cygheap base mismatch detected

Mark Geisert mark@maxrnd.com
Sat Feb 18 14:33:00 GMT 2006


On Fri, 17 Feb 2006, Dill, Jens (END-CHI) wrote:
[...]
> I did try rebaseall.  It told me all the Oracle DLLs were not
> rebaseable.  The -v output is included below.
[...]
>
> /usr/bin/tclpip84.dll: skipped because not rebaseable
> /usr/share/terminfo/a/ansi+sgrso: skipped because not rebaseable
> /usr/share/terminfo/c/cons60-iso: skipped because not rebaseable
> /usr/share/terminfo/x/xterm-boldso: skipped because not rebaseable
> /usr/share/xemacs/xemacs-packages/etc/psgml-dtds/ISO_8879-1986/entities/ISOa
> mso: skipped because not rebaseable
> /cygdrive/d/oracle/app/oracle/product/9.2.0/bin/orasql9.dll: skipped because
> not rebaseable
> /cygdrive/d/oracle/app/oracle/product/9.2.0/bin/oracore9.dll: skipped
> because not rebaseable
> /cygdrive/d/oracle/app/oracle/product/9.2.0/bin/oranls9.dll: skipped because
> not rebaseable
> /cygdrive/d/oracle/app/oracle/product/9.2.0/bin/oraunls9.dll: skipped
> because not rebaseable
> /cygdrive/c/WINDOWS/system32/MSVCRT.dll: skipped because not rebaseable
[...]

Rebaseall calls rebase, and rebase may be failing on some or all of these 
because it has an outdated idea of where the IMAGE_NT_SIGNATURE is in 
image files.

The code at /src/rebase-2.3.1/rebase.c:255 assumes the signature is at 
offset 0x80 in the image.  This was true in the early Windows days but has 
long since been generalized.  The technique nowadays is to obtain the 
short integer value e_lfanew at offset 0x3C in the image, and use that as 
the offset to check for the signature.

I see that the /usr/bin/tclpip84.dll you mention has an e_lfanew value of 
0x80, so rebase must have some other issue with that file.  But maybe your 
Oracle DLLs use the more modern image layout.
HTH,

..mark

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