Bug#11765923 58937: MANY VALGRIND ERRORS AFTER GROUPING BY RESULT OF DECIMAL COLUMN FUNCTION
Bug#11764671 57533: UNINITIALISED VALUES IN COPY_AND_CONVERT (SQL_STRING.CC) WITH CERTAIN CHA When ROUND evaluates decimal result it uses Item::decimal value as fraction value for the result. In some cases Item::decimal is greater than real result fraction value and uninitialised memory of result(decimal) buffer can be used in further calculations. Issue is introduced by Bug33143 fix. The fix is to remove erroneous assignment.
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@ -518,4 +518,26 @@ CREATE TABLE t1 SELECT CEIL(LINESTRINGFROMWKB(1) DIV NULL);
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DROP TABLE t1;
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CREATE TABLE t1 SELECT FLOOR(LINESTRINGFROMWKB(1) DIV NULL);
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DROP TABLE t1;
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#
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# Bug#11765923 58937: MANY VALGRIND ERRORS AFTER GROUPING BY RESULT OF DECIMAL COLUMN FUNCTION
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#
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CREATE TABLE t1(f1 DECIMAL(22,1));
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INSERT INTO t1 VALUES (0),(1);
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SELECT ROUND(f1, f1) FROM t1;
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ROUND(f1, f1)
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0.0
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1.0
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SELECT ROUND(f1, f1) FROM t1 GROUP BY 1;
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ROUND(f1, f1)
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0.0
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1.0
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DROP TABLE t1;
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#
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# Bug#11764671 57533: UNINITIALISED VALUES IN COPY_AND_CONVERT (SQL_STRING.CC) WITH CERTAIN CHA
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#
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SELECT ROUND(LEAST(15, -4939092, 0.2704), STDDEV('a'));
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ROUND(LEAST(15, -4939092, 0.2704), STDDEV('a'))
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-4939092.0000
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Warnings:
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Warning 1292 Truncated incorrect DOUBLE value: 'a'
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End of 5.1 tests
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@ -333,4 +333,20 @@ DROP TABLE t1;
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CREATE TABLE t1 SELECT FLOOR(LINESTRINGFROMWKB(1) DIV NULL);
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DROP TABLE t1;
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--echo #
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--echo # Bug#11765923 58937: MANY VALGRIND ERRORS AFTER GROUPING BY RESULT OF DECIMAL COLUMN FUNCTION
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--echo #
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CREATE TABLE t1(f1 DECIMAL(22,1));
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INSERT INTO t1 VALUES (0),(1);
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SELECT ROUND(f1, f1) FROM t1;
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SELECT ROUND(f1, f1) FROM t1 GROUP BY 1;
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DROP TABLE t1;
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--echo #
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--echo # Bug#11764671 57533: UNINITIALISED VALUES IN COPY_AND_CONVERT (SQL_STRING.CC) WITH CERTAIN CHA
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--echo #
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SELECT ROUND(LEAST(15, -4939092, 0.2704), STDDEV('a'));
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--echo End of 5.1 tests
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@ -2122,10 +2122,7 @@ my_decimal *Item_func_round::decimal_op(my_decimal *decimal_value)
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if (!(null_value= (args[0]->null_value || args[1]->null_value ||
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my_decimal_round(E_DEC_FATAL_ERROR, value, (int) dec,
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truncate, decimal_value) > 1)))
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{
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decimal_value->frac= decimals;
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return decimal_value;
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}
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return 0;
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}
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