Re: [Interest] ASAN (Qt 6.4 + Glib) build shows stackoverflow in trivial Qt program

2022-11-17 Thread Dennis Luehring 

Am 13.11.2022 um 18:03 schrieb Henry Skoglund:

I can confirm "several tiny libraries" i.e. I had the same problem when
building Qt on Ubuntu 22.04.
After fiddling for a while, I took the easy way out:
sudo apt-get install libxcb*

That installed 68 libs (all beginning with libxcb-) probably overkill
but at least it solved the problem :-)
/Henry


install all the libxcb* - will sort out the correct dependency later

works - thanks
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Re: [Interest] ASAN (Qt 6.4 + Glib) build shows stackoverflow in trivial Qt program

2022-11-16 Thread Thiago Macieira 
On Wednesday, 16 November 2022 05:52:35 PST Dennis Luehring wrote:
> > Fixed in https://codereview.qt-project.org/c/qt/qtbase/+/442720
> 
> your fix was rejected for 6.4.1

It's not "rejected". I never requested it be included in 6.4.1 branch because 
it's not release-critical. It'll be in 6.4.2.

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Re: [Interest] ASAN (Qt 6.4 + Glib) build shows stackoverflow in trivial Qt program

2022-11-16 Thread Dennis Luehring 

Am 10.11.2022 um 20:40 schrieb Thiago Macieira:

On Thursday, 10 November 2022 00:23:52 PST Dennis Luehring wrote:
>  #1 0x7f08b15289a1 in g_object_get_valist ../glib/gobject/gobject.c:2659
>  #2 0x7f08b1529029 in g_object_get ../glib/gobject/gobject.c:2754
>  #3 0x7f08b3eee24b in gtkSetting

template 
static T gtkSetting(const gchar *propertyName)
{
 GtkSettings *settings = gtk_settings_get_default();
 T value;
 g_object_get(settings, propertyName, , NULL);
 return value;
}

The GLib line is:

   G_VALUE_LCOPY (, var_args, 0, );

Which uses this macro:
https://gitlab.gnome.org/GNOME/glib/-/blob/2.72.1/gobject/
gvaluecollector.h#L213-252

There's no support in it for boolean (1-byte) properties. The problem is that
f*&*!)ing Glib is written in C and refuses to use bool. They have:

typedef intgint;
typedef gint   gboolean;

So their boolean is a 4-byte type.

Fixed in https://codereview.qt-project.org/c/qt/qtbase/+/442720



your fix was rejected for 6.4.1
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Re: [Interest] ASAN (Qt 6.4 + Glib) build shows stackoverflow in trivial Qt program

2022-11-14 Thread Dennis Luehring 

Am 13.11.2022 um 18:03 schrieb Henry Skoglund:

On 2022-11-13 17:52, Thiago Macieira wrote:
> On Saturday, 12 November 2022 23:11:45 PST Dennis Luehring wrote:
>> forcing -xcb gives me these configure output (https://pastebin.com/ML8QCJRQ)
>>
>> XCB:
>>   Using system-provided xcb-xinput . no
>>   GL integrations:
>> GLX Plugin . yes
>>   XCB GLX .. yes
>> EGL-X11 Plugin . yes
>>
>> but also configure fails with
>>
>> ERROR: Feature "xcb": Forcing to "ON" breaks its condition:
>>   QT_FEATURE_thread AND TARGET XCB::XCB AND TEST_xcb_syslibs AND
>> QT_FEATURE_xkbcommon_x11
>>
>>
>> i've double checked every required package that is needed and can't find
>> a missing package
> Your log says:
>
>>TEST_xcb_syslibs = "FALSE"
> This is the problem. You're missing the XCB libraries in your environment (we
> don't ship them bundled in Qt any more). You may want to increase the log
> level because XCB support requires several tiny libraries and any of them
> missing means the entire support is missing.
>

I can confirm "several tiny libraries" i.e. I had the same problem when
building Qt on Ubuntu 22.04.
After fiddling for a while, I took the easy way out:
sudo apt-get install libxcb*



i've already got the with X in front - there are still many to go :) -
any slightest hint?

X libxcb-dri2-0/jammy,now 1.14-3ubuntu3 amd64 [installed,automatic]
X libxcb-dri3-0/jammy,now 1.14-3ubuntu3 amd64 [installed,automatic]
X libxcb-glx0-dev/jammy,now 1.14-3ubuntu3 amd64 [installed]
X libxcb-glx0/jammy,now 1.14-3ubuntu3 amd64 [installed,automatic]
X libxcb-icccm4-dev/jammy,now 0.4.1-1.1build2 amd64 [installed]
X libxcb-icccm4/jammy,now 0.4.1-1.1build2 amd64 [installed,automatic]
X libxcb-image0-dev/jammy,now 0.4.0-2 amd64 [installed]
X libxcb-image0/jammy,now 0.4.0-2 amd64 [installed]
X libxcb-keysyms1-dev/jammy,now 0.4.0-1build3 amd64 [installed]
X libxcb-keysyms1/jammy,now 0.4.0-1build3 amd64 [installed,automatic]
X libxcb-present0/jammy,now 1.14-3ubuntu3 amd64 [installed,automatic]
X libxcb-randr0-dev/jammy,now 1.14-3ubuntu3 amd64 [installed]
X libxcb-randr0/jammy,now 1.14-3ubuntu3 amd64 [installed]
X libxcb-render-util0-dev/jammy,now 0.3.9-1build3 amd64 [installed]
X libxcb-render-util0/jammy,now 0.3.9-1build3 amd64 [installed,automatic]
X libxcb-render0-dev/jammy,now 1.14-3ubuntu3 amd64 [installed]
X libxcb-render0/jammy,now 1.14-3ubuntu3 amd64 [installed,automatic]
X libxcb-res0/jammy,now 1.14-3ubuntu3 amd64 [installed,automatic]
X libxcb-shape0-dev/jammy,now 1.14-3ubuntu3 amd64 [installed]
X libxcb-shape0/jammy,now 1.14-3ubuntu3 amd64 [installed,automatic]
X libxcb-shm0-dev/jammy,now 1.14-3ubuntu3 amd64 [installed]
X libxcb-shm0/jammy,now 1.14-3ubuntu3 amd64 [installed,automatic]
X libxcb-sync-dev/jammy,now 1.14-3ubuntu3 amd64 [installed]
X libxcb-sync1/jammy,now 1.14-3ubuntu3 amd64 [installed,automatic]
X libxcb-util-dev/jammy,now 0.4.0-1build2 amd64 [installed]
X libxcb-util1/jammy,now 0.4.0-1build2 amd64 [installed]
X libxcb-xfixes0-dev/jammy,now 1.14-3ubuntu3 amd64 [installed]
X libxcb-xfixes0/jammy,now 1.14-3ubuntu3 amd64 [installed,automatic]
X libxcb-xinerama0-dev/jammy,now 1.14-3ubuntu3 amd64 [installed]
X libxcb-xinerama0/jammy,now 1.14-3ubuntu3 amd64 [installed,automatic]
X libxcb-xinput-dev/jammy,now 1.14-3ubuntu3 amd64 [installed]
X libxcb-xinput0/jammy,now 1.14-3ubuntu3 amd64 [installed,automatic]
X libxcb-xkb-dev/jammy,now 1.14-3ubuntu3 amd64 [installed]
X libxcb-xkb1/jammy,now 1.14-3ubuntu3 amd64 [installed,automatic]
X libxcb-xv0/jammy,now 1.14-3ubuntu3 amd64 [installed,automatic]
X libxcb1-dev/jammy,now 1.14-3ubuntu3 amd64 [installed]
X libxcb1/jammy,now 1.14-3ubuntu3 amd64 [installed]
libxcb-composite0-dev/jammy 1.14-3ubuntu3 amd64
libxcb-composite0/jammy 1.14-3ubuntu3 amd64
libxcb-cursor-dev/jammy 0.1.1-4ubuntu1 amd64
libxcb-cursor0/jammy 0.1.1-4ubuntu1 amd64
libxcb-damage0-dev/jammy 1.14-3ubuntu3 amd64
libxcb-damage0/jammy 1.14-3ubuntu3 amd64
libxcb-doc/jammy,jammy 1.14-3ubuntu3 all
libxcb-dpms0-dev/jammy 1.14-3ubuntu3 amd64
libxcb-dpms0/jammy 1.14-3ubuntu3 amd64
libxcb-dri2-0-dev/jammy 1.14-3ubuntu3 amd64
libxcb-dri3-dev/jammy 1.14-3ubuntu3 amd64
libxcb-ewmh-dev/jammy 0.4.1-1.1build2 amd64
libxcb-ewmh2/jammy 0.4.1-1.1build2 amd64
libxcb-imdkit-dev/jammy 1.0.3-1 amd64
libxcb-imdkit1/jammy 1.0.3-1 amd64
libxcb-present-dev/jammy 1.14-3ubuntu3 amd64
libxcb-record0-dev/jammy 1.14-3ubuntu3 amd64
libxcb-record0/jammy 1.14-3ubuntu3 amd64
libxcb-res0-dev/jammy 1.14-3ubuntu3 amd64
libxcb-screensaver0-dev/jammy 1.14-3ubuntu3 amd64
libxcb-screensaver0/jammy 1.14-3ubuntu3 amd64
libxcb-util0-dev/jammy 0.4.0-1build2 amd64
libxcb-xf86dri0-dev/jammy 1.14-3ubuntu3 amd64
libxcb-xf86dri0/jammy 1.14-3ubuntu3 amd64
libxcb-xrm-dev/jammy 1.0-3 amd64
libxcb-xrm0/jammy 1.0-3 amd64
libxcb-xtest0-dev/jammy 1.14-3ubuntu3 amd64
libxcb-xtest0/jammy 1.14-3ubuntu3 amd64
libxcb-xv0-dev/jammy 1.14-3ubuntu3 amd64

