wxGtk 3.3.3 : Crash in wxGetDescFromOSRelease in static build (Issue #27038)

Christo Joseph

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Sep 20, 2026, 1:10:39 AM (yesterday) Sep 20

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josephch created an issue (wxWidgets/wxWidgets#27038)

Bug description:

Crash during startup. I compiled code::blocks statically with wxWidgets 3.3.3 Gtk. Configure command used is given below.

../configure \
          --prefix=${WX_PREFIX} \
          --disable-shared \
          --disable-sys-libs \
          --with-gtk=3 \
          --enable-secretstore=no \
          --enable-debug

Stack trace:

#0  0x0000555556777cd4 in wxString::AsChar (this=0x7fffffffcfc0, conv=...) at ../src/common/string.cpp:514
#1  0x0000555556015d36 in wxString::AsCharBuf (this=0x7fffffffcfc0, conv=...) at ../include/wx/string.h:3820
#2  0x0000555556015840 in wxString::mb_str (this=0x7fffffffcfc0, conv=...) at ../include/wx/string.h:1889
#3  0x00005555562817c2 in wxString::fn_str (this=0x7fffffffcfc0) at ../include/wx/string.h:1907
#4  0x00005555567328ce in wxLstat (path=..., buf=0x7fffffffd070) at ../include/wx/filefn.h:377
#5  0x000055555672a010 in (anonymous namespace)::DoStatAny (st=..., path=..., dereference=false) at ../src/common/filename.cpp:341
#6  0x000055555672a077 in (anonymous namespace)::StatAny (st=..., path=..., flags=8191) at ../src/common/filename.cpp:350
#7  0x000055555672b156 in (anonymous namespace)::wxFileSystemObjectExists (path=..., flags=8191) at ../src/common/filename.cpp:692
#8  0x000055555672b530 in wxFileName::Exists (path=..., flags=8191) at ../src/common/filename.cpp:764
#9  0x00005555567fbb95 in wxGetDescFromOSRelease
    (distName=0x7fffffffd520, version=0x7fffffffd550, parentName=0x7fffffffd580, parentCodeName=0x7fffffffd5b0) at ../src/unix/utilsunx.cpp:1273
#10 0x00005555567fc1e3 in wxGetOsDescription () at ../src/unix/utilsunx.cpp:1301
#11 0x0000555555ecfcf1 in __static_initialization_and_destruction_0(int, int) [clone .constprop.0] ()
#12 0x00007ffff5e2a304 in call_init (env=<optimized out>, argv=0x7fffffffdc78, argc=1) at ../csu/libc-start.c:145
#13 __libc_start_main_impl
    (main=0x555555ecf160 <main>, argc=1, argv=0x7fffffffdc78, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffdc68) at ../csu/libc-start.c:347
#14 0x0000555555eeb715 in _start ()

Platform and version information

wxWidgets version you use: 3.3.3
wxWidgets port you use: wxGTK
OS and its version: Ubuntu 22.04

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Christo Joseph

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Sep 20, 2026, 2:41:34 AM (yesterday) Sep 20

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josephch left a comment (wxWidgets/wxWidgets#27038)

Issue is not seen when #9956c25c07f67bf392db653868f1ae39b71da667 and #7c3e00ccbd7bd1d24adbc6717902ad8819c85b79 are reverted

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VZ

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Sep 20, 2026, 12:49:00 PM (yesterday) Sep 20

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vadz left a comment (wxWidgets/wxWidgets#27038)

Thanks, I can reproduce this with

#include <wx/init.h>
#include <wx/crt.h>
#include <wx/utils.h>

static wxString desc = wxGetOsDescription();

int main(int argc, char **argv)
{
    wxInitializer init(argc, argv);
    if ( !init.IsOk() ) {
        fprintf(stderr, "Failed to initialize wxWidgets.\n");
        return 1;
    }

    wxPrintf("OS description: %s\n", desc);
    return 0;
}

Will take a look.

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VZ

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Sep 20, 2026, 12:51:55 PM (yesterday) Sep 20

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vadz left a comment (wxWidgets/wxWidgets#27038)

OK, this is because we use wxConvFileName directly instead of using an accessor and it's not initialized yet at static initialization time. This needs to be fixed...

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VZ

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Sep 20, 2026, 1:04:37 PM (yesterday) Sep 20

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vadz left a comment (wxWidgets/wxWidgets#27038)

... but after fixing this, it still crashes because wxStandardPaths::Get() doesn't work at this stage either yet.

It would be really better to avoid doing anything file-related during static initialization, of course...

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VZ

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Sep 20, 2026, 4:59:09 PM (yesterday) Sep 20

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Closed #27038 as completed via 535a7bb.

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