[Tcl-bugs] [ tcl-Bugs-3545365 ] Crash in io-29.33b (no implicit flush of nonblocking on exit

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Bugs item #3545365, was opened at 2012-07-18 04:52
Message generated for change (Tracker Item Submitted) made by twylite
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Category: 24. Channel Commands
Group: development: 8.6b3
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Twylite (twylite)
Assigned to: Andreas Kupries (andreas_kupries)
Summary: Crash in io-29.33b (no implicit flush of nonblocking on exit

Initial Comment:
Hi,

io-29.33b crashes on a trunk build from 2012/07/18 using MSVC10, 32-bit tclsh running on Windows 7 64-bit.

Details:

Build setup (32-bit): 'Setting environment for using Microsoft Visual Studio 2010 x86 tools'
Testing platform: Windows 7 (64-bit), PROCESSOR_IDENTIFIER=Intel64 Family 6 Model 30 Stepping 5, GenuineIntel

C:\User\Tcl_BUILD\cmake-2012\tcl-trunk>fossil pull
Server:    http://core.tcl.tk/tcl

C:\User\Tcl_BUILD\cmake-2012\tcl-trunk>fossil update
updated-to:   f0f8f508748b68a589768e9e7df3beea28279df9 2012-07-17 13:08:18 UTC
tags:         trunk

Build commands:
  set BUILDENV=VC10
  set VER=86b3
  set INSTALLDIR=%CD%\Release_%VER%_%BUILDENV%
  set OPTS=threads
  set TCLSH=%INSTALLDIR%\bin\tclsh86t.exe
  mkdir %INSTALLDIR%
  pushd win
  nmake /f makefile.vc release tcltest OPTS=%OPTS% CFG_ENCODING=\\\"utf-8\\\" INSTALLDIR=%INSTALLDIR%
  nmake /f makefile.vc install OPTS=%OPTS% CFG_ENCODING=\\\"utf-8\\\" INSTALLDIR=%INSTALLDIR%
  nmake /f makefile.vc test

FAILURE #1: io-29.33b crashes (probably unrelated)
C:/User/Tcl_BUILD/cmake-2012/tcl-trunk/tests/io.test:2746: error: test failed: i
o-29.33b TIP#398, no implicit flush of nonblocking on exit
==== io-29.33b TIP#398, no implicit flush of nonblocking on exit FAILED
==== Contents of test case:

    set f [open $path(script) w]
    puts $f {
                fconfigure stdout -blocking 0
                puts -nonewline stdout [string repeat A 655360]
                flush stdout
        }
    close $f
    set f [open $path(script2) w]
    puts $f {after 2000}
    close $f
        set t1 [clock milliseconds]
        set ff [open "|[list [interpreter] $path(script2)]" w]
        catch {unset ::env(TCL_FLUSH_NONBLOCKING_ON_EXIT)}
        exec [interpreter] $path(script) >@ $ff
        set t2 [clock milliseconds]
        close $ff
        expr {($t2-$t1)/2000 ? $t2-$t1 : 0}

---- Test generated error; Return code was: 1
---- Return code should have been one of: 0 2
---- errorInfo: child killed: segmentation violation
    while executing
"exec [interpreter] $path(script) >@ $ff"
    ("uplevel" body line 15)
    invoked from within
"uplevel 1 $script"
---- errorCode: CHILDKILLED 9996 SIGSEGV {segmentation violation}
==== io-29.33b FAILED



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