Re: [Interest] ASAN (Qt 6.4 + Glib) build shows stackoverflow in trivial Qt program

2022-11-13 Thread Thiago Macieira 
On Sunday, 13 November 2022 09:51:54 PST Henry Skoglund wrote:
> not only are those libcxb files cluttering up my RAM they're also
> creating litter on my SSD :-(

You chose that when you chose to use Snap or AppImage or Flatpak applications.

-- 
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  Cloud Software Architect - Intel DCAI Cloud Engineering



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Re: [Interest] ASAN (Qt 6.4 + Glib) build shows stackoverflow in trivial Qt program

2022-11-13 Thread Henry Skoglund 

On 2022-11-13 18:29, Thiago Macieira wrote:

On Sunday, 13 November 2022 09:03:40 PST Henry Skoglund wrote:

I can confirm "several tiny libraries" i.e. I had the same problem when
building Qt on Ubuntu 22.04.
After fiddling for a while, I took the easy way out:
sudo apt-get install libxcb*

That installed 68 libs (all beginning with libxcb-) probably overkill
but at least it solved the problem :-)

Those XCB libraries are generated from the X specification, that's why there
are so many of them. But this split up is counter-productive now.

As you've seen, it causes headache in forgetting just one of them. And as we
add content to Qt, what built one version may not build the next, so you have
to review after the upgrade.

The next problem is memory fragmentation. At a bare minimum, each library on
Linux must be one read-only page containing code and one read-write page
containing the GOT. Most Linux distros actually split a bit more for security,
with a read-only non-executable page before the executable one, then one more
after for read-only constant data and yet another for post-relocation read-
only, like so:

Address   Kbytes RSS PSS   DirtySwap Mode  Mapping
7fed1e9e6000   4   4   0   0   0 r--p- libxcb-shm.so.
0.0.0
7fed1e9e7000   4   4   0   0   0 r-xp-libxcb-shm.so.
0.0.0
7fed1e9e8000   4   4   0   0   0 r--p- libxcb-shm.so.
0.0.0
7fed1e9e9000   4   4   4   4   0 r--p- libxcb-shm.so.
0.0.0
7fed1e9ea000   4   4   4   4   0 rw-p-libxcb-shm.so.
0.0.0

And the last two pages are not sharable between processes, so each one of
those costs 5 VMA entries in the page tables, 8 kB of non-sharable data, and a
bit of load-time work processing relocations.

All this for this tiny XCB library:
-rwxr-xr-x 1 root root 14416 Aug 31 05:33 /lib64/libxcb-shm.so.0.0.0


For Clear Linux, we've "tricked" the build to just merge all those libraries
and libX11.so into a single .so, so they are loaded once only and occupy Much
less memory.


Yeah maybe Ubuntu is not the cream of the crop anymore:
find / -name libxcb-shm.so.0.0.0
/usr/lib/x86_64-linux-gnu/libxcb-shm.so.0.0.0
/snap/snap-store/582/usr/lib/x86_64-linux-gnu/libxcb-shm.so.0.0.0
/snap/snap-store/599/usr/lib/x86_64-linux-gnu/libxcb-shm.so.0.0.0
/snap/gnome-3-38-2004/119/usr/lib/x86_64-linux-gnu/libxcb-shm.so.0.0.0
/snap/gnome-3-38-2004/115/usr/lib/x86_64-linux-gnu/libxcb-shm.so.0.0.0

not only are those libcxb files cluttering up my RAM they're also 
creating litter on my SSD :-(


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Re: [Interest] ASAN (Qt 6.4 + Glib) build shows stackoverflow in trivial Qt program

2022-11-13 Thread Thiago Macieira 
On Sunday, 13 November 2022 09:03:40 PST Henry Skoglund wrote:
> I can confirm "several tiny libraries" i.e. I had the same problem when
> building Qt on Ubuntu 22.04.
> After fiddling for a while, I took the easy way out:
> sudo apt-get install libxcb*
> 
> That installed 68 libs (all beginning with libxcb-) probably overkill
> but at least it solved the problem :-)

Those XCB libraries are generated from the X specification, that's why there 
are so many of them. But this split up is counter-productive now.

