Re^11: if Digest::SHA1 loaded Can't load LibXML/LibXML.dll Invalid access to memory location

in reply to Re^10: if Digest::SHA1 loaded Can't load LibXML/LibXML.dll Invalid access to memory location
in thread if Digest::SHA1 loaded Can't load LibXML/LibXML.dll Invalid access to memory location

Same messsage :)

$ perl badcrabs.txt
ret=1849688064 glr=2

$ perl -MDigest::SHA1 badcrabs.txt
ret=0 glr=193

[download]

In depends.exe its now

LDR: LdrRelocateImageWithBias() failed 0xc000007b
LDR: OldBase     : 6E400000
LDR: NewBase     : 00A90000
LDR: Diff        : 0xffffffff92690000
LDR: NextOffset  : 00CC9F90
LDR: *NextOffset : 0x302e
LDR: SizeOfBlock : 0x5c

Compared to -MDigest::SHA1 -MXML::LibXML

LDR: LdrRelocateImageWithBias() failed 0xc000007b
LDR: OldBase     : 6E400000
LDR: NewBase     : 010A0000
LDR: Diff        : 0xffffffff92ca0000
LDR: NextOffset  : 012D9F90
LDR: *NextOffset : 0x302e
LDR: SizeOfBlock : 0x5c

Apparently LdrRelocate... errors happen ( Weird problem loading a dll with win32 LoadLibrary() function ) commonly with cygwin , and they recommend using some "rebaseall" shell script, and I saw they do some rebase-ing for MakeMaker/cygwin

So I look through my dlls $ perl -lne " chomp; print; print qx{objdump -x $_ |grep ImageBase }; " dlls.txt and both Digest/SHA1/SHA1.dll and auto/XML/LibXML/LibXML.dll share ImageBase 6e400000

Not sure if this is a problem but http://www.sourceware.org/ml/cygwin-apps/2011-07/msg00002.html / http://www.sourceware.org/ml/cygwin/2010-07/msg00258.html / perl5140delta suggests this collision is the problem , so I'll need to rebase, so I try that with the default rebase-2.4.2 address

perl -pi.orig -e " s{^(LDDLFLAGS = )}{$1 -Wl,--image-base=0x70000000 }; " Makefile

and it worked!!!!!

*whew*

So from time to time I'll have to rebase a few dlls if I stick with this old OS

Comment on Re^11: if Digest::SHA1 loaded Can't load LibXML/LibXML.dll Invalid access to memory location Select or Download Code
Re^12: if Digest::SHA1 loaded Can't load LibXML/LibXML.dll Invalid access to memory location by bulk88 (Deacon) on Dec 06, 2012 at 16:55 UTC
Some reverse engineering says the only way to get a "LdrRelocateImageWithBias() failed 0xc000007b" is to have LdrProcessRelocationBlockLongLong fail, the error in reactos is different from windows, but http://code.google.com/searchframe#S3vzerue4i0/trunk/reactos/lib/rtl/image.c&q=LdrRelocateImageWithBias%20package:reactos-mirror\.googlecode\.com&l=484 in Windows causes LdrRelocateImageWithBias() failed 0xc000007b. http://code.google.com/searchframe#S3vzerue4i0/trunk/reactos/lib/rtl/image.c&q=LdrProcessRelocationBlockLongLong%20package:reactos-mirror%5C.googlecode%5C.com&l=364. So its a GCC bug, not Perl related. GCC created a relocation entry http://source.winehq.org/source/include/winnt.h#L3027 for an relocation type unknown to 32 bit x86 windows. Which is the rogue entry, I don't know since I dont have the DLL, you do. You can try a "dumpbin /relocations" and post the contents, or analyze them yourself.	[reply]
Re^13: if Digest::SHA1 loaded Can't load LibXML/LibXML.dll Invalid access to memory location by Anonymous Monk on Dec 06, 2012 at 18:29 UTC
GCC created a relocation entry http://source.winehq.org/source/include/winnt.h#L3027 for an relocation type unknown to 32 bit x86 windows. Which is the rogue entry, I don't know since I dont have the DLL, you do. You can try a "dumpbin /relocations" and post the contents, or analyze them yourself. What would I be looking for? objdump doesn't list any unknown types, without -s its `339 ABSOLUTE 44811 HIGHLOW` [download] about ~2MB worth of text With -s its `494 ABSOLUTE 75652 HIGHLOW` [download] I could send you the dlls (if you know a no-hassle service), but rebasing seems to have fixed it, or was that just coincidence?	[reply] [d/l] [select]
Re^14: if Digest::SHA1 loaded Can't load LibXML/LibXML.dll Invalid access to memory location by bulk88 (Deacon) on Dec 06, 2012 at 22:20 UTC
Rebasing it fixed it because it didnt have to be rebased by windows! Its bugs with GCC.	[reply]
Re^15: if Digest::SHA1 loaded Can't load LibXML/LibXML.dll Invalid access to memory location by Anonymous Monk on Jan 04, 2013 at 01:07 UTC
Re^16: if Digest::SHA1 loaded Can't load LibXML/LibXML.dll Invalid access to memory location by bulk88 (Deacon) on Jan 04, 2013 at 04:25 UTC
Some notes below your chosen depth have not been shown here
Re^14: if Digest::SHA1 loaded Can't load LibXML/LibXML.dll Invalid access to memory location by syphilis (Canon) on Jan 05, 2013 at 03:15 UTC
rebasing seems to have fixed it Pardon the dumb question ... but how does one do this rebasing ? There's a few (native Win32, not Cygwin) dll's that I'd like to try this on, but I don't understand how to go about it. (A step-by-step guide would be handy.) Cheers, Rob	[reply]
Re^15: if Digest::SHA1 loaded Can't load LibXML/LibXML.dll Invalid access to memory location by Anonymous Monk on Jan 05, 2013 at 09:16 UTC
Re^16: if Digest::SHA1 loaded Can't load LibXML/LibXML.dll Invalid access to memory location by Anonymous Monk on Jan 05, 2013 at 11:01 UTC
Re^16: if Digest::SHA1 loaded Can't load LibXML/LibXML.dll Invalid access to memory location by syphilis (Canon) on Jan 06, 2013 at 05:52 UTC
Some notes below your chosen depth have not been shown here


The stupid question is the question not asked
	PerlMonks

Re^11: if Digest::SHA1 loaded Can't load LibXML/LibXML.dll Invalid access to memory location

The best material for plates (tableware) is: