A problem with perl and cygpixman-1-0.dll

[Zdzislaw Meglicki <zdzisiekm@sbcglobal.net>]

I have a problem with perl scripts that attempt to load cygpixman-1-0.dll. When 
running a test on PerlMagick-6.76 I get the following:

$ make test
PERL_DL_NONLAZY=1 /usr/bin/perl.exe "-MExtUtils::Command::MM" "-e" 
"test_harness(0, 'blib/lib', 'blib/arch')" t/*.t t/bzlib/*.t t/jpeg/*.t 
t/jng/*.t t/jp2/*.t t/png/*.t t/tiff/*.t t/x11/*.t t/zlib/*.t
t/blob.t .......... ok   
t/bzlib/read.t .... ok   
t/bzlib/write.t ... ok   
t/composite.t ..... ok     
t/filter.t ........ 1/58       3 [main] perl 7588 child_info_fork::abort: 
C:\cygwin\bin\cygpixman-1-0.dll: Loaded to different address: parent(0x4AAA0000) 
!= child(0x1720000)
      3 [main] perl 6824 child_info_fork::abort: 
C:\cygwin\bin\cygpixman-1-0.dll: Loaded to different address: parent(0x4AAA0000) 
!= child(0x2D0000)
t/filter.t ........ ok     
t/getattribute.t .. ok     
t/jng/read.t ...... ok     
t/jng/write.t ..... ok     
t/jp2/read.t ...... ok   
t/jpeg/read.t ..... ok   
t/jpeg/write.t .... ok   
t/montage.t .......       3 [main] perl 7028 child_info_fork::abort: 
C:\cygwin\bin\cygpixman-1-0.dll: Loaded to different address: parent(0x4AAA0000) 
!= child(0x410000)
t/montage.t ....... 1/19       1 [main] perl 6736 child_info_fork::abort: 
C:\cygwin\bin\cygpixman-1-0.dll: Loaded to different address: parent(0x4AAA0000) 
!= child(0x370000)
t/montage.t ....... 2/19       3 [main] perl 7788 child_info_fork::abort: 
C:\cygwin\bin\cygpixman-1-0.dll: Loaded to different address: parent(0x4AAA0000) 
!= child(0x410000)
      1 [main] perl 8140 child_info_fork::abort: 
C:\cygwin\bin\cygpixman-1-0.dll: Loaded to different address: parent(0x4AAA0000) 
!= child(0x410000)
t/montage.t ....... 4/19       2 [main] perl 2756 child_info_fork::abort: 
C:\cygwin\bin\cygpixman-1-0.dll: Loaded to different address: parent(0x4AAA0000) 
!= child(0x350000)
      2 [main] perl 7832 child_info_fork::abort: 
C:\cygwin\bin\cygpixman-1-0.dll: Loaded to different address: parent(0x4AAA0000) 
!= child(0x410000)
t/montage.t ....... 6/19       3 [main] perl 4632 child_info_fork::abort: 
C:\cygwin\bin\cygpixman-1-0.dll: Loaded to different address: parent(0x4AAA0000) 
!= child(0x410000)
t/montage.t ....... 7/19       2 [main] perl 2700 child_info_fork::abort: 
C:\cygwin\bin\cygpixman-1-0.dll: Loaded to different address: parent(0x4AAA0000) 
!= child(0x370000)
      3 [main] perl 8088 child_info_fork::abort: 
C:\cygwin\bin\cygpixman-1-0.dll: Loaded to different address: parent(0x4AAA0000) 
!= child(0x410000)
t/montage.t ....... 9/19       3 [main] perl 6916 child_info_fork::abort: 
C:\cygwin\bin\cygpixman-1-0.dll: Loaded to different address: parent(0x4AAA0000) 
!= child(0x350000)
t/montage.t ....... 10/19       2 [main] perl 3432 child_info_fork::abort: 
C:\cygwin\bin\cygpixman-1-0.dll: Loaded to different address: parent(0x4AAA0000) 
!= child(0x410000)
      3 [main] perl 200 child_info_fork::abort: C:\cygwin\bin\cygpixman-1-0.dll: 
Loaded to different address: parent(0x4AAA0000) != child(0x1770000)
t/montage.t ....... 12/19       2 [main] perl 2708 child_info_fork::abort: 
C:\cygwin\bin\cygpixman-1-0.dll: Loaded to different address: parent(0x4AAA0000) 
!= child(0x410000)
t/montage.t ....... 13/19       1 [main] perl 3520 child_info_fork::abort: 
C:\cygwin\bin\cygpixman-1-0.dll: Loaded to different address: parent(0x4AAA0000) 
!= child(0x410000)
      2 [main] perl 6456 child_info_fork::abort: 
C:\cygwin\bin\cygpixman-1-0.dll: Loaded to different address: parent(0x4AAA0000) 
!= child(0x410000)
t/montage.t ....... 15/19       2 [main] perl 3644 child_info_fork::abort: 
C:\cygwin\bin\cygpixman-1-0.dll: Loaded to different address: parent(0x4AAA0000) 
!= child(0x410000)
t/montage.t ....... 16/19       2 [main] perl 7220 child_info_fork::abort: 
C:\cygwin\bin\cygpixman-1-0.dll: Loaded to different address: parent(0x4AAA0000) 
!= child(0x1770000)
      3 [main] perl 6712 child_info_fork::abort: 
C:\cygwin\bin\cygpixman-1-0.dll: Loaded to different address: parent(0x4AAA0000) 
!= child(0x410000)
t/montage.t ....... 18/19       1 [main] perl 7604 child_info_fork::abort: 
C:\cygwin\bin\cygpixman-1-0.dll: Loaded to different address: parent(0x4AAA0000) 
!= child(0x410000)
t/montage.t ....... ok     
t/ping.t .......... ok   
t/png/read-16.t ... ok   
t/png/read.t ...... ok   
t/png/write-16.t .. ok   
t/png/write.t ..... ok   
t/read.t .......... ok     
t/setattribute.t .. ok     
t/tiff/read.t ..... ok     
t/tiff/write.t .... ok     
t/write.t ......... ok     
t/x11/read.t ...... ok   
t/x11/write.t ..... ok   
t/zlib/read.t ..... ok   
t/zlib/write.t .... ok   
All tests successful.
Files=26, Tests=360, 37 wallclock secs ( 0.19 usr  0.17 sys + 21.20 cusr 13.62 
csys = 35.18 CPU)
Result: PASS

root@Crawley ~/src/PerlMagick-6.76
$ 

Sometimes, see example t/filter.t, it takes one failed attempt, in the other 
example, t/montage.t, it takes many attempts. Eventually, cygpixman-1-0.dll gets 
loaded, I gather, because the test succeeds. I noticed the same problem with 
other perl scripts, e.g., the ones in LaTeXML.

What causes this problem. What package does cygpixman-1-0.dll belong to? Perhaps 
I need to reinstall it?

Zdzislaw (Gustav) Meglicki
Indiana University
http://perth.ovpit.indiana.edu/gustav

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