2338 Trigonometric arithmetic problems
sql/item_func.cc:
added keyword volatile in Item_func_acos::val and Item_func_asin::val
to calm optimizer down and to avoid it's bug
Diffstat (limited to 'sql/item_func.cc')
| -rw-r--r-- | sql/item_func.cc | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/sql/item_func.cc b/sql/item_func.cc index 217768db2c5..28a1c428cab 100644 --- a/sql/item_func.cc +++ b/sql/item_func.cc @@ -456,7 +456,8 @@ double Item_func_pow::val() double Item_func_acos::val() { - double value=args[0]->val(); + // this 'volatile' was added as a fix for BUG #2338 to calm optimizer down + volatile double value=args[0]->val(); if ((null_value=(args[0]->null_value || (value < -1.0 || value > 1.0)))) return 0.0; return fix_result(acos(value)); @@ -464,7 +465,8 @@ double Item_func_acos::val() double Item_func_asin::val() { - double value=args[0]->val(); + // this 'volatile' was added as a fix for BUG #2338 to calm optimizer down + volatile double value=args[0]->val(); if ((null_value=(args[0]->null_value || (value < -1.0 || value > 1.0)))) return 0.0; return fix_result(asin(value)); |