ID: 9486
Updated by: jmoore
Reported By: [EMAIL PROTECTED]
Old-Status: Open
Status: Closed
Bug Type: Reproduceable crash
PHP Version: 4.0 Latest CVS (27/02/2001)
Assigned To:
Comments:
I just spent last 20 mins playing with this and cant reproduce what soever, please try
with 4.0.5 and latest CVS too and reopen bugreport if it still occurs I can get this
to work at all. Please also provide a simpler example script we dont need to know
everything that works just what doesnt.
- James
Previous Comments:
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[2001-02-27 15:49:34] [EMAIL PROTECTED]
I took the ease of your being able to run the tests via database into account. The
queries don't call any fields. They just call the concat() function. All you need to
do with the database is put in host, user, pass, and name of a valid database.
I haven't been able to reproduce it w/o the databse connection.
---------------------------------------------------------------------------
[2001-02-27 15:39:18] [EMAIL PROTECTED]
Can you possible reproduce it with a script that does not use databases? It's kinda
hard to reproduce this way for us.
---------------------------------------------------------------------------
[2001-02-27 15:16:25] [EMAIL PROTECTED]
<?php
# Hi:
#
# Running PHP 4.0.5-dev Feb 20 2001
# Windows NT 4.0 SP 6a
# Apache 1.3.6
# MySQL 3.23.32
#
# The problem does not exist in 4.0.4-dev Nov 23 2000.
#
# Problem arises when doing an isset() on a
# a multidimensional array inside a function
# that has that variable as an optional argument
# but the argument hasn't been set, so it
# defaults to ''.
#
# But, it's not that simple. Problem comes
# and goes depending on how much memory is
# being used.
#
# Also, situation is only happening when
# using results from mysql_field_name().
#
# In addition, sometimes the page gets
# created by PHP and sent to the browser,
# but PHP crashes anyway.
#
# I've already spent six hours trying to
# pinpoint what's going on, though haven't
# been able to hit the nail on the head yet.
#
# Good luck.
#
# --Dan
class Test {
var $H = 'localhost';
var $U = 'track';
var $P = 'flight9';
var $D = 'SessionTracker';
function Setup() {
$this->C = @mysql_connect("$this->H", "$this->U", "$this->P");
$this->Hand = @mysql_select_db("$this->D", $this->C);
$this->Res = @mysql_query("$this->Query",$this->C);
$this->Cols = @mysql_num_fields($this->Res);
}
function FieldName($FileName,$FileLine,$ColNum) {
if ( $Output = @mysql_field_name($this->Res, $ColNum) ) {
return $Output;
} else {
echo "Field Name Had Problem";
}
}
# BEGIN ALTERNATIVE TEST FUNCTIONS HERE...
# Uses MySQL data, but doesn't have the "$Col" argument.
function Good() {
for ($Count = 0; $Count < $this->Cols; $Count++) {
$FieldNames[] = $this->FieldName('test','here', $Count);
if ( !isset($Col[$FieldNames[$Count]]['hide']) ) {
$VisibleFields++;
echo "$Count = $FieldNames[$Count]. ";
}
}
}
# Doesn't use MySQL data, but uses "$Col" argument.
function NoProblem($Col='') {
for ($Count = 0; $Count < 3; $Count++) {
$FieldNames[] = 'dog';
$FieldNames[] = 'somename';
$FieldNames[] = 'cat';
if ( !isset($Col[$FieldNames[$Count]]['hide']) ) {
$VisibleFields++;
echo "$Count = $FieldNames[$Count]. ";
