[Image-SIG] Image.putdata, Python crash

[Rune Strand]

Hi,

Because of my lousy code/PIL newbieness or something completely 
different, Windows Python 2.4.3 crashes (in _imaging.pyd) after a call 
to  Image.putdata(a_list_of_ints).
Python gives no errors messages.

The image, a BMP file is written by PIL itself. I have thousands of 
them. I've tested several of them of them with same result.
Saving a copy of the file from Paint.exe etc. does not change anything.

The files are created by saving only the R band after Image.split(). 
They contain only two colours, 0 and 255.

The file(s) _does not_ verify. Image.verify() gives AttributeError, but 
Image.load() and .show() and all other methods works.

Simplyfied repro code below. UUE of the insulting BMP file included 
below. I'll happily send a copy of the BMP.

Rune

---------------- Script
import Image

bmp_file = '9_86955_(1).bmp'
img = Image.open(bmp_file)
#img.verify()  # gives AttributeError, see traceback below
#img.load() # no errors, and does not affect crashing

# 476 int elements, 0s and 255s
img_data = list(img.getdata())

# process data (ie. change some 0's to 255)
#img_data = process(img_data)

# crashes Python (module _imaging.pyd)
img.putdata(img_data)

# # .verify() traceback
"""
Traceback (most recent call last):
  File "K:\ocr\chars\fix\bug_repro.py", line 14, in ?
    img_data = list(img.getdata())
  File "C:\dev\Python\Lib\site-packages\PIL\Image.py", line 796, in getdata
    self.load()
  File "C:\dev\Python\Lib\site-packages\PIL\ImageFile.py", line 161, in load
    read = self.fp.read
AttributeError: 'NoneType' object has no attribute 'read'
"""
----------------



----------- UUE
begin 666 9_86955_(1).bmp
M0DUF!@       #8$   H    $0   !P    !  @      # "   !     0 
M   !     0        $! 0$" @(" P,# P0$! 0%!04%!@8&!@<'!P<(" @(
M"0D)"0H*"@H+"PL+# P,# T-#0T.#@X.#P\/#Q 0$! 1$1$1$A(2$A,3$Q,4
M%!04%145%186%A87%Q<7&!@8&!D9&1D:&AH:&QL;&QP<'!P='1T='AX>'A\?
M'Q\@(" @(2$A(2(B(B(C(R,C)"0D)"4E)24F)B8F)R<G)R at H*"@I*2DI*BHJ
M*BLK*RLL+"PL+2TM+2XN+BXO+R\O,# P,#$Q,3$R,C(R,S,S,S0T-#0U-34U
M-C8V-C<W-S<X.#@X.3DY.3HZ.CH[.SL[/#P\/#T]/3T^/CX^/S\_/T! 0$!!
M04%!0D)"0D-#0T-$1$1$145%149&1D9'1T='2$A(2$E)24E*2DI*2TM+2TQ,
M3$Q-34U-3DY.3D]/3T]04%!045%145)24E)34U-35%145%5555565E965U=7
M5UA86%A965E96EI:6EM;6UM<7%Q<75U=75Y>7EY?7U]?8&!@8&%A86%B8F)B
M8V-C8V1D9&1E965E9F9F9F=G9V=H:&AH:6EI:6IJ:FIK:VMK;&QL;&UM;6UN
M;FYN;V]O;W!P<'!Q<7%Q<G)R<G-S<W-T='1T=75U=79V=G9W=W=W>'AX>'EY
M>7EZ>GIZ>WM[>WQ\?'Q]?7U]?GY^?G]_?W^ @(" @8&!@8*"@H*#@X.#A(2$
MA(6%A86&AH:&AX>'AXB(B(B)B8F)BHJ*BHN+BXN,C(R,C8V-C8Z.CHZ/CX^/
MD)"0D)&1D9&2DI*2DY.3DY24E)25E965EI:6EI>7EY>8F)B8F9F9F9J:FIJ;
MFYN;G)R<G)V=G9V>GIZ>GY^?GZ"@H*"AH:&AHJ*BHJ.CHZ.DI*2DI:6EI::F
MIJ:GIZ>GJ*BHJ*FIJ:FJJJJJJZNKJZRLK*RMK:VMKJZNKJ^OKZ^PL+"PL;&Q
ML;*RLK*SL[.SM+2TM+6UM;6VMK:VM[>WM[BXN+BYN;FYNKJZNKN[N[N\O+R\
MO;V]O;Z^OKZ_O[^_P,# P,'!P<'"PL+"P\/#P\3$Q,3%Q<7%QL;&QL?'Q\?(
MR,C(R<G)R<K*RLK+R\O+S,S,S,W-S<W.SL[.S\_/S]#0T-#1T='1TM+2TM/3
MT]/4U-34U=75U=;6UM;7U]?7V-C8V-G9V=G:VMK:V]O;V]S<W-S=W=W=WM[>
MWM_?W]_ at X.#@X>'AX>+BXN+CX^/CY.3DY.7EY>7FYN;FY^?GY^CHZ.CIZ>GI
MZNKJZNOKZ^OL[.SL[>WM[>[N[N[O[^_O\/#P\/'Q\?'R\O+R\_/S\_3T]/3U
M]?7U]O;V]O?W]_?X^/CX^?GY^?KZ^OK[^_O[_/S\_/W]_?W^_O[^_____P 
M     /\ _____P          _________________P        #_________
M__________\      /_______P#___________\     ________________
M______\   #______________________P   /________\   #_________
M    ________     /________\   #______P      _________P     
M          #___\  /__                _____P#___\         ____
M_____________P      ____________________     /______________
M______\   #______________________P   /______________________
M     /_______P   /________\   #_________    _________P   /__
M_____P    #_________    _________P   /________\   #_________
M    _________P   /________\   #__P  ____    ________________
M_P#___\   #_____________________      #_____ /____\ _____P 
M        _P#_  #_  #___\                                    
2                       
 
end