As you've seen, it causes headache in forgetting just one of them. And as we 
add content to Qt, what built one version may not build the next, so you have 
to review after the upgrade.

The next problem is memory fragmentation. At a bare minimum, each library on 
Linux must be one read-only page containing code and one read-write page 
containing the GOT. Most Linux distros actually split a bit more for security, 
with a read-only non-executable page before the executable one, then one more 
after for read-only constant data and yet another for post-relocation read-
only, like so:

Address   Kbytes RSS PSS   DirtySwap Mode  Mapping
7fed1e9e6000   4   4   0   0   0 r--p- libxcb-shm.so.
0.0.0
7fed1e9e7000   4   4   0   0   0 r-xp-libxcb-shm.so.
0.0.0
7fed1e9e8000   4   4   0   0   0 r--p- libxcb-shm.so.
0.0.0
7fed1e9e9000   4   4   4   4   0 r--p- libxcb-shm.so.
0.0.0
7fed1e9ea000   4   4   4   4   0 rw-p-libxcb-shm.so.
0.0.0

And the last two pages are not sharable between processes, so each one of 
those costs 5 VMA entries in the page tables, 8 kB of non-sharable data, and a 
bit of load-time work processing relocations.

All this for this tiny XCB library:
-rwxr-xr-x 1 root root 14416 Aug 31 05:33 /lib64/libxcb-shm.so.0.0.0


For Clear Linux, we've "tricked" the build to just merge all those libraries 
and libX11.so into a single .so, so they are loaded once only and occupy Much 
less memory.

-- 
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  Cloud Software Architect - Intel DCAI Cloud Engineering



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Re: [Interest] ASAN (Qt 6.4 + Glib) build shows stackoverflow in trivial Qt program

2022-11-13 Thread Henry Skoglund 

On 2022-11-13 17:52, Thiago Macieira wrote:

On Saturday, 12 November 2022 23:11:45 PST Dennis Luehring wrote:

forcing -xcb gives me these configure output (https://pastebin.com/ML8QCJRQ)

XCB:
  Using system-provided xcb-xinput . no
  GL integrations:
GLX Plugin . yes
  XCB GLX .. yes
EGL-X11 Plugin . yes

but also configure fails with

ERROR: Feature "xcb": Forcing to "ON" breaks its condition:
  QT_FEATURE_thread AND TARGET XCB::XCB AND TEST_xcb_syslibs AND
QT_FEATURE_xkbcommon_x11


i've double checked every required package that is needed and can't find
a missing package

Your log says:


   TEST_xcb_syslibs = "FALSE"

This is the problem. You're missing the XCB libraries in your environment (we
don't ship them bundled in Qt any more). You may want to increase the log
level because XCB support requires several tiny libraries and any of them
missing means the entire support is missing.



I can confirm "several tiny libraries" i.e. I had the same problem when 
building Qt on Ubuntu 22.04.

After fiddling for a while, I took the easy way out:
sudo apt-get install libxcb*

That installed 68 libs (all beginning with libxcb-) probably overkill 
but at least it solved the problem :-)

/Henry

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Re: [Interest] ASAN (Qt 6.4 + Glib) build shows stackoverflow in trivial Qt program

2022-11-13 Thread Thiago Macieira 
On Saturday, 12 November 2022 23:11:45 PST Dennis Luehring wrote:
> forcing -xcb gives me these configure output (https://pastebin.com/ML8QCJRQ)
> 
>XCB:
>  Using system-provided xcb-xinput . no
>  GL integrations:
>GLX Plugin . yes
>  XCB GLX .. yes
>EGL-X11 Plugin . yes
> 
> but also configure fails with
> 
> ERROR: Feature "xcb": Forcing to "ON" breaks its condition:
>  QT_FEATURE_thread AND TARGET XCB::XCB AND TEST_xcb_syslibs AND
> QT_FEATURE_xkbcommon_x11
> 
> 
> i've double checked every required package that is needed and can't find
> a missing package

Your log says:

>   TEST_xcb_syslibs = "FALSE"

This is the problem. You're missing the XCB libraries in your environment (we 
don't ship them bundled in Qt any more). You may want to increase the log 
level because XCB support requires several tiny libraries and any of them 
missing means the entire support is missing.