}
}
}
# This is the function which causes the problems.
# Uses MySQL data and has a "$Col" argument.
function Bad($Col='') {
for ($Count = 0; $Count < $this->Cols; $Count++) {
#############################
# "Field Name Call -- Short"
#
$FieldNames[] = $this->FieldName('test','here', $Count);
#############################
# "Field Name Call -- Long"
#
# $FieldNames[] = $this->FieldName("FieldName() had error when RSATbl() was
called by $FileName","$FileLine", $Count);
# PROBLEM HAPPENS ON NEXT LINE
# Commenting it and the closing } gets the
# problems to stop.
if ( !isset($Col[$FieldNames[$Count]]['hide']) ) {
# Commenting out the following line
# completely shifts the pattern of what
# is okay, crashes and infinite loops!
$VisibleFields++;
echo "$Count = $FieldNames[$Count]. ";
}
}# End of for $Count
}# End of Bad()
}# End of class
$SQL = new Test;
# TEST SCENARIOS FOR RUNNING THE BAD() FUNCTION
# WHEN: -----------------------------------
# "Field Name Call -- Short"
# "$VisibleFields++;" is open
#
# Okay if 1 or 2 Columns:
# $SQL->Query = "SELECT concat('hi') as H";
# $SQL->Query = "SELECT concat('hi') as H, concat('bye') as B";
# Infinite Loop if 3 Columns:
# $SQL->Query = "SELECT concat('hi') as H, concat('bye') as B, concat('why') as W";
# Crashes if 4 Columns:
$SQL->Query = "SELECT concat('hi') as H, concat('bye') as B, concat('why') as W,
concat('oh') as O";
# WHEN: -----------------------------------
# "Field Name Call -- Long"
# "$VisibleFields++;" is open
#
# Okay if 1 Column:
# $SQL->Query = "SELECT concat('hi') as H";
# Infinite Loop if 2 Columns:
# $SQL->Query = "SELECT concat('hi') as H, concat('bye') as B";
# Crash if 3 or more Columns:
# $SQL->Query = "SELECT concat('hi') as H, concat('bye') as B, concat('why') as W";
# $SQL->Query = "SELECT concat('hi') as H, concat('bye') as B, concat('why') as W,
concat('oh') as O";
# WHEN: -----------------------------------
# "Field Name Call -- Long"
# "$VisibleFields++;" is commented out
#
# Okay if 1 Column:
# $SQL->Query = "SELECT concat('hi') as H";
# Infinite Loop if 2 or 3 Columns:
# $SQL->Query = "SELECT concat('hi') as H, concat('bye') as B";
# $SQL->Query = "SELECT concat('hi') as H, concat('bye') as B, concat('why') as W";
# Crashes if 4 Columns:
# $SQL->Query = "SELECT concat('hi') as H, concat('bye') as B, concat('why') as W,
concat('oh') as O";
# NOTE: When "Infinite Loop" happens, PHP keeps
# going and going. Trying to "End Process" in
# Task Manager won't kill it. Only way to stop it
# is to reboot.
#
# This situation has hindered my ability to completely
# debug the problem due to the time involved with
# shutting down and rebooting.
#
# SUGGESTION: Make PHP killable via Task Manager.
# Establish the MySQL connection and execute the query.
$SQL->Setup();
# Call the problematic function.
$SQL->Bad();
