From 0b706e54bb321cbf88571b03a6fc64c3fecc3d84 Mon Sep 17 00:00:00 2001
From: Tor Didriksen <tor.didriksen@oracle.com>
Date: Mon, 26 Sep 2011 14:21:28 +0200
Subject: [PATCH] Bug#12985030 SIMPLE QUERY WITH DECIMAL NUMBERS LEAKS MEMORY

Re-write the test, to make pushbuild green.
Workaraound for broken pow() function on:
SunOS tyr40 5.10 Generic_127112-05 i86pc i386 i86pc

(dbx) where
current thread: t@1
=>[1] Item_func_pow::val_real(this = 0x238af20) (optimized), at 0xaa8d13 (line ~1980) in "item_func.cc"

(dbx) print pow(1.01, 1.0)
pow(1.01, 1) = 1.01
(dbx) print pow(1.01, 10.0)
pow(1.01, 10) = 1.1046221254112
(dbx) print pow(1.01, 100.0)
pow(1.01, 100) = 2.7048138294215
(dbx) print pow(1.01, 1000.0)
pow(1.01, 1000) = 20959.155637814
(dbx) print pow(1.01, 10000.0)
pow(1.01, 10000) = 1.635828711189e+43
(dbx) print pow(1.01, 100000.0)
pow(1.01, 100000) = Infinity
(dbx) print pow(1.01, 1000000.0)
pow(1.01, 1000000) = Infinity
(dbx) print pow(1.01, 10000000.0)
pow(1.01, 10000000) = Infinity
(dbx) print pow(1.01, 100000000.0)
pow(1.01, 100000000) = Infinity
(dbx) print pow(1.01, 1000000000.0)
pow(1.01, 1000000000) = 0.0
(dbx) print pow(1.01, 10000000000.0)
pow(1.01, 10000000000) = 0.0

(dbx) print value
value = 1.0111111111111
(dbx) print val2
val2 = 8796093022207.0

(dbx) print pow(value, val2)
pow(value, val2) = 0.0

so it seems pow(1.01, y)
returns Infinity for large y, but then starts to return 0.0 for even larger values of y.
---
 mysql-test/r/func_str.result | 4 ++--
 mysql-test/t/func_str.test   | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/mysql-test/r/func_str.result b/mysql-test/r/func_str.result
index 755763e6994..5d3ac26fe3d 100644
--- a/mysql-test/r/func_str.result
+++ b/mysql-test/r/func_str.result
@@ -2803,8 +2803,8 @@ SELECT ((rpad(1.0,2048,1)) = ('4(') ^ (0.1));
 Warnings:
 Warning	1292	Truncated incorrect INTEGER value: '4('
 SELECT
-pow((rpad(1.0,2048,1)),(b'1111111111111111111111111111111111111111111'));
-ERROR 22003: DOUBLE value is out of range in 'pow(rpad(1.0,2048,1),0x07ffffffffff)'
+pow((rpad(10.0,2048,1)),(b'1111111111111111111111111111111111111111111'));
+ERROR 22003: DOUBLE value is out of range in 'pow(rpad(10.0,2048,1),0x07ffffffffff)'
 SELECT ((rpad(1.0,2048,1)) + (0) ^ ('../'));
 ((rpad(1.0,2048,1)) + (0) ^ ('../'))
 1.011111111111111
diff --git a/mysql-test/t/func_str.test b/mysql-test/t/func_str.test
index 2a14648d6f6..bb22366a98d 100644
--- a/mysql-test/t/func_str.test
+++ b/mysql-test/t/func_str.test
@@ -1448,7 +1448,7 @@ SELECT ((rpad(1.0,2048,1)) = ('4(') ^ (0.1));
 
 --error 1690
 SELECT
-pow((rpad(1.0,2048,1)),(b'1111111111111111111111111111111111111111111'));
+pow((rpad(10.0,2048,1)),(b'1111111111111111111111111111111111111111111'));
 SELECT ((rpad(1.0,2048,1)) + (0) ^ ('../'));
 SELECT stddev_samp(rpad(1.0,2048,1));
 SELECT ((127.1) not in ((rpad(1.0,2048,1)),(''),(-1.1)));