TortoiseGit + Cygwin git: unified diff fails (cygheap read copy failed)

TortoiseGit + Cygwin git: unified diff fails (cygheap read copy failed)

[Gene Pavlovsky]

Hey everybody!

I'm using TortoiseGit with Cygwin git (Cygwin workarounds enabled in
advanced TortoiseGit settings). For the most part, everything works
correctly.
The only problem: in TortoiseGit log for any repository, right-click
any commit, pick "show changes as unified diff", there's an error
dialog:

```
Could not get unified diff.
   1 [main] git 2292 child_copy: cygheap read copy failed,
0x180302408..0x18030F230, done 0, windows pid 2292, Win32 error 6
411 [main] git 2292 C:\cygwin\bin\git.exe: *** fatal error - ccalloc
would have returned NULL
```

Actually I've had this several months ago, just never got around to
posting this to the list.

TortoiseGit 2.3.0.0
Cygwin 64-bit 2.876
Cygwin git 2.8.3-1
Windows 7 x64

Appreciate any help!
Thanks.

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Re: TortoiseGit + Cygwin git: unified diff fails (cygheap read copy failed)

[Csaba Raduly]

Hi Gene,

On Thu, Nov 17, 2016 at 12:42 AM, Gene Pavlovsky wrote:
> Hey everybody!
>
> I'm using TortoiseGit with Cygwin git (Cygwin workarounds enabled in
> advanced TortoiseGit settings). For the most part, everything works
> correctly.

Although this is probably unrelated, I've had problems with
TortoiseSVN and Cygwin's svn (not Git), because Tortoise uses DOS line
endings (\r\n) whereas Cygwin programs use Unix line endings (\n).

Csaba
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Re: TortoiseGit + Cygwin git: unified diff fails (cygheap read copy failed)

[Gene Pavlovsky]

>> I'm using TortoiseGit with Cygwin git (Cygwin workarounds enabled in
>> advanced TortoiseGit settings). For the most part, everything works
>> correctly.
>
> Although this is probably unrelated, I've had problems with
> TortoiseSVN and Cygwin's svn (not Git), because Tortoise uses DOS line
> endings (\r\n) whereas Cygwin programs use Unix line endings (\n).

TortoiseGit doesn't seem to have line endings-related problems (in
general), but who knows, maybe they missed a spot...
I'll post this issue to TortoiseGit's bug tracker. I wonder if anybody
else is using TortoiseGit with Cygwin's git and "Show changes as
unified diff" in TortoiseGit's log work for them?

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Re: TortoiseGit + Cygwin git: unified diff fails (cygheap read copy failed)

[Gene Pavlovsky]

On 17 November 2016 at 02:42, Gene Pavlovsky <gene.pavlovsky@gmail.com> wrote:
> Hey everybody!
>
> I'm using TortoiseGit with Cygwin git (Cygwin workarounds enabled in
> advanced TortoiseGit settings). For the most part, everything works
> correctly.
> The only problem: in TortoiseGit log for any repository, right-click
> any commit, pick "show changes as unified diff", there's an error
> dialog:
>
> ```
> Could not get unified diff.
>    1 [main] git 2292 child_copy: cygheap read copy failed,
> 0x180302408..0x18030F230, done 0, windows pid 2292, Win32 error 6
> 411 [main] git 2292 C:\cygwin\bin\git.exe: *** fatal error - ccalloc
> would have returned NULL
> ```
>
> Actually I've had this several months ago, just never got around to
> posting this to the list.

I've submitted an issue to the TortoiseGit issue tracker, the fix was
committed and it works now on my system.
https://gitlab.com/tortoisegit/tortoisegit/issues/2868
--Gene

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