-- 
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  Cloud Software Architect - Intel DCAI Cloud Engineering



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Re: [Interest] ASAN (Qt 6.4 + Glib) build shows stackoverflow in trivial Qt program

2022-11-12 Thread Dennis Luehring 

Am 12.11.2022 um 20:45 schrieb Elvis Stansvik:

And just to chime in, you would do that by running with
QT_QPA_PLATFORM=offscreen.

Elvis


thanks
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Re: [Interest] ASAN (Qt 6.4 + Glib) build shows stackoverflow in trivial Qt program

2022-11-12 Thread Dennis Luehring 

Am 12.11.2022 um 18:07 schrieb Thiago Macieira:

On Friday, 11 November 2022 23:54:24 PST Dennis Luehring wrote:
>../qt6/qtbase/configure -debug -opensource [...]
># ==> https://pastebin.com/JDm0p80b  qt6_configure.txt

You've only built qtbase. That means you have no Wayland client plugin.


ok, Wayland isn't needed now - so its ok, but a window would be nice :)



The configure output is confusing. It says "yes" for a bunch of X11 things, but
the "XCB" section only has "no":
>   XCB:
> Using system-provided xcb-xinput . no
> GL integrations:
>   GLX Plugin . no
> XCB GLX .. no
>   EGL-X11 Plugin . no

Though none of them are about XCB itself, one would conclude it is enabled.
The hint here that GLX wasn't enabled.


i don't know how - is there something to force glx
so im getting an configure error for missing dependencies?

forcing -xcb gives me these configure output (https://pastebin.com/ML8QCJRQ)

  XCB:
    Using system-provided xcb-xinput . no
    GL integrations:
  GLX Plugin . yes
    XCB GLX .. yes
  EGL-X11 Plugin . yes

but also configure fails with

ERROR: Feature "xcb": Forcing to "ON" breaks its condition:
    QT_FEATURE_thread AND TARGET XCB::XCB AND TEST_xcb_syslibs AND
QT_FEATURE_xkbcommon_x11


i've double checked every required package that is needed and can't find
a missing package


installed glx packages:

linux@linux-virtual-machine:~$ apt list --installed | grep glx

WARNING: apt does not have a stable CLI interface. Use with caution in
scripts.

libgl1-mesa-glx/jammy-updates,now 22.0.5-0ubuntu0.1 amd64 [installed]
libglx-dev/jammy,now 1.4.0-1 amd64 [installed]
libglx-mesa0/jammy-updates,now 22.0.5-0ubuntu0.1 amd64 [installed]
libglx0/jammy,now 1.4.0-1 amd64 [installed]
libxcb-glx0-dev/jammy,now 1.14-3ubuntu3 amd64 [installed]
libxcb-glx0/jammy,now 1.14-3ubuntu3 amd64 [installed,automatic]


also glxgears is working


installed mesa packages:

linux@linux-virtual-machine:~$ apt list --installed | grep mesa

WARNING: apt does not have a stable CLI interface. Use with caution in
scripts.

libegl-mesa0/jammy-updates,now 22.0.5-0ubuntu0.1 amd64 [installed,automatic]
libegl1-mesa-dev/jammy-updates,now 22.0.5-0ubuntu0.1 amd64
[installed,automatic]
libgl1-mesa-dev/jammy-updates,now 22.0.5-0ubuntu0.1 amd64 [installed]
libgl1-mesa-dri/jammy-updates,now 22.0.5-0ubuntu0.1 amd64 [installed]
libgl1-mesa-glx/jammy-updates,now 22.0.5-0ubuntu0.1 amd64 [installed]
libglapi-mesa/jammy-updates,now 22.0.5-0ubuntu0.1 amd64
[installed,automatic]
libglu1-mesa-dev/jammy,now 9.0.2-1 amd64 [installed]
libglu1-mesa/jammy,now 9.0.2-1 amd64 [installed,automatic]
libglx-mesa0/jammy-updates,now 22.0.5-0ubuntu0.1 amd64 [installed]
mesa-common-dev/jammy-updates,now 22.0.5-0ubuntu0.1 amd64 [installed]
mesa-utils-bin/jammy,now 8.4.0-1ubuntu1 amd64 [installed,automatic]
mesa-utils/jammy,now 8.4.0-1ubuntu1 amd64 [installed]
mesa-vulkan-drivers/jammy-updates,now 22.0.5-0ubuntu0.1 amd64
[installed,automatic]

installed xcb packages:

linux@linux-virtual-machine:~$ apt list --installed | grep xcb

WARNING: apt does not have a stable CLI interface. Use with caution in
scripts.

