This is the same issue as described here: https://bbs.archlinux.org/viewtopic.php?id=295528 So far no workable solution is known. This is a regression, but since I haven't been using it for a couple of months, I have no idea on what circumstances it appeared.
Created attachment 896646 [details] emerge --info output, greater than copy-paste limit
Can you describe the problem yourself inline here too, including some steps to reproduce?
I'm starting kdiff3 as such: $ kdiff3 file1.txt file2.txt both files in the current directory (namely, in my home directory). The kdiff3 window opens as usual, but no file content is being displayed. At the same time, a popup window appears with the message: Opening of these files failed: - /home/myusername/file1.txt Opening /home/myusername/file1.txt failed. Unknown error - /home/myusername/file2.txt Opening /home/myusername/file2.txt failed. Unknown error I've deleted all of the kdiff3* files in the /home/myusername/.config directory (including kdiff3rc file), it didn't help.
Version?
$ emerge -pv kdiff3 These are the packages that would be merged, in order: Calculating dependencies... done! Dependency resolution took 15.10 s (backtrack: 0/20). [ebuild R ] kde-misc/kdiff3-1.11.1:5::gentoo USE="handbook -debug" 0 KiB Total: 1 package (1 reinstall), Size of downloads: 0 KiB $ ldd `which kdiff3` linux-vdso.so.1 (0x00007ffed0a6d000) libKF5XmlGui.so.5 => /usr/lib64/libKF5XmlGui.so.5 (0x00007f397a3e4000) libQt5PrintSupport.so.5 => /usr/lib64/libQt5PrintSupport.so.5 (0x00007f397a371000) libKF5ConfigWidgets.so.5 => /usr/lib64/libKF5ConfigWidgets.so.5 (0x00007f397a302000) libKF5KIOCore.so.5 => /usr/lib64/libKF5KIOCore.so.5 (0x00007f397a15f000) libKF5Crash.so.5 => /usr/lib64/libKF5Crash.so.5 (0x00007f397a154000) libKF5I18n.so.5 => /usr/lib64/libKF5I18n.so.5 (0x00007f397a0ff000) libKF5CoreAddons.so.5 => /usr/lib64/libKF5CoreAddons.so.5 (0x00007f397a034000) libKF5ConfigCore.so.5 => /usr/lib64/libKF5ConfigCore.so.5 (0x00007f3979fcb000) libKF5WidgetsAddons.so.5 => /usr/lib64/libKF5WidgetsAddons.so.5 (0x00007f3979e6e000) libQt5Widgets.so.5 => /usr/lib64/libQt5Widgets.so.5 (0x00007f3979828000) libQt5Gui.so.5 => /usr/lib64/libQt5Gui.so.5 (0x00007f3979258000) libQt5Core.so.5 => /usr/lib64/libQt5Core.so.5 (0x00007f3978d12000) libstdc++.so.6 => /usr/lib/gcc/x86_64-pc-linux-gnu/13/libstdc++.so.6 (0x00007f3978a24000) libm.so.6 => /usr/lib64/libm.so.6 (0x00007f3978944000) libgcc_s.so.1 => /usr/lib/gcc/x86_64-pc-linux-gnu/13/libgcc_s.so.1 (0x00007f397891f000) libc.so.6 => /usr/lib64/libc.so.6 (0x00007f3978739000) libKF5GlobalAccel.so.5 => /usr/lib64/libKF5GlobalAccel.so.5 (0x00007f3978717000) libQt5Network.so.5 => /usr/lib64/libQt5Network.so.5 (0x00007f3978575000) libKF5ItemViews.so.5 => /usr/lib64/libKF5ItemViews.so.5 (0x00007f3978538000) libKF5IconThemes.so.5 => /usr/lib64/libKF5IconThemes.so.5 (0x00007f39784f2000) libKF5GuiAddons.so.5 => /usr/lib64/libKF5GuiAddons.so.5 (0x00007f39784ae000) libKF5ConfigGui.so.5 => /usr/lib64/libKF5ConfigGui.so.5 (0x00007f3978487000) libQt5Xml.so.5 => /usr/lib64/libQt5Xml.so.5 (0x00007f3978445000) libQt5DBus.so.5 => /usr/lib64/libQt5DBus.so.5 (0x00007f39783b6000) libKF5Codecs.so.5 => /usr/lib64/libKF5Codecs.so.5 (0x00007f3978379000) libKF5AuthCore.so.5 => /usr/lib64/libKF5AuthCore.so.5 (0x00007f3978364000) /lib64/ld-linux-x86-64.so.2 (0x00007f397a6d5000) libKF5Service.so.5 => /usr/lib64/libKF5Service.so.5 (0x00007f39782c2000) libacl.so.1 => /usr/lib64/libacl.so.1 (0x00007f39782b7000) libmount.so.1 => /usr/lib64/libmount.so.1 (0x00007f397824b000) libQt5X11Extras.so.5 => /usr/lib64/libQt5X11Extras.so.5 (0x00007f3978242000) libX11.so.6 => /usr/lib64/libX11.so.6 (0x00007f3978104000) libudev.so.1 => /usr/lib64/libudev.so.1 (0x00007f39780c3000) libGL.so.1 => /usr/lib64/libGL.so.1 (0x00007f3978050000) libpng16.so.16 => /usr/lib64/libpng16.so.16 (0x00007f3978016000) libz.so.1 => /usr/lib64/libz.so.1 (0x00007f3977ffa000) libharfbuzz.so.0 => /usr/lib64/libharfbuzz.so.0 (0x00007f3977ecc000) libdouble-conversion.so.3 => /usr/lib64/libdouble-conversion.so.3 (0x00007f3977eb5000) libicui18n.so.74 => /usr/lib64/libicui18n.so.74 (0x00007f3977ba1000) libicuuc.so.74 => /usr/lib64/libicuuc.so.74 (0x00007f39779b9000) libpcre2-16.so.0 => /usr/lib64/libpcre2-16.so.0 (0x00007f3977927000) libglib-2.0.so.0 => /usr/lib64/libglib-2.0.so.0 (0x00007f39777de000) libgssapi_krb5.so.2 => /usr/lib64/libgssapi_krb5.so.2 (0x00007f397778d000) libproxy.so.1 => /usr/lib64/libproxy.so.1 (0x00007f3977788000) libssl.so.3 => /usr/lib64/libssl.so.3 (0x00007f39776f0000) libcrypto.so.3 => /usr/lib64/libcrypto.so.3 (0x00007f397731f000) libQt5Svg.so.5 => /usr/lib64/libQt5Svg.so.5 (0x00007f39772c5000) libKF5Archive.so.5 => /usr/lib64/libKF5Archive.so.5 (0x00007f3977287000) libQt5WaylandClient.so.5 => /usr/lib64/libQt5WaylandClient.so.5 (0x00007f3977148000) libwayland-client.so.0 => /usr/lib64/libwayland-client.so.0 (0x00007f3977139000) libdbus-1.so.3 => /usr/lib64/libdbus-1.so.3 (0x00007f39770ec000) libKF5DBusAddons.so.5 => /usr/lib64/libKF5DBusAddons.so.5 (0x00007f39770cd000) libblkid.so.1 => /usr/lib64/libblkid.so.1 (0x00007f3977074000) libcryptsetup.so.12 => /usr/lib64/libcryptsetup.so.12 (0x00007f3976ff5000) libxcb.so.1 => /usr/lib64/libxcb.so.1 (0x00007f3976fca000) libcap.so.2 => /usr/lib64/libcap.so.2 (0x00007f3976fbe000) libGLdispatch.so.0 => /usr/lib64/libGLdispatch.so.0 (0x00007f3976f42000) libGLX.so.0 => /usr/lib64/libGLX.so.0 (0x00007f3976f0f000) libfreetype.so.6 => /usr/lib64/libfreetype.so.6 (0x00007f3976e48000) libgraphite2.so.3 => /usr/lib64/libgraphite2.so.3 (0x00007f3976e23000) libicudata.so.74 => /usr/lib64/libicudata.so.74 (0x00007f39750c3000) libpcre2-8.so.0 => /usr/lib64/libpcre2-8.so.0 (0x00007f3975023000) libkrb5.so.3 => /usr/lib64/libkrb5.so.3 (0x00007f3974f5f000) libk5crypto.so.3 => /usr/lib64/libk5crypto.so.3 (0x00007f3974f30000) libcom_err.so.2 => /usr/lib64/libcom_err.so.2 (0x00007f3974f2a000) libkrb5support.so.0 => /usr/lib64/libkrb5support.so.0 (0x00007f3974f1c000) libkeyutils.so.1 => /usr/lib64/libkeyutils.so.1 (0x00007f3974f15000) libresolv.so.2 => /usr/lib64/libresolv.so.2 (0x00007f3974f02000) libpxbackend-1.0.so => /usr/lib64/libproxy/libpxbackend-1.0.so (0x00007f3974ef7000) libgobject-2.0.so.0 => /usr/lib64/libgobject-2.0.so.0 (0x00007f3974e9b000) libbz2.so.1 => /usr/lib64/libbz2.so.1 (0x00007f3974e88000) liblzma.so.5 => /usr/lib64/liblzma.so.5 (0x00007f3974e59000) libzstd.so.1 => /usr/lib64/libzstd.so.1 (0x00007f3974d91000) libwayland-cursor.so.0 => /usr/lib64/libwayland-cursor.so.0 (0x00007f3974d88000) libfontconfig.so.1 => /usr/lib64/libfontconfig.so.1 (0x00007f3974d3d000) libxkbcommon.so.0 => /usr/lib64/libxkbcommon.so.0 (0x00007f3974cf6000) libffi.so.8 => /usr/lib64/libffi.so.8 (0x00007f3974cea000) libsystemd.so.0 => /usr/lib64/libsystemd.so.0 (0x00007f3974bed000) libuuid.so.1 => /usr/lib64/libuuid.so.1 (0x00007f3974be3000) libdevmapper.so.1.02 => /usr/lib64/libdevmapper.so.1.02 (0x00007f3974b89000) libjson-c.so.5 => /usr/lib64/libjson-c.so.5 (0x00007f3974b76000) libXau.so.6 => /usr/lib64/libXau.so.6 (0x00007f3974b71000) libXdmcp.so.6 => /usr/lib64/libXdmcp.so.6 (0x00007f3974b67000) libbrotlidec.so.1 => /usr/lib64/libbrotlidec.so.1 (0x00007f3974b59000) libgio-2.0.so.0 => /usr/lib64/libgio-2.0.so.0 (0x00007f3974975000) libexpat.so.1 => /usr/lib64/libexpat.so.1 (0x00007f397494c000) libgcrypt.so.20 => /usr/lib64/libgcrypt.so.20 (0x00007f397482f000) liblz4.so.1 => /usr/lib64/liblz4.so.1 (0x00007f3974808000) libbrotlicommon.so.1 => /usr/lib64/libbrotlicommon.so.1 (0x00007f39747e5000) libgmodule-2.0.so.0 => /usr/lib64/libgmodule-2.0.so.0 (0x00007f39747de000) libgpg-error.so.0 => /usr/lib64/libgpg-error.so.0 (0x00007f39747b5000) $
It must die at https://invent.kde.org/sdk/kdiff3/-/blob/master/src/fileaccess.cpp#L930 (two points in that function where it could happen).
Does it fail for any files? What are file1.txt and file2.txt? If I do, say, `touch a b` in /tmp (on tmpfs), I get: ``` $ kdiff3 a b org.kde.kdiff3: Loading A: "/tmp/a" org.kde.kdiff3: Loading B: "/tmp/b" org.kde.kdiff3: Diff: A <-> B org.kde.kdiff3: Linediff: A <-> B org.kde.kdiff3: Enter: calcDiff3LineListUsingAB org.kde.kdiff3: Leave: calcDiff3LineListUsingAB ``` with a window opened and a message saying "Files A and B are binary equal."
I get a crash if I echo "hi" > b. Looking...
These are just regular text files. I've also tried to compare two C codes and two MLIR codes, with the same effect. Then I masked this version (1.11.1) and downgraded kdiff3 to 1.10.7 and this version just works.
