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| author | unknown <gkodinov@mysql.com> | 2006-07-06 13:18:05 +0300 |
|---|---|---|
| committer | unknown <gkodinov@mysql.com> | 2006-07-06 13:18:05 +0300 |
| commit | 8e354677a81580fc7bd1ba4e3f6c7c426ed08c42 (patch) | |
| tree | 2e3ef4ddaedcb26307cc9412256ab6f787169763 /mysql-test/t/select.test | |
| parent | 3cf92fb7d67b22f33f4846ecf68c3f56c301cc20 (diff) | |
| download | mariadb-git-8e354677a81580fc7bd1ba4e3f6c7c426ed08c42.tar.gz | |
Bug #20569 Garbage in DECIMAL results from some mathematical functions
Adding decimal "digits" in multiplication resulted in signed overflow and
producing wrong results.
Fixed by using large enough buffers and intermediary result types :
dec2 (currently longlong) to hold result of adding decimal "digits"
(currently int32).
mysql-test/r/select.result:
Bug #20569 Garbage in DECIMAL results from some mathematical functions
* test suite for the bug
mysql-test/t/select.test:
Bug #20569 Garbage in DECIMAL results from some mathematical functions
* test suite for the bug
strings/decimal.c:
Bug #20569 Garbage in DECIMAL results from some mathematical functions
* fixed the overflow in adding decimal "digits"
Diffstat (limited to 'mysql-test/t/select.test')
| -rw-r--r-- | mysql-test/t/select.test | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/mysql-test/t/select.test b/mysql-test/t/select.test index b75d0dd8bb6..b44f682c02e 100644 --- a/mysql-test/t/select.test +++ b/mysql-test/t/select.test @@ -2901,3 +2901,8 @@ from t1 left outer join t2 on t1.a = t2.c and t2.b <> 1 where t1.b <> 1 order by t1.a; drop table t1,t2; + +# +# Bug #20569: Garbage in DECIMAL results from some mathematical functions +# +SELECT 0.9888889889 * 1.011111411911; |