libx11-xcb-dev/jammy,now 2:1.7.5-1 amd64 [installed]
libx11-xcb1/jammy,now 2:1.7.5-1 amd64 [installed,automatic]
libxcb-dri2-0/jammy,now 1.14-3ubuntu3 amd64 [installed,automatic]
libxcb-dri3-0/jammy,now 1.14-3ubuntu3 amd64 [installed,automatic]
libxcb-glx0-dev/jammy,now 1.14-3ubuntu3 amd64 [installed]
libxcb-glx0/jammy,now 1.14-3ubuntu3 amd64 [installed,automatic]
libxcb-icccm4-dev/jammy,now 0.4.1-1.1build2 amd64 [installed]
libxcb-icccm4/jammy,now 0.4.1-1.1build2 amd64 [installed,automatic]
libxcb-image0-dev/jammy,now 0.4.0-2 amd64 [installed]
libxcb-image0/jammy,now 0.4.0-2 amd64 [installed]
libxcb-keysyms1-dev/jammy,now 0.4.0-1build3 amd64 [installed]
libxcb-keysyms1/jammy,now 0.4.0-1build3 amd64 [installed,automatic]
libxcb-present0/jammy,now 1.14-3ubuntu3 amd64 [installed,automatic]
libxcb-randr0-dev/jammy,now 1.14-3ubuntu3 amd64 [installed]
libxcb-randr0/jammy,now 1.14-3ubuntu3 amd64 [installed]
libxcb-render-util0-dev/jammy,now 0.3.9-1build3 amd64 [installed]
libxcb-render-util0/jammy,now 0.3.9-1build3 amd64 [installed,automatic]
libxcb-render0-dev/jammy,now 1.14-3ubuntu3 amd64 [installed]
libxcb-render0/jammy,now 1.14-3ubuntu3 amd64 [installed,automatic]
libxcb-res0/jammy,now 1.14-3ubuntu3 amd64 [installed,automatic]
libxcb-shape0-dev/jammy,now 1.14-3ubuntu3 amd64 [installed]
libxcb-shape0/jammy,now 1.14-3ubuntu3 amd64 [installed,automatic]
libxcb-shm0-dev/jammy,now 1.14-3ubuntu3 amd64 [installed]
libxcb-shm0/jammy,now 1.14-3ubuntu3 amd64 [installed,automatic]
libxcb-sync-dev/jammy,now 1.14-3ubuntu3 amd64 [installed]
libxcb-sync1/jammy,now 1.14-3ubuntu3 amd64 [installed,automatic]
libxcb-util-dev/jammy,now 0.4.0-1build2 amd64 [installed]

Re: [Interest] ASAN (Qt 6.4 + Glib) build shows stackoverflow in trivial Qt program

2022-11-12 Thread Elvis Stansvik 
Den lör 12 nov. 2022 kl 18:08 skrev Thiago Macieira :
>
> On Friday, 11 November 2022 23:54:24 PST Dennis Luehring wrote:
> >../qt6/qtbase/configure -debug -opensource [...]
> ># ==> https://pastebin.com/JDm0p80b  qt6_configure.txt
>
> You've only built qtbase. That means you have no Wayland client plugin.
>
> The configure output is confusing. It says "yes" for a bunch of X11 things, 
> but
> the "XCB" section only has "no":
> >   XCB:
> > Using system-provided xcb-xinput . no
> > GL integrations:
> >   GLX Plugin . no
> > XCB GLX .. no
> >   EGL-X11 Plugin . no
>
> Though none of them are about XCB itself, one would conclude it is enabled.
> The hint here that GLX wasn't enabled.
>
> In any case, the XCB plugin didn't get built:
>
> > linux@linux-virtual-machine:~/qt6_dev/qt6-build/plugins/platforms$ ls
> > libqeglfs.so  libqlinuxfb.so  libqminimalegl.so  libqminimal.so
> > libqoffscreen.so  libqvkkhrdisplay.so  libqvnc.so
>
> So this build has no XCB or Wayland, that's why you can't start applications.
> If you just want to test an application that starts and ends, you can use the
> offscreen one.

And just to chime in, you would do that by running with
QT_QPA_PLATFORM=offscreen.

