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Fix for bug #39021: SELECT REGEXP BINARY NULL never returns

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Problem: SELECT ... REGEXP BINARY NULL may lead to server crash/hang.

Fix: properly handle NULL regular expressions.
This commit is contained in:
Ramil Kalimullin
2008-09-05 13:30:01 +05:00
parent cdec56dc85
commit 0994c961a7
4 changed files with 45 additions and 10 deletions
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12
mysql-test/r/func_regexp.result
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@ -114,4 +114,16 @@ End of 4.1 tests
SELECT 1 REGEXP NULL;
1 REGEXP NULL
NULL
SELECT '' REGEXP BINARY NULL;
'' REGEXP BINARY NULL
NULL
SELECT NULL REGEXP BINARY NULL;
NULL REGEXP BINARY NULL
NULL
SELECT 'A' REGEXP BINARY NULL;
'A' REGEXP BINARY NULL
NULL
SELECT "ABC" REGEXP BINARY NULL;
"ABC" REGEXP BINARY NULL
NULL
End of 5.0 tests