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digitalmars.D.bugs - [Issue 4368] New: Fork() on OS X 2.047 results in a core.thread.ThreadException

reply d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=4368

           Summary: Fork() on OS X 2.047 results in a
                    core.thread.ThreadException
           Product: D
           Version: D2
          Platform: x86
        OS/Version: Mac OS X
            Status: NEW
          Severity: normal
          Priority: P2
         Component: druntime
        AssignedTo: sean invisibleduck.org
        ReportedBy: bheads emich.edu


--- Comment #0 from Byron Heads <bheads emich.edu> 2010-06-22 16:12:46 PDT ---
import  core.sys.posix.unistd,
        std.stdio;

void main() 
{
    auto pid = fork();

    if( pid > 0 ) {
        writeln( "Parent" );
    } else if( pid == 0 ) {
        writeln( "Child" );
    } else {
        writeln( "Failed to fork!" );
    }
}


$ ./fork
Parent
Child
core.thread.ThreadException: Unable to load thread state
----------------
5   fork                                0x00006e0d thread_suspendAll + 85
6   fork                                0x0000b014
D2gc3gcx3Gcx11fullcollectMFPvZk + 32
7   fork                                0x0000afe1
D2gc3gcx3Gcx16fullcollectshellMFZk + 41
8   fork                                0x0000a0c6
D2gc3gcx2GC18fullCollectNoStackMFZv + 54
9   fork                                0x00008060 gc_term + 44
10  fork                                0x0000cf1a
D2rt6dmain24mainUiPPaZi6runAllMFZv + 90
11  fork                                0x0000cdea
D2rt6dmain24mainUiPPaZi7tryExecMFMDFZvZv + 42
12  fork                                0x0000cd78 main + 168
13  fork                                0x00001acd start + 53halle109-82:dbug
admin$

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parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=4368


Heywood Floyd <soul8o8 gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |soul8o8 gmail.com


--- Comment #1 from Heywood Floyd <soul8o8 gmail.com> 2010-06-23 07:02:57 PDT
---
// Workaround (+ possible clue to what the cause is)


import  core.sys.posix.unistd,
      core.thread, //++++
        std.stdio;

void main() 
{
    auto pid = fork();

    if( pid > 0 ) {
        writeln( "Parent" );
    } else if( pid == 0 ) {
        thread_attachThis(); // ++++
        writeln( "Child" );
    } else {
        writeln( "Failed to fork!" );
    }
}:

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