# Call the plagued function, but set the argument.
# $Arg['H']['hide'] = 'N';
# $SQL->Bad($Arg);
# Call the safe functions.
# $SQL->Good();
# $SQL->NoProblem();
/*
DR WATSON REPORT WHEN:
"Field Name Call -- Short"
"$VisibleFields++;" is open
Query String: $SQL->Query = "SELECT concat('hi') as H,
concat('bye') as B, concat('why') as W, concat('oh') as O";
Application exception occurred:
App: (pid=228)
When: 2/27/2001 @ 15:15:2.88
Exception number: c0000005 (access violation)
*----> System Information <----*
Computer Name: BASE
User Name: SYSTEM
Number of Processors: 1
Processor Type: x86 Family 6 Model 3 Stepping 4
Windows Version: 4.0
Current Build: 1381
Service Pack: 6
Current Type: Uniprocessor Free
Registered Organization: Analysis and Solutions Company
Registered Owner: Daniel Convissor
*----> Task List <----*
0 Idle.exe
2 System.exe
24 SMSS.exe
32 CSRSS.exe
38 WINLOGON.exe
46 SERVICES.exe
49 LSASS.exe
75 SPOOLSS.exe
92 Apache.exe
79 Apache.exe
90 ubsched.exe
100 mysqld.exe
154 NPSSVC.exe
160 RPCSS.exe
166 TAPISRV.exe
175 RASMAN.exe
178 mstask.exe
186 PSTORES.exe
73 NDDEAGNT.exe
211 EXPLORER.exe
220 directcd.exe
222 hpcron.exe
213 LOADWC.exe
218 PGPtray.exe
70 NOTEPAD.exe
86 netscape.exe
228 php.exe
239 DRWTSN32.exe
0 _Total.exe
(00400000 - 00400000)
(77f60000 - 77fbe000) dllntdll.dbg
(10000000 - 10000000)
(77f00000 - 77f5e000) dllkernel32.dbg
(77e70000 - 77ec5000) dlluser32.dbg
(77ed0000 - 77efc000) dllgdi32.dbg
(77dc0000 - 77dff000) dlladvapi32.dbg
(77e10000 - 77e67000) dllrpcrt4.dbg
(776d0000 - 776d8000) dllwsock32.dbg
(776b0000 - 776c4000) dllws2_32.dbg
(78000000 - 78040000)
(776a0000 - 776a7000) dllws2help.dbg
(77b20000 - 77bd7000) dllole32.dbg
(65340000 - 653d2000) oleaut32.dbg
(6a980000 - 6a9b4000) odbc32.dbg
(71700000 - 7178a000) COMCTL32.dbg
(77c40000 - 77d7c000) dllshell32.dbg
(77d80000 - 77db2000) dllcomdlg32.dbg
(77a90000 - 77a9b000) dllversion.dbg
(779c0000 - 779c8000) dlllz32.dbg
(780a0000 - 780b2000)
(04a00000 - 04a13000) ..RESUSODBCLAN\ndebug32ODBCINT.dll
(74ff0000 - 74ffe000) dllrnr20.dbg
(77bf0000 - 77bf7000) dllrpcltc1.dbg
(75360000 - 75367000) dllrasadhlp.dbg
(77660000 - 7766f000) dllmsafd.dbg
(77690000 - 77699000) dllwshtcpip.dbg
State Dump for Thread Id 0xee
eax=74736574 ebx=007b6d70 ecx=007f0d20 edx=007f0d20 esi=74736574 edi=007b99a4
eip=10089327 esp=0012fe8c ebp=00000004 iopl=0 nv up ei pl nz na po nc
cs=001b ss=0023 ds=0023 es=0023 fs=0038 gs=0000 efl=00000206
function: <nosymbols>
10089309 6a00 push 0x0
1008930b 50 push eax
1008930c e85f470000 call 1008da70
10089311 8bd8 mov ebx,eax
10089313 83c408 add esp,0x8
10089316 bd04000000 mov ebp,0x4
1008931b 8dbb342c0000 lea edi,[ebx+0x2c34] ds:007b99a4=007f0690
10089321 8b07 mov eax,[edi] ds:007b99a4=007f0690
10089323 85c0 test eax,eax
10089325 7411 jz 10089338
FAULT ->10089327 8b30 mov esi,[eax] ds:74736574=????????
10089329 50 push eax
1008932a e891fbffff call 10088ec0
1008932f 83c404 add esp,0x4
10089332 8bc6 mov eax,esi
10089334 85f6 test esi,esi
10089336 75ef jnz 10089327
10089338 c70700000000 mov dword ptr [edi],0x0 ds:007b99a4=007f0690
1008933e 83c704 add edi,0x4
10089341 4d dec ebp
10089342 75dd jnz 10089321
10089344 8b03 mov eax,[ebx] ds:007b6d70=007f3520
*----> Stack Back Trace <----*
FramePtr ReturnAd Param#1 Param#2 Param#3 Param#4 Function Name
00000004 00000000 00000000 00000000 00000000 00000000 <nosymbols>
*----> Raw Stack Dump <----*
0012fe8c 24 20 02 78 e4 15 7c 00 - bc fe 12 00 01 00 00 00 $ .x..|.........
