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_thomp...@ncsu.edu 919-515-5323 my GPG/PGP key can be found on pool.sks-keyservers.net All electronic mail messages in connection with State business which are sent to or received by this account are subject to the NC Public Records Law and may be disclosed to third parties.
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