wxWebView crashes C++ app on LoadURL

wxtrac commented 10 years ago

Issue migrated from trac ticket # 16439

component: WebView | priority: normal | keywords: webview loadurl ubuntu

2014-08-20 18:48:34: gonzobongo created the issue

I'm developing a cross platform desktop app in C++ using wxWidgets for all the GUI. For the login I'm letting the user the option to log in with his FB account. For that I place a fb login button that when pressed displays a wxWebView that launches the fb authentication URL:

m_WebView->LoadURL(wxT("https://www.facebook.com/dialog/oauth?client_id=MY_FB_CLIENT_ID&response_type=token&redirect_uri=MY_REDIRECT_URI"));

I have defined also all the wxWebViewEventHandler's to retrieve the FB login token and all once I log-in succesfully. So far so good.

My problem comes when using and debugging the app on Ubuntu 14.04 (It worked with Mac and Windows and Fedora 20). I succeeded loading the Fb authentication uri, but right after I log in with my fb user, the webview window closes down and crashes my whole app, printing on the console the message "Segmentation fault (core dumped)".

It has to be a wxWidgets/webkit Ubuntu related bug because I can't reproduce it neither in Mac nor Windows nor Fedora distributions, and using the same code when compiling for all the different platforms.

I have also included all the necessary webkit flags when compiling wxWidgets (--enable-webkit --enable-webview --enable-webviewwebkit) without raising any error.

wxtrac commented 10 years ago

2014-08-20 22:54:37: @vadz commented

We need either a way to reproduce the crash in the webview sample or a full stack (with symbols) at the moment of the crash and preferably both.

wxtrac commented 9 years ago

2015-08-20 10:59:22: rtorrero commented

Hi,

We are experiencing the same issue here: with wxWidgets 3.0.2 only under Ubuntu (tested on 12.04, 14.04 and 15.04, all share the same issue).

Under CentOS 7 and Windows everything works.

We are not able to get usefull stack trace (stack seems corrupted).

Valgrind reports: ==19248## Warning: client switching stacks? SP change: 0x7fefff988 --> 0xede4da5c7037743719248## to suppress, use: --max-stackframe=1304677935819031889 or greater19248## Use of uninitialised value of size 819248== at 0x972FDEE: __longjmp_chk (__longjmp_chk.S:116)

Any idea where to begin looking?

wxtrac commented 9 years ago

2015-08-20 16:08:07: rtorrero commented

Hi again,

We have managed to isolate the line responsible for the segfault in our code:

::wxInitAllImageHandlers();

It is possible to reproduce this in the webview sample (inside wxwidget samples directory), just add the line inside the WebApp::OnInit() method.

Sometimes it doesn't crash immediately. Doing a search on google images usually does the job.

wxWidgets version: 3.0.2.0 OS: Ubuntu x86_64 15.04

wxtrac commented 9 years ago

2015-08-20 17:06:17: rtorrero commented

More info: The problem is also exposed when adding the JPEG handler manually.

WxImage::AddHandler(new wxJPEGHandler);

wxtrac commented 9 years ago

2015-08-20 23:13:18: @vadz commented

So this is probably due to an incompatibility between libjpeg used by wxWidgets and the one used by the webview library itself. However I'm still not sure how is this possible: don't they both link with the system version of the library?

wxtrac commented 9 years ago

2015-08-21 11:06:55: rtorrero commented

It seems that CentOS 7 is using libjpeg62, and both libwebkitgtk and wxwidgets link to it.

However, in Ubuntu libjpeg8 is used as default, and both libwekitgtk and wxwidgets are built against it. libjpeg62 is also available there, but still binary packages seem to be built against libjpeg8 anyways.