0012fe9c f5 26 00 10 00 00 00 00 - 00 00 00 00 a0 02 7c 00 .&............|.
0012feac 10 1a 7c 00 a0 02 7c 00 - b0 35 7c 00 b0 14 7c 00 ..|...|..5|...|.
0012febc 4c ff 12 00 4f 1b 40 00 - 00 00 00 00 00 00 00 00 L...O.@.........
0012fecc 00 00 00 00 00 f0 fd 7f - 00 00 00 00 00 00 00 00 ................
0012fedc 04 00 00 00 00 00 00 00 - 00 00 00 00 8c cc 00 78 ...............x
0012feec 50 33 13 00 f0 b3 03 78 - 00 f0 fd 7f 10 05 7c 00 P3.....x......|.
0012fefc 34 ff 12 00 03 6f f6 77 - 10 ed 7c 00 00 00 00 00 4....o.w..|.....
0012ff0c 40 0d 7f 00 00 ff ff ff - 00 00 00 00 01 00 00 00 @...............
0012ff1c 00 00 00 00 01 00 00 00 - 10 05 7c 00 00 f0 fd 7f ..........|.....
0012ff2c 00 00 00 00 a0 02 7c 00 - b0 14 7c 00 b0 35 7c 00 ......|...|..5|.
0012ff3c 01 00 00 00 00 00 00 00 - 00 00 00 00 10 1a 7c 00 ..............|.
0012ff4c c0 ff 12 00 cb 20 40 00 - 01 00 00 00 10 05 7c 00 ..... @.......|.
0012ff5c d0 0e 7c 00 00 40 40 00 - 04 40 40 00 a4 ff 12 00 ..|..@@..@@.....
0012ff6c 94 ff 12 00 a0 ff 12 00 - 00 00 00 00 98 ff 12 00 ................
0012ff7c 08 40 40 00 0c 40 40 00 - 00 00 00 00 00 00 00 00 .@@..@@.........
0012ff8c 00 f0 fd 7f 05 00 00 c0 - 10 05 7c 00 00 00 00 00 ..........|.....
0012ff9c 45 c2 11 80 d0 0e 7c 00 - 01 00 00 00 84 ff 12 00 E.....|.........
0012ffac d4 fc 12 00 e0 ff 12 00 - 20 21 40 00 50 31 40 00 ........ [email protected]@.
0012ffbc 00 00 00 00 f0 ff 12 00 - ea b9 f1 77 00 00 00 00 ...........w....
State Dump for Thread Id 0xeb
eax=00007530 ebx=00000000 ecx=000000ee edx=00000000 esi=77e726e5 edi=00fdff6c
eip=77e72397 esp=00fdff24 ebp=00fdff48 iopl=0 nv up ei pl zr na po nc
cs=001b ss=0023 ds=0023 es=0023 fs=0038 gs=0000 efl=00000246
function: InvalidateRect
77e7237e b89e110000 mov eax,0x119e
77e72383 8d542404 lea edx,[esp+0x4] ss:0200e92b=????????
77e72387 cd2e int 2e
77e72389 c20c00 ret 0xc
77e7238c b885110000 mov eax,0x1185
77e72391 8d542404 lea edx,[esp+0x4] ss:0200e92b=????????
77e72395 cd2e int 2e
77e72397 c21400 ret 0x14
*----> Stack Back Trace <----*
FramePtr ReturnAd Param#1 Param#2 Param#3 Param#4 Function Name
00fdff48 10093425 00fdff6c 00000000 00000000 00000000 user32!InvalidateRect
*/
?>
---------------------------------------------------------------------------
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comments, please view the bug report online.
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