Hello everyone,

---
FPC: 2.4.0 [2010/01/25] for i386
Lazarus: Lazarus fixes ( lazarus-0.9.28.3-27057-20100811) ---

I upgraded to Mandriva 2010.1, and now I have an error when I open some windows: "Access violation" in Lazarus (View->Units.../View->Forms... etc.)

In my application (Run time):
"TCustomForm.ShowModal impossible" and "Access violation".

The same program works fine in Windows.

Could it be a problem with the new libraries in Mandriva? Which?

Here some suspicious information:

/usr/bin/ld: warning: ../link.res contains output sections; did you forget -T? INPUT(
-lX11
-lgdk_pixbuf-2.0
-lgtk-x11-2.0
-lgdk-x11-2.0
-lgobject-2.0
-lglib-2.0
-lgthread-2.0
-lgmodule-2.0
-lpango-1.0
-lpthread
-latk-1.0
-lcairo
-ldl
)
GROUP(
-lc
)
INPUT(
/usr/lib/gcc/i586-manbo-linux-gnu/4.4.3/crtend.o
/usr/lib/crtn.o
)
ENTRY(_start)
SECTIONS
{

  PROVIDE (__executable_start = 0x010000); . = 0x010000 + SIZEOF_HEADERS;
  .interp         : { *(.interp) }
  .hash           : { *(.hash) }
  .dynsym         : { *(.dynsym) }
  .dynstr         : { *(.dynstr) }
  .gnu.version    : { *(.gnu.version) }
  .gnu.version_d  : { *(.gnu.version_d) }
  .gnu.version_r  : { *(.gnu.version_r) }
  .rel.dyn        :
    {
      *(.rel.init)
      *(.rel.text .rel.text.* .rel.gnu.linkonce.t.*)
      *(.rel.fini)
      *(.rel.rodata .rel.rodata.* .rel.gnu.linkonce.r.*)
      *(.rel.data.rel.ro*)
      *(.rel.data .rel.data.* .rel.gnu.linkonce.d.*)
      *(.rel.tdata .rel.tdata.* .rel.gnu.linkonce.td.*)
      *(.rel.tbss .rel.tbss.* .rel.gnu.linkonce.tb.*)
      *(.rel.got)
      *(.rel.bss .rel.bss.* .rel.gnu.linkonce.b.*)
    }
  .rela.dyn       :
    {
      *(.rela.init)
      *(.rela.text .rela.text.* .rela.gnu.linkonce.t.*)
      *(.rela.fini)
      *(.rela.rodata .rela.rodata.* .rela.gnu.linkonce.r.*)
      *(.rela.data .rela.data.* .rela.gnu.linkonce.d.*)
      *(.rela.tdata .rela.tdata.* .rela.gnu.linkonce.td.*)
      *(.rela.tbss .rela.tbss.* .rela.gnu.linkonce.tb.*)
      *(.rela.got)
      *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*)
    }
  .rel.plt        : { *(.rel.plt) }
  .rela.plt       : { *(.rela.plt) }
  .init           :
  {
    KEEP (*(.init))
  } =0x90909090
  .plt            : { *(.plt) }
  .text           :
  {
    *(.text .stub .text.* .gnu.linkonce.t.*)
    KEEP (*(.text.*personality*))
    *(.gnu.warning)
  } =0x90909090
  .fini           :
  {
    KEEP (*(.fini))
  } =0x90909090
  PROVIDE (_etext = .);
  .rodata         :
  {
    *(.rodata .rodata.* .gnu.linkonce.r.*)
  }
  . = ALIGN (0x1000) - ((0x1000 - .) & (0x1000 - 1));
  .dynamic        : { *(.dynamic) }
  .got            : { *(.got) }
  .got.plt        : { *(.got.plt) }
  .data           :
  {
    *(.data .data.* .gnu.linkonce.d.*)
    KEEP (*(.fpc .fpc.n_version .fpc.n_links))
    KEEP (*(.gnu.linkonce.d.*personality*))
  }
  PROVIDE (_edata = .);
  PROVIDE (edata = .);
  .threadvar : { *(.threadvar .threadvar.* .gnu.linkonce.tv.*) }
  __bss_start = .;
  .bss            :
  {
   *(.dynbss)
   *(.bss .bss.* .gnu.linkonce.b.*)
   *(COMMON)
   . = ALIGN(32 / 8);
  }
  . = ALIGN(32 / 8);
  PROVIDE (_end = .);
  PROVIDE (end = .);
  .stab          0 : { *(.stab) }
  .stabstr       0 : { *(.stabstr) }

}

Just a thought, aren't you meant to derive from TCustomForm rather than use direct?

TForm = class(TCustomForm)
TMyForm = class(TCustomForm)

So that you always use myTForm.ShowModal or myTMyForm.ShowModal ? Unless you're doping anything particularly unusual I wouldv'e thought TForm would've done the job anyways...

- V

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What's common in the windows:

View ->Units....
View ->Forms....
Project ->Project Options
Project ->Compiler Options

I have a nice "Access violation".
Does anyone else here with Mandriva 2010.1?

2010/8/10 Luis R. Hilario B. :

I have more information about the problem:

I eliminated a TListBox component of my program and the error "TCustomForm.ShowModal impossible" disappeared.

I tried to put the component again, but I get the following error: TControlSelection.AssignPersistent Form7:TForm7
AddComponent TListBox Parent=Form7:TForm7 137,332,0,0 Parent is 'Form7:TForm7'
Access violation
Stack trace:
$B7440DBE
...

And a window that says:
"Error moving component ListBox1:TListBox"

I found something in the Gnome bugzilla:
https://bugzilla.gnome.org/show_bug.cgi?id=608439

libgtk-x11-2.0.so.0.1800.3 (Mandriva 2010.0) Good
libgtk-x11-2.0.so.0.2000.1 (Mandriva 2010.1) Bad

2010/8/12 Luis R. Hilario B. :

I have more information about the problem: I eliminated a TListBox component of my program and the error "TCustomForm.ShowModal impossible" disappeared.

Have you tried with the svn version?

Mattias

I was using "Lazarus fixes" and not the latest version.

Solved, thanks.

2010/8/17 Mattias Gaertner :