Could the issue be an incompatibility with libjpeg8?

wxtrac commented 9 years ago

2015-08-21 23:54:47: @vadz commented

If you look at the list of loaded modules when it crashes, which libjpeg do you see? Could it be that 6.2 is somehow loaded even when 8 should be used?

wxtrac commented 9 years ago

2015-08-24 10:13:11: rtorrero commented

Hope this is usefull:

For this test, I made two modifications to the webview sample:

Modified the webview sample to go to http://google.com instead of http://wxwidgets.org (The latter causes an immediate crash that makes it harder to debug)
Added the JPEG handler that causes the crash

Tests:

I start the sample, and run a lsof to check the loaded libraries:

ruben@ubuntuvirt:~$ webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG webview 3573 ruben mem REG lsof -p 3573 | grep .so 8,1 80888 1048064 /usr/lib/x86_64-linux-gnu/pkcs11/gnome-keyring-pkcs11.so 8,1 228976 1048065 /usr/lib/x86_64-linux-gnu/pkcs11/p11-kit-trust.so 8,1 80256 534334 /usr/lib/x86_64-linux-gnu/libtasn1.so.6.2.0 8,1 775112 533831 /usr/lib/x86_64-linux-gnu/libgnutls.so.26.22.6 8,1 268368 534151 /usr/lib/x86_64-linux-gnu/libp11-kit.so.0.0.0 8,1 106776 1047505 /usr/lib/x86_64-linux-gnu/gio/modules/libgiognutls.so 8,1 22952 789607 /lib/x86_64-linux-gnu/libnss_dns-2.19.so 8,1 10432 789615 /lib/x86_64-linux-gnu/libnss_mdns4_minimal.so.2 8,1 47712 789609 /lib/x86_64-linux-gnu/libnss_files-2.19.so 8,1 18792 1047504 /usr/lib/x86_64-linux-gnu/gio/modules/libgiognomeproxy.so 8,1 105440 531566 /usr/lib/mozilla/plugins/libtotem-gmp-plugin.so 8,1 100720 531565 /usr/lib/mozilla/plugins/libtotem-cone-plugin.so 8,1 72048 531567 /usr/lib/mozilla/plugins/libtotem-mully-plugin.so 8,1 6096 531564 /usr/lib/mozilla/plugins/librhythmbox-itms-detection-plugin.so 8,1 22872 528982 /usr/lib/libtotem-plparser-mini.so.18.1.0 8,1 80576 531568 /usr/lib/mozilla/plugins/libtotem-narrowspace-plugin.so 8,1 346088 533976 /usr/lib/x86_64-linux-gnu/libhunspell-1.3.so.0.0.0 8,1 22456 1046857 /usr/lib/x86_64-linux-gnu/enchant/libenchant_myspell.so 8,1 55848 1046855 /usr/lib/x86_64-linux-gnu/enchant/libenchant_hspell.so 8,1 764848 528775 /usr/lib/libaspell.so.15.2.0 8,1 10080 1046854 /usr/lib/x86_64-linux-gnu/enchant/libenchant_aspell.so 8,1 51208 1046856 /usr/lib/x86_64-linux-gnu/enchant/libenchant_ispell.so 8,1 377176 533980 /usr/lib/x86_64-linux-gnu/libibus-1.0.so.5.0.505 8,1 31752 1047772 /usr/lib/x86_64-linux-gnu/gtk-3.0/3.0.0/immodules/im-ibus.so 8,1 240240 533606 /usr/lib/x86_64-linux-gnu/libcroco-0.6.so.3.0.1 8,1 217704 534255 /usr/lib/x86_64-linux-gnu/librsvg-2.so.2.40.2 8,1 10480 1047434 /usr/lib/x86_64-linux-gnu/gdk-pixbuf-2.0/2.10.0/loaders/libpixbufloader-svg.so 8,1 23152 1047430 /usr/lib/x86_64-linux-gnu/gdk-pixbuf-2.0/2.10.0/loaders/libpixbufloader-png.so 8,1 34624 534143 /usr/lib/x86_64-linux-gnu/libogg.so.0.8.1 8,1 182584 534417 /usr/lib/x86_64-linux-gnu/libvorbis.so.0.4.5 8,1 39496 534049 /usr/lib/x86_64-linux-gnu/libltdl.so.7.3.0 8,1 72048 534338 /usr/lib/x86_64-linux-gnu/libtdb.so.1.2.12 8,1 31080 534421 /usr/lib/x86_64-linux-gnu/libvorbisfile.so.3.3.4 8,1 64256 533563 /usr/lib/x86_64-linux-gnu/libcanberra.so.0.2.5 8,1 18824 533561 /usr/lib/x86_64-linux-gnu/libcanberra-gtk3.so.0.1.9 8,1 23112 1047787 /usr/lib/x86_64-linux-gnu/gtk-3.0/modules/libcanberra-gtk3-module.so 8,1 14656 1047785 /usr/lib/x86_64-linux-gnu/gtk-3.0/3.0.0/theming-engines/libunico.so 8,1 38920 789596 /lib/x86_64-linux-gnu/libnih-dbus.so.1.0.0 8,1 96280 789598 /lib/x86_64-linux-gnu/libnih.so.1.0.0 8,1 108480 789539 /lib/x86_64-linux-gnu/libcgmanager.so.0.0.0 8,1 67600 789682 /lib/x86_64-linux-gnu/libudev.so.1.3.5 8,1 237504 1047808 /usr/lib/x86_64-linux-gnu/gvfs/libgvfscommon.so 8,1 202696 1047508 /usr/lib/x86_64-linux-gnu/gio/modules/libgvfsdbus.so 8,1 52448 1047503 /usr/lib/x86_64-linux-gnu/gio/modules/libdconfsettings.so 8,1 118392 1047507 /usr/lib/x86_64-linux-gnu/gio/modules/libgioremote-volume-monitor.so 8,1 68752 534389 /usr/lib/x86_64-linux-gnu/libunity-gtk3-parser.so.0.0.0 8,1 23168 1047789 /usr/lib/x86_64-linux-gnu/gtk-3.0/modules/libunity-gtk-module.so 8,1 77488 1047788 /usr/lib/x86_64-linux-gnu/gtk-3.0/modules/liboverlay-scrollbar.so 8,1 10336 1047406 /usr/lib/x86_64-linux-gnu/gconv/UTF-32.so 8,1 18416 789567 /lib/x86_64-linux-gnu/libgpg-error.so.0.10.0 8,1 26512 533627 /usr/lib/x86_64-linux-gnu/libdatrie.so.1.3.1 8,1 281552 789548 /lib/x86_64-linux-gnu/libdbus-1.so.3.7.6 8,1 178328 533524 /usr/lib/x86_64-linux-gnu/libatspi.so.0.0.1 8,1 23512848 533982 /usr/lib/x86_64-linux-gnu/libicudata.so.52.1 8,1 47400 533666 /usr/lib/x86_64-linux-gnu/libdrm.so.2.4.0 8,1 22720 533475 /usr/lib/x86_64-linux-gnu/libXxf86vm.so.1.0.0 8,1 6096 534500 /usr/lib/x86_64-linux-gnu/libxshmfence.so.1.0.0 8,1 22624 534482 /usr/lib/x86_64-linux-gnu/libxcb-sync.so.1.0.0 8,1 10320 534470 /usr/lib/x86_64-linux-gnu/libxcb-present.so.0.0.0 8,1 10336 534460 /usr/lib/x86_64-linux-gnu/libxcb-dri3.so.0.0.0 8,1 18512 534458 /usr/lib/x86_64-linux-gnu/libxcb-dri2.so.0.0.0 8,1 92240 534462 /usr/lib/x86_64-linux-gnu/libxcb-glx.so.0.0.0 8,1 5992 533418 /usr/lib/x86_64-linux-gnu/libX11-xcb.so.1.0.0 8,1 166136 533811 /usr/lib/x86_64-linux-gnu/libglapi.so.0.0.0 8,1 170064 789556 /lib/x86_64-linux-gnu/libexpat.so.1.6.0 8,1 137400 789581 /lib/x86_64-linux-gnu/liblzma.so.5.0.0 