change in handling quotes in cygwin package from 3.1.4-1 to 3.1.5-1

Josh Thompson josh_thompson@ncsu.edu
Tue Jul 21 16:45:02 GMT 2020


On Monday, July 6, 2020 2:15:49 PM EDT Corinna Vinschen wrote:
> On Jul  6 10:14, Josh Thompson wrote:
> > > > On Monday, June 22, 2020 4:11:35 PM EDT Ken Brown wrote:
> > > > > On 6/15/2020 12:21 PM, Josh Thompson wrote:
> > > > > [...]
> > > > > 
> > > > > > 3.1.4:
> > > > > > $ cmd.exe /c "echo \""
> > > > > > "
> > > > > > 
> > > > > > 3.1.5:
> > > > > > $ cmd.exe /c "echo \""
> > > > > > \"
> > > > > 
> > > > > [...]
> > > > > After installing the rebuilt 3.1.4, however, the cmd.exe call above
> > > > > exhibits the "3.1.5" behavior rather than the "3.1.4" behavior.  I
> > > > > can't see anything in the patches that would explain this.  I
> > > > > thought
> > > > > maybe it was a compiler optimization problem, but rebuilding without
> > > > > optimization doesn't change anything.
> > > > 
> > > > [...]
> > > > It sounds like it will be difficult to change the quote behavior.  So,
> > > > we'll work to get VCL updated to handle the new behavior.
> > > 
> > > I have a fix for that.  It's a long standing bug, a buffer overrun,
> > > which seem to have had no effect pre-3.1.5 only because the older GCC
> > > toolchain had a subtily different stack allocation strategy.
> > > 
> > > I uploaded developer snapshots to https://cygwin.com/snapshots/
> > > for testing.  Please give this a try and report back.
> > > 
> > > If this fixes your problem, the bug is serious enough to qualify for
> > > a Cygwin 3.1.6 RSN.
> > 
> > Thank you for this!  I can confirm that replacing cygwin1.dll with the
> > cygwin1-20200706.dll that you uploaded to the snapshot site fixes the
> > quote
> > issue.
> > 
> > I upgraded an installation I had to 3.1.5-1 and tested that I was seeing
> > the problem by running
> > 
> > cmd.exe /c "echo \""
> > \"
> > 
> > Next, I downloaded, uncompressed, and overwrote cygwin1.dll with
> > cygwin1-20200706.dll and tested again
> > 
> > cmd.exe /c "echo \""
> > "
> > 
> > Great job working through that issue.
> 
> Thanks for testing and confirming.  Expect 3.1.6 in the next couple
> of days.
> 

Hi Corinna,

I just wanted to follow up to confirm that upgrading to 3.1.6-1 fixes the 
problem for us.  Thanks for your help!

Josh
-- 
-------------------------------
Josh Thompson
Systems Programmer
Virtual Computing Lab (VCL)
North Carolina State University

Josh_Thompson@ncsu.edu
919-515-5323

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