Re: [Boost-bugs] [Boost C++ Libraries] #13433: b2 emits strange error message when building 1.66.0 on windows 10 against very new visual studio

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #13433: b2 emits strange error message when building 1.66.0 on windows 10 against very new visual studio
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2018-02-02 18:30:57

#13433: b2 emits strange error message when building 1.66.0 on windows 10 against
very new visual studio
-------------------------------+---------------------------
  Reporter:  ivandavid14@…     |      Owner:  Vladimir Prus
      Type:  Bugs              |     Status:  new
 Milestone:  To Be Determined  |  Component:  build
   Version:  Boost 1.66.0      |   Severity:  Problem
Resolution:                    |   Keywords:  b2 bjam
-------------------------------+---------------------------

Comment (by ivandavid14@…):

 Hello, after modified the execnt.c a bit more

 err_printf("failed to write command file!\n %u\n %s\n",GetLastError(),
 cmdtab[ slot ].command_file->value);

 The result of the GetLastError() was 32 which is ERROR_SHARING_VIOLATION,
 which has the description "The process cannot access the file because it
 is being used by another process."

 I found that antimalware software (such as windows defender) can cause
 fopen to do fail. I observed that small cpp files are usually what cause
 the problem (like a lot of the math ones). My assumption is that they
 compile very quickly so the time between create a bat file, running it,
 then going on to the next one is very small. This creates a lot of bat
 files in a short amount of time, potentially triggering the antimalware
 software to lock the file or something like that.

 I modified my command line by removing '-a' from the b2 call and I wrote a
 script to just keep trying to build boost and just continue from where it
 left off. Sorry for the rather unsatisfactory answer and I hope I didn't
 waste your guys time.

-- 
Ticket URL: <https://svn.boost.org/trac10/ticket/13433#comment:3>
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