8,1 101240 789660 /lib/x86_64-linux-gnu/libresolv-2.19.so 8,1 134296 789664 /lib/x86_64-linux-gnu/libselinux.so.1 8,1 524704 789563 /lib/x86_64-linux-gnu/libgcrypt.so.11.8.2 8,1 533488 534147 /usr/lib/x86_64-linux-gnu/liborc-0.4.so.0.18.0 8,1 229968 533936 /usr/lib/x86_64-linux-gnu/libgsttag-1.0.so.0.204.0 8,1 160832 533630 /usr/lib/x86_64-linux-gnu/libdbus-glib-1.so.2.2.2 8,1 112936 533853 /usr/lib/x86_64-linux-gnu/libgraphite2.so.3.0.1 8,1 22616 533435 /usr/lib/x86_64-linux-gnu/libXdmcp.so.6.0.0 8,1 14456 533424 /usr/lib/x86_64-linux-gnu/libXau.so.6.0.0 8,1 252032 789637 /lib/x86_64-linux-gnu/libpcre.so.3.13.1 8,1 30944 533706 /usr/lib/x86_64-linux-gnu/libffi.so.6.0.1 8,1 31792 789662 /lib/x86_64-linux-gnu/librt-2.19.so 8,1 34912 534476 /usr/lib/x86_64-linux-gnu/libxcb-render.so.0.0.0 8,1 10336 534480 /usr/lib/x86_64-linux-gnu/libxcb-shm.so.0.0.0 8,1 690968 534182 /usr/lib/x86_64-linux-gnu/libpixman-1.so.0.30.2 8,1 36936 534350 /usr/lib/x86_64-linux-gnu/libthai.so.0.2.0 8,1 73288 533437 /usr/lib/x86_64-linux-gnu/libXext.so.6.4.0 8,1 31104 534432 /usr/lib/x86_64-linux-gnu/libwayland-cursor.so.0.0.0 8,1 235864 534494 /usr/lib/x86_64-linux-gnu/libxkbcommon.so.0.0.0 8,1 52400 534430 /usr/lib/x86_64-linux-gnu/libwayland-client.so.0.2.0 8,1 39232 533431 /usr/lib/x86_64-linux-gnu/libXcursor.so.1.0.2 8,1 39128 533457 /usr/lib/x86_64-linux-gnu/libXrandr.so.2.2.0 8,1 10376 533447 /usr/lib/x86_64-linux-gnu/libXinerama.so.1.0.0 8,1 86056 534163 /usr/lib/x86_64-linux-gnu/libpangoft2-1.0.so.0.3600.3 8,1 173304 533518 /usr/lib/x86_64-linux-gnu/libatk-bridge-2.0.so.0.0.0 8,1 34880 533553 /usr/lib/x86_64-linux-gnu/libcairo-gobject.so.2.11301.0 8,1 22584 533439 /usr/lib/x86_64-linux-gnu/libXfixes.so.3.1.0 8,1 63880 533445 /usr/lib/x86_64-linux-gnu/libXi.so.6.1.0 8,1 413232 533463 /usr/lib/x86_64-linux-gnu/libXt.so.6.0.0 8,1 39352 533459 /usr/lib/x86_64-linux-gnu/libXrender.so.1.3.0 8,1 10248 533433 /usr/lib/x86_64-linux-gnu/libXdamage.so.1.1.0 8,1 10232 533429 /usr/lib/x86_64-linux-gnu/libXcomposite.so.1.0.0 8,1 338224 534442 /usr/lib/x86_64-linux-gnu/libwebp.so.5.0.0 8,1 1525776 533996 /usr/lib/x86_64-linux-gnu/libicuuc.so.52.1 8,1 2121040 533984 /usr/lib/x86_64-linux-gnu/libicui18n.so.52.1 8,1 754880 534318 /usr/lib/x86_64-linux-gnu/libsqlite3.so.0.8.6 8,1 666080 533748 /usr/lib/x86_64-linux-gnu/libfreetype.so.6.11.1 8,1 244704 533720 /usr/lib/x86_64-linux-gnu/libfontconfig.so.1.8.0 8,1 594456 1047949 /usr/lib/x86_64-linux-gnu/mesa/libGL.so.1.2.0 8,1 1461496 534498 /usr/lib/x86_64-linux-gnu/libxml2.so.2.9.1 8,1 247952 534502 /usr/lib/x86_64-linux-gnu/libxslt.so.1.1.28 8,1 1513096 533807 /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0.4002.0 8,1 782640 534306 /usr/lib/x86_64-linux-gnu/libsoup-2.4.so.1.7.0 8,1 320288 534281 /usr/lib/x86_64-linux-gnu/libsecret-1.so.0.0.0 8,1 281288 534024 /usr/lib/x86_64-linux-gnu/libjpeg.so.8.0.2 8,1 138096 533516 /usr/lib/x86_64-linux-gnu/libatk-1.0.so.0.21009.1 8,1 1058192 533916 /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0.204.0 8,1 361152 533876 /usr/lib/x86_64-linux-gnu/libgstbase-1.0.so.0.204.0 8,1 286776 533940 /usr/lib/x86_64-linux-gnu/libgstvideo-1.0.so.0.204.0 8,1 155744 533908 /usr/lib/x86_64-linux-gnu/libgstpbutils-1.0.so.0.204.0 8,1 38952 533896 /usr/lib/x86_64-linux-gnu/libgstfft-1.0.so.0.204.0 8,1 303048 533872 /usr/lib/x86_64-linux-gnu/libgstaudio-1.0.so.0.204.0 8,1 52240 533868 /usr/lib/x86_64-linux-gnu/libgstapp-1.0.so.0.204.0 8,1 14592 533819 /usr/lib/x86_64-linux-gnu/libgmodule-2.0.so.0.4002.0 8,1 88864 533799 /usr/lib/x86_64-linux-gnu/libgeoclue.so.0.0.0 8,1 347024 533966 /usr/lib/x86_64-linux-gnu/libharfbuzz.so.0.927.0 8,1 10208 533964 /usr/lib/x86_64-linux-gnu/libharfbuzz-icu.so.0.927.0 8,1 46944 533682 /usr/lib/x86_64-linux-gnu/libenchant.so.1.6.0 8,1 6886704 534021 /usr/lib/x86_64-linux-gnu/libjavascriptcoregtk-3.0.so.0.16.16 8,1 18936 789692 /lib/x86_64-linux-gnu/libuuid.so.1.3.0 8,1 98288 533294 /usr/lib/x86_64-linux-gnu/libICE.so.6.3.0 8,1 125392 534490 /usr/lib/x86_64-linux-gnu/libxcb.so.1.1.0 8,1 1840928 789534 /lib/x86_64-linux-gnu/libc-2.19.so 8,1 141574 789654 /lib/x86_64-linux-gnu/libpthread-2.19.so 8,1 90080 789561 /lib/x86_64-linux-gnu/libgcc_s.so.1 8,1 1071552 789584 /lib/x86_64-linux-gnu/libm-2.19.so 8,1 979056 534328 /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.19 8,1 14664 789551 /lib/x86_64-linux-gnu/libdl-2.19.so 8,1 100728 789697 /lib/x86_64-linux-gnu/libz.so.1.2.8 8,1 153936 789649 /lib/x86_64-linux-gnu/libpng12.so.0.50.0 8,1 1078368 789565 /lib/x86_64-linux-gnu/libglib-2.0.so.0.4002.0 8,1 330904 533835 /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.4002.0 8,1 1086808 533555 /usr/lib/x86_64-linux-gnu/libcairo.so.2.11301.0 8,1 315672 534159 /usr/lib/x86_64-linux-gnu/libpango-1.0.so.0.3600.3 8,1 134496 533783 /usr/lib/x86_64-linux-gnu/libgdk_pixbuf-2.0.so.0.3000.7 8,1 52528 534161 /usr/lib/x86_64-linux-gnu/libpangocairo-1.0.so.0.3600.3 8,1 680376 533779 /usr/lib/x86_64-linux-gnu/libgdk-3.so.0.1000.8 8,1 5297920 533944 /usr/lib/x86_64-linux-gnu/libgtk-3.so.0.1000.8 8,1 31657904 534440 /usr/lib/x86_64-linux-gnu/libwebkitgtk-3.0.so.0.22.14 8,1 30896 533416 /usr/lib/x86_64-linux-gnu/libSM.so.6.0.1 8,1 1265072 533420 /usr/lib/x86_64-linux-gnu/libX11.so.6.3.0 8,1 149120 789510 /lib/x86_64-linux-gnu/ld-2.19.so

