Ruby

Bug #1162

Updated by jeremyevans0 (Jeremy Evans) over 5 years ago

=begin 
  
  Build ruby 1.9.1 with VC 2008 using the following flags: 
 
  RUNTIMEFLAG = -MDd 
  OPTFLAGS = -Od -RTC1 
  LDFLAGS = -link -INCREMENTAL:NO -DEBUG -OPT:REF -OPT:ICF 
 
  Failure occurs when running miniruby.exe for the first time: 
 
  File: f:\dd\vctools\crt_bld\self_x86\src\commit.c, line 69. 
  Expression: ("Invalid file descriptor.    File possibly closed by a different thread", 0) 
 
  The call sequence: 
 
  rb_io_flush -> fsync -> _commit -> FlushFileBuffers 
 
  The stream is stdout or stderr. 
 
  From Microsoft's documentation of FlushFileBuffers (http://msdn.microsoft.com/en-us/library/aa364439(VS.85).aspx): 
 
  The function fails if hFile is a handle to the console output. That is because the console output is not buffered. The function returns FALSE, and GetLastError returns ERROR_INVALID_HANDLE. 
 
  Thus calling _commit on STDOUT or STDERR is invalid.  
 
  This patch fixes the problem: 
 
  --- io.old.c 	 2009-02-14 14:27:15 -0700 
  +++ io.c 	 2009-02-14 14:27:20 -0700 
  @@ -1002,7 +1002,8 @@ 
           if (io_fflush(fptr) < 0) 
               rb_sys_fail(0); 
   #ifdef _WIN32 
  - 	   fsync(fptr->fd); 
  +      if (io != rb_stdout && io != rb_stderr) 
  + 	     fsync(fptr->fd); 
   #endif 
       } 
       if (fptr->mode & FMODE_READABLE) { 
 
 =end 
 

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