Re: initdb issue on 64-bit Windows - (Was: [pgsql-packagers] PG 9.6beta2 tarballs are ready)

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От Craig Ringer
Тема Re: initdb issue on 64-bit Windows - (Was: [pgsql-packagers] PG 9.6beta2 tarballs are ready)
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Msg-id CAMsr+YF4c7qXaEsobO_P1Z2okubZPZYaUHi=R-EZB0kUv5t1GQ@mail.gmail.com
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Ответ на Re: initdb issue on 64-bit Windows - (Was: [pgsql-packagers] PG 9.6beta2 tarballs are ready)  (Craig Ringer <craig@2ndquadrant.com>)
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On 24 June 2016 at 10:21, Craig Ringer <craig@2ndquadrant.com> wrote:
 
* To get a backtrace, I had to:

  * Launch a VS x86 command prompt
  * devenv /debugexe bin\initdb.exe -D test
  * Set a breakpoint in initdb.c:3557 and initdb.c:3307
  * Run
  * When it traps at get_restricted_token(), manually move the execution pointer over the setup of the restricted execution token by dragging & dropping the yellow instruction pointer arrow. Yes, really. Or, y'know, comment it out and rebuild, but I was working with a supplied binary.
  * Continue until next breakpoint
  * Launch process explorer and find the pid of the postgres child process
  * Debug->attach to process, attach to the child postgres. This doesn't detach the parent, VS does multiprocess debugging.
  * Continue execution
  * vs will trap on the child when it crashes


Also, to save anyone else this hassle, I have saved a process dump (windows core file) and the debug symbols to gdrive. You can get them at:

Note that you will need a Visual Studio version installed. VS Community 2015 works fine. You only need to install the C++ devenv and C++ headers, you don't need MFC or any of the rest. The default install is fine if you don't mind a bigger download.  Once installed, open postgres.dmp, then go to debug->options, symbols. There, enable the Microsoft Symbol Server, and also add a new entry for the absolute path to the symbols directory for the archive you unpacked. You should enable the symbol cache directory too, make a directory in your user dir and put it there.

If Haroon shared some gdrive links earlier on the thread I don't have access to, this is the same data just efficiently compressed (32MB instead of 180MB) and packaged up in a single convenient archive with the matching sources and a full working install. You'll need 7zip to unpack it, but that should be on your "install as soon as you install Windows" list anyway.



--
 Craig Ringer                   http://www.2ndQuadrant.com/
 PostgreSQL Development, 24x7 Support, Training & Services

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