As you see, libjpeg.so.8.0.2 is beeing loaded.

Then I attach strace and output everything to a log file. I force the crash by doing a search in google.

It doesn't seem like it is loading any other library before crashing:

ruben@ubuntuvirt:~/wxwidgets-3/trunk/samples/webview$ cat strace-output.log | grep jpeg open("/usr/lib/x86_64-linux-gnu/libjpeg.so.8", O_RDONLY|O_CLOEXEC) = 3 stat("/usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstjpeg.so", {st_mode=S_IFREG|0644, st_size=44368, ...}) = 0 stat("/usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstjpegformat.so", {st_mode=S_IFREG|0644, st_size=40128, ...}) = 0

In case its usefull, this is the report that I get after running the configure script:

Configured wxWidgets 3.0.2 for `x86_64-unknown-linux-gnu'

Which GUI toolkit should wxWidgets use? GTK+ 3 with support for GTK+ printing libnotify Should wxWidgets be compiled into single library? no Should wxWidgets be linked as a shared library? no Should wxWidgets support Unicode? yes (using UTF-8) What level of wxWidgets compatibility should be enabled? wxWidgets 2.6 no wxWidgets 2.8 yes Which libraries should wxWidgets use? STL no jpeg builtin png sys regex builtin tiff builtin zlib sys expat sys libmspack no sdl no

Note how jpeg says 'builtin'. CentOS also reports 'builtin', however, CentOS doesn't crash.

wxtrac commented 9 years ago

2015-08-24 14:36:58: @vadz commented

"builtin" is definitely wrong, as I wrote in the comment:5 wx should be configured to use the system library under Linux, please look at your config.log, determine why configure didn't find it, fix the problem and re-configure with --with-libjpeg=sys and rebuild to fix it.

Of course, it's still wrong that it crashes when using the built-in library and I suspect that we need to do something similar to #16550 (after determining how to do this in the best way...) to fix this, but at least using the system library should make things work.

wxtrac commented 9 years ago

2015-08-24 15:33:01: rtorrero commented

After checking config.log it was obvious that I was missing libjpeg headers. Installing libjpeg-dev, rebuilding wxwidgets and the webview sample fixes the problem.

The configure script now reports to be using system's libjpeg instead of the builtin one.

Thanks!

PS: Until this is fixed it would probably be good idea to force an error in the configure script when sys libjpeg can't be used.

wxtrac commented 7 years ago

2017-08-24 21:13:26: sbrowne (Steve) commented

I'm still working through issues we just found regarding this too since we're just now introducing wxWebView in our application. One thing to keep in mind is that the Ubuntu packages for libwebkitgtk-1.0 are linked specifically against libjpeg.so.8. Meanwhile the OS has both 62 and 8 available. So linking against the sys version depends on which version of libjpeg*-dev you have installed at the time of building wxWidgets.

To add even more confusion we have another library that was statically linking libjpegturbo that was causing problems as well. We got around that one by using -Wl,--exclude-libs=ALL.

I'm thinking a similar thing could be used for resolving both this and the expat issues. The exclude libs parameter allows you to be more specific with something like -Wl,--exclude-libs=jpeg. I used this to compile wxWidgets --with-jpeg=builtin and excluded the symbol exports coming from libjpeg and it seems to be working around this issue. Note that while I agree that sys is preferred over builtin it still doesn't really solve the issue unless sys matches the libjpeg version used by libwebkitgtk. In our case we still need to support back to Ubuntu 8.04 which doesn't have libjpeg8 and wxWebView is just an optional component for us if libwebkitgtk is on the system.

So far my testing seems to be going well using builtin and exclude-libs=jpeg.

wxWidgets / wxWidgets