> On 24 Jul 2018, at 22:57, Daniel Gustafsson <dan...@yesql.se> wrote:
> 
>> On 6 Jul 2018, at 02:18, Thomas Munro <thomas.mu...@enterprisedb.com> wrote:
>> 
>> On Fri, Jun 15, 2018 at 9:56 AM, Daniel Gustafsson <dan...@yesql.se> wrote:
>>> attached
>> 
>> Hi Daniel,
>> 
>> 6118  --select pg_cancel_backend(pg_backend_pid(), 'it brings on many 
>> changes');
>> 6119  select pg_cancel_backend(pg_backend_pid(), NULL);
>> 6120! ERROR:  canceling statement due to user request
>> 6121--- 25,32 ----
>> 6122
>> 6123  --select pg_cancel_backend(pg_backend_pid(), 'it brings on many 
>> changes');
>> 6124  select pg_cancel_backend(pg_backend_pid(), NULL);
>> 6125!  pg_cancel_backend
>> 6126! -------------------
>> 6127!  t
>> 
>> Apparently Windows can take or leave it as it pleases.
> 
> Well played =)
> 
>> https://ci.appveyor.com/project/postgresql-cfbot/postgresql/build/1.0.4488
> 
> That reads to me like it’s cancelling another backend than the current one,
> which clearly isn’t right as we’re passing pg_backend_pid().  I can’t really
> see what Windows specific bug was introduced by this patch though (or well, 
> the
> bug exhibits itself on Windows but it may well be generic of course).
> 
> Will continue to hunt.

Seems the build of the updated patch built and tested Ok.  Still have no idea
why the previous one didn’t.

https://ci.appveyor.com/project/postgresql-cfbot/postgresql/build/1.0.6695

cheers ./daniel

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