(In reply to Paul Osmialowski from comment #9) > These are just regular text files. I've also tried to compare two C codes > and two MLIR codes, with the same effect. Then I masked this version > (1.11.1) and downgraded kdiff3 to 1.10.7 and this version just works. Ah, thanks, that's useful information. I'll compare the two now. The issue I mention above is https://bugs.kde.org/show_bug.cgi?id=487338.
(In reply to Paul Osmialowski from comment #9) > These are just regular text files. I've also tried to compare two C codes > and two MLIR codes, with the same effect. Then I masked this version > (1.11.1) and downgraded kdiff3 to 1.10.7 and this version just works. (A minimal reproducing example, along with `stat` output for the two files would still be useful.)
(In reply to Paul Osmialowski from comment #9) > These are just regular text files. I've also tried to compare two C codes > and two MLIR codes, with the same effect. Then I masked this version > (1.11.1) and downgraded kdiff3 to 1.10.7 and this version just works. diff is https://invent.kde.org/sdk/kdiff3/-/compare/1.10.7...1.11.1?from_project_id=423&straight=false (800 commits!)
(In reply to Sam James from comment #10) > The issue I mention above is https://bugs.kde.org/show_bug.cgi?id=487338. Looks like that one got fixed.
As for the remaining bug here, please file a bug upstream at bugs.kde.org -- I can't reproduce it.
I had the same issue. I bisected to: commit f6aca74944482c1bf5f2df653945a2fb5d2bf660 (HEAD) Author: Michael Reeves <reeves.87@gmail.com> Date: Sun Sep 24 13:06:29 2023 -0400 Delay updateAvailabilities until focus change is competed BUG:462693 FIXED-IN:1.10.6 And indeed reverting that on top of git-HEAD works, as does dropping the revert in /etc/portage/patches/... and rebuilding kde-misc/kdiff3-1.11.2 https://bugs.kde.org/show_bug.cgi?id=462693 seems to be a Windows fix, I don't understand Qt/kde internals enough to go further- but for the short term, I see no reason not to patch it out in Gentoo (or at least for the reporter to try the same.)
Created attachment 897902 [details, diff] patch to revert the windows10 fix
Given I can't reproduce it, could you please file a bug on bugs.kde.org explaining: * how to reproduce it; * the bisect result? Thanks. If you don't want to do that at this time, please try to construct some set of steps to create files (or just upload them here) which have the bad behaviour when kdiff3'd.
I believe this is a /race-condition/, and thus my previous bisect would have been inaccurate... I repeated with 3 launches per test - and landed here: mlashley@duality /var/tmp/portage/kdiff3 ((fb3b7e66...)|BISECTING) $ git bisect bad fb3b7e66d097f41e1e43f9ffe3e94eb48623a48e is the first bad commit commit fb3b7e66d097f41e1e43f9ffe3e94eb48623a48e (HEAD) Author: Michael Reeves <reeves.87@gmail.com> Date: Wed May 17 23:18:50 2023 -0400 Move InitView call to KDiff3App::completeInit src/kdiff3.cpp | 2 ++ src/pdiff.cpp | 4 +--- 2 files changed, 3 insertions(+), 3 deletions(-) (I will update the kde bug when I recover my password there...)
Could you test the commit referenced in the newly linked upstream bug?
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=615c87830b4d962683154eb82d3ff7a319a622e6 commit 615c87830b4d962683154eb82d3ff7a319a622e6 Author: Andreas Sturmlechner <asturm@gentoo.org> AuthorDate: 2024-08-10 20:59:40 +0000 Commit: Andreas Sturmlechner <asturm@gentoo.org> CommitDate: 2024-08-11 06:53:31 +0000 kde-misc/kdiff3: Fix "unknown error" KDE-bug: https://bugs.kde.org/show_bug.cgi?id=486782 Closes: https://bugs.gentoo.org/935224 Signed-off-by: Andreas Sturmlechner <asturm@gentoo.org> .../kdiff3/files/kdiff3-1.11.2-unknown-error.patch | 132 +++++++++++++++++++++ kde-misc/kdiff3/kdiff3-1.11.2-r2.ebuild | 52 ++++++++ 2 files changed, 184 insertions(+)
