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Bug#20752: BENCHMARK with many iterations returns too quickly

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In BENCHMARK(count, expr), count could overflow/wrap-around.
Patch changes to a sufficiently large data-type. Adds a warning
for negative count values.
This commit is contained in:
tnurnberg@mysql.com/white.intern.koehntopp.de
2008-02-24 01:31:54 +01:00
parent 730bea634f
commit 1ed076e41b
3 changed files with 26 additions and 4 deletions
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7
mysql-test/t/func_str.test
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@ -874,6 +874,13 @@ select benchmark(0, NULL);
select benchmark(100, NULL);
select benchmark(NULL, 1+1);
#
# Bug #20752: BENCHMARK with many iterations returns too quickly
#
# not a string, but belongs with the above Bug#22684
select benchmark(-1, 1);
#
# Please note:
# 1) The collation of the password is irrelevant, the encryption uses