[Issue 2518] New: scope(success) not execuate and RAII variable destructor is not called

December 17, 2008
Posted by d-bugmail
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http://d.puremagic.com/issues/show_bug.cgi?id=2518

           Summary: scope(success) not execuate and RAII variable destructor
                    is not called
           Product: D
           Version: 1.023
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: critical
          Priority: P2
         Component: DMD
        AssignedTo: bugzilla@digitalmars.com
        ReportedBy: redsea@163.com


error:
scope(success) is not execuated,
RAII variable destructor is not called, this bug is critical.

I wrote a phobos version test program, and found windows version of dmd is correct, but not linux version.

I test dmd 1.038. 1.037, 1.023, all is wrong.

the test program is as following:

import std.stdio;
alias writefln ot;

scope class Indent
{
    this()
    {
        ot("<<<");
    }
    ~this()
    {
        ot(">>>");
    }
}

void doScan(int a)
{
    ot("doScan {{{");

    scope(exit)
        {}
    scope(failure)
        ot("doScan failure }}}");
    scope(success)
        ot("doScan ok }}}");

    scope auto ident__doScan__ident = new Indent();
    if (a == 0 )
        return;
}


void main()
{
    for (int i=0; i<8;i++)
        doScan(0);
}


comment the following lines,  result would be ok:

    if (a == 0 )
        return;


the error output: (copy from linux dmd 1.038, running on debian lenny)
[tmp]root ./t
doScan {{{
<<<
doScan {{{
<<<
doScan {{{
<<<
doScan {{{
<<<
doScan {{{
<<<
doScan {{{
<<<
doScan {{{
<<<
doScan {{{
<<<

the correct output (copy from windows dmd 1.038)
C:\TEMP>t.exe
doScan {{{
<<<
>>>
doScan ok }}}
doScan {{{
<<<
>>>
doScan ok }}}
doScan {{{
<<<
>>>
doScan ok }}}
doScan {{{
<<<
>>>
doScan ok }}}
doScan {{{
<<<
>>>
doScan ok }}}
doScan {{{
<<<
>>>
doScan ok }}}
doScan {{{
<<<
>>>
doScan ok }}}
doScan {{{
<<<
>>>
doScan ok }}}



--------
detail enviorment infomation:

[tmp]root uname -a
Linux debian-dev-testing 2.6.25.20-pm-mon-02 #1 Sun Dec 7 17:57:03 CST 2008
i686 GNU/Linux

[tmp]root dmd -v
Digital Mars D Compiler v1.038
Copyright (c) 1999-2008 by Digital Mars written by Walter Bright
Documentation: http://www.digitalmars.com/d/1.0/index.html

[tmp]root dmd -v t.d
parse     t
semantic  t
import    object        (/root/dmd/bin/../src/phobos/object.d)
import    std.stdio     (/root/dmd/bin/../src/phobos/std/stdio.d)
import    std.c.stdio   (/root/dmd/bin/../src/phobos/std/c/stdio.d)
import    std.c.stddef  (/root/dmd/bin/../src/phobos/std/c/stddef.d)
import    std.c.stdarg  (/root/dmd/bin/../src/phobos/std/c/stdarg.d)
import    std.format    (/root/dmd/bin/../src/phobos/std/format.d)
import    std.stdarg    (/root/dmd/bin/../src/phobos/std/stdarg.d)
import    std.utf       (/root/dmd/bin/../src/phobos/std/utf.d)
import    std.c.stdlib  (/root/dmd/bin/../src/phobos/std/c/stdlib.d)
import    std.c.string  (/root/dmd/bin/../src/phobos/std/c/string.d)
import    std.string    (/root/dmd/bin/../src/phobos/std/string.d)
import    std.uni       (/root/dmd/bin/../src/phobos/std/uni.d)
import    std.array     (/root/dmd/bin/../src/phobos/std/array.d)
import    std.ctype     (/root/dmd/bin/../src/phobos/std/ctype.d)
import    std.gc        (/root/dmd/bin/../src/phobos/std/gc.d)
import    gcstats       (/root/dmd/bin/../src/phobos/gcstats.d)
import    std.c.linux.linux
(/root/dmd/bin/../src/phobos/std/c/linux/linux.d)
import    std.c.linux.linuxextern
(/root/dmd/bin/../src/phobos/std/c/linux/linuxextern.d)
import    std.c.linux.pthread
(/root/dmd/bin/../src/phobos/std/c/linux/pthread.d)
import    std.intrinsic (/root/dmd/bin/../src/phobos/std/intrinsic.d)
semantic2 t
semantic3 t
code      t
function  this
function  _dtor
function  doScan
function  main
gcc t.o -o t -m32 -Xlinker -L/root/dmd/bin/../lib -lphobos -lpthread -lm


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