Elvis

>
>
> --
> Thiago Macieira - thiago.macieira (AT) intel.com
>   Cloud Software Architect - Intel DCAI Cloud Engineering
>
>
>
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Re: [Interest] ASAN (Qt 6.4 + Glib) build shows stackoverflow in trivial Qt program

2022-11-12 Thread Thiago Macieira 
On Friday, 11 November 2022 23:54:24 PST Dennis Luehring wrote:
>../qt6/qtbase/configure -debug -opensource [...]
># ==> https://pastebin.com/JDm0p80b  qt6_configure.txt

You've only built qtbase. That means you have no Wayland client plugin.

The configure output is confusing. It says "yes" for a bunch of X11 things, but 
the "XCB" section only has "no":
>   XCB:
> Using system-provided xcb-xinput . no
> GL integrations:
>   GLX Plugin . no
> XCB GLX .. no
>   EGL-X11 Plugin . no

Though none of them are about XCB itself, one would conclude it is enabled. 
The hint here that GLX wasn't enabled.

In any case, the XCB plugin didn't get built:

> linux@linux-virtual-machine:~/qt6_dev/qt6-build/plugins/platforms$ ls
> libqeglfs.so  libqlinuxfb.so  libqminimalegl.so  libqminimal.so
> libqoffscreen.so  libqvkkhrdisplay.so  libqvnc.so

So this build has no XCB or Wayland, that's why you can't start applications. 
If you just want to test an application that starts and ends, you can use the 
offscreen one.
 

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Thiago Macieira - thiago.macieira (AT) intel.com
  Cloud Software Architect - Intel DCAI Cloud Engineering



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Re: [Interest] ASAN (Qt 6.4 + Glib) build shows stackoverflow in trivial Qt program

2022-11-11 Thread Dennis Luehring 

Am 11.11.2022 um 18:01 schrieb Thiago Macieira:

On Thursday, 10 November 2022 23:50:50 PST Dennis Luehring wrote:
> give a wayland plugin not found message and then hangs forever :/

Run with QT_DEBUG_PLUGINS=1 and see why the plugin won't load.



i switched to git/dev - because i will switch to 6.5 in the future when
in comes available and i think its easier to follow your advices

and i also did a clean Ubuntu 22.04 Setup + Qt-Installer install + Qt
git/dev build using these steps

Ubuntu default install on VM
  sudo apt install build-essential libasan6 llvm clang libclang-dev
cmake ninja-build git
  sudo apt-get build-dep qtbase5-dev
  sudo apt install libmd4c-html0-dev
  sudo apt install mesa-utils libglu1-mesa-dev freeglut3-dev
mesa-common-dev
  sudo apt install libglew-dev libglfw3-dev libglm-dev
  sudo apt install libao-dev libmpg123-dev
  sudo apt update
  sudo apt upgrade

Qt-Installer install (just as a reference to compare to)
  download qt-unified-linux-x64-4.5.0-online.run
  chmod +x qt-unified-linux-x64-4.5.0-online.run
  ./qt-unified-linux-x64-4.5.0-online.run
  default installs Qt 6.4 in /home/linux/Qt/6.4

build Qt dev
  mkdir ~/qt6_dev
  cd ~/qt6_dev
  git clone git://code.qt.io/qt/qt5.git qt6
  cd qt6
  git checkout dev
  perl init-repository
  cd ..
  mkdir qt6-build
  cd qt6-build
  ../qt6/qtbase/configure -debug -opensource -nomake examples -nomake
tests -prefix ~/qt6_dev/qt6-install > ../qt6_configure.txt 2>&1
  # ==> https://pastebin.com/JDm0p80b  qt6_configure.txt
  cmake --build . --parallel 4
  cmake --install .

then a simple (called qt_tsan_tests_dev but its just a simple main)

  QApplication app( argc, argv );
  QWidget window;
  window.resize( 320, 240 );
  window.show();
  return app.exec();

the build folder of my example does not contain any platform/plugins
etc. folder

the platform folder of my Qt dev build contains these plugins

linux@linux-virtual-machine:~/qt6_dev/qt6-build/plugins/platforms$ ls
libqeglfs.so  libqlinuxfb.so  libqminimalegl.so  libqminimal.so
libqoffscreen.so  libqvkkhrdisplay.so  libqvnc.so

the Qt-Installer 6.4 installation contains these plugins

linux@linux-virtual-machine:~/Qt/6.4.0/gcc_64/plugins/platforms$ ls
  libqeglfs.so libqwayland-egl.so  qoffscreen.debug
  libqlinuxfb.so   libqwayland-generic.so  qvkkhrdisplay.debug
  libqminimalegl.so    libqxcb.so  qvnc.debug
  libqminimal.so   qeglfs.debug    qwayland-egl.debug
  libqoffscreen.so qlinuxfb.debug qwayland-generic.debug
  libqvkkhrdisplay.so  qminimal.debug  qxcb.debug
  libqvnc.so   qminimalegl.debug

both started with QT_DEBUG_PLUGINS=1

the Qt-Installer 6.4 version works out of the box
https://pastebin.com/u0GSqUJR

and the dev build seems to not find the plugins and aborts
https://pastebin.com/RfvsATKz

this is the crash point in QtCreator using my Qt dev build
https://imgur.com/a/PjT8Yqq

setting

QT_QPA_PLATFORM_PLUGIN_PATH=~/qt6_dev/qt6-build/plugins/platforms
./qt_tsan_tests

did not help

and i don't understand why the Qt-Installer version got more platforms
available then my git/dev build?
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Re: [Interest] ASAN (Qt 6.4 + Glib) build shows stackoverflow in trivial Qt program

2022-11-11 Thread Thiago Macieira 
On Thursday, 10 November 2022 23:50:50 PST Dennis Luehring wrote:
> give a wayland plugin not found message and then hangs forever :/

Run with QT_DEBUG_PLUGINS=1 and see why the plugin won't load.

-- 
Thiago Macieira - thiago.macieira (AT) intel.com
  Cloud Software Architect - Intel DCAI Cloud Engineering



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Re: [Interest] ASAN (Qt 6.4 + Glib) build shows stackoverflow in trivial Qt program

2022-11-11 Thread Dennis Luehring 

Am 10.11.2022 um 20:40 schrieb Thiago Macieira:

Fixed in https://codereview.qt-project.org/c/qt/qtbase/+/442720



next problem: i've did patch my source with your fix but now the
application isn't starting
first that its because of ASAN but also a vanilla build of Glib and Qt
gives the same hanging


its somewhere here


https://imgur.com/a/VFAss3D


no idea how to get further


Glib and Qt cleanly build without ASAN/TSAN (they i've showed here
several times) + main with a single QApplication app(...); return
app.exec();
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Re: [Interest] ASAN (Qt 6.4 + Glib) build shows stackoverflow in trivial Qt program

2022-11-10 Thread Dennis Luehring 

Am 10.11.2022 um 20:40 schrieb Thiago Macieira:

Fixed in https://codereview.qt-project.org/c/qt/qtbase/+/442720



patched you fix into my 6.4 source - but the resulting application just
won't start
give a wayland plugin not found message and then hangs forever :/
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Re: [Interest] ASAN (Qt 6.4 + Glib) build shows stackoverflow in trivial Qt program

2022-11-10 Thread Dennis Luehring 

Am 10.11.2022 um 20:40 schrieb Thiago Macieira:

Which uses this macro:
https://gitlab.gnome.org/GNOME/glib/-/blob/2.72.1/gobject/
gvaluecollector.h#L213-252

There's no support in it for boolean (1-byte) properties. The problem is that
f*&*!)ing Glib is written in C and refuses to use bool. They have:

typedef intgint;
typedef gint   gboolean;

So their boolean is a 4-byte type.

Fixed in https://codereview.qt-project.org/c/qt/qtbase/+/442720



thanks for the fix, i check how far i get with this


but i would think that a ASAN build of Glib wouldn't be that bad in the
ASAN CI-config, if the server isn't exploding already :)

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Re: [Interest] ASAN (Qt 6.4 + Glib) build shows stackoverflow in trivial Qt program

2022-11-10 Thread Thiago Macieira 
On Thursday, 10 November 2022 00:23:52 PST Dennis Luehring wrote:
>  #1 0x7f08b15289a1 in g_object_get_valist ../glib/gobject/gobject.c:2659
>  #2 0x7f08b1529029 in g_object_get ../glib/gobject/gobject.c:2754
>  #3 0x7f08b3eee24b in gtkSetting

template 
static T gtkSetting(const gchar *propertyName)
{
GtkSettings *settings = gtk_settings_get_default();
T value;
g_object_get(settings, propertyName, , NULL);
return value;
}

The GLib line is:

  G_VALUE_LCOPY (, var_args, 0, );

Which uses this macro:
https://gitlab.gnome.org/GNOME/glib/-/blob/2.72.1/gobject/
gvaluecollector.h#L213-252

There's no support in it for boolean (1-byte) properties. The problem is that 
f*&*!)ing Glib is written in C and refuses to use bool. They have:

typedef intgint;
typedef gint   gboolean;

So their boolean is a 4-byte type.

Fixed in https://codereview.qt-project.org/c/qt/qtbase/+/442720

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Thiago Macieira - thiago.macieira (AT) intel.com
  Cloud Software Architect - Intel DCAI Cloud Engineering



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