SUMMARY Using kcalc in the Numeral System Mode / Hex view and adding invalid characters into the input field leads to an unresponsive app. STEPS TO REPRODUCE 1. kcalc Numeral System Mode 2. enter invalid input like "id_aa64pfr0" 3. trying to delete that input OBSERVED RESULT kcalc becomes unresponsive EXPECTED RESULT not become unresponsive, display nan or smth SOFTWARE/OS VERSIONS Operating System: Fedora Linux 40 KDE Plasma Version: 6.2.0 KDE Frameworks Version: 6.7.0 Qt Version: 6.7.2 ADDITIONAL INFORMATION playing around with inputs, looks like "i" is enough to trigger this maybe that gets evaluated as a symbol unhelpful stack: #0 CalcEngine::insert_KNumber_Token_In_Stack_(KCalcToken const&) [clone .isra.0] (this=this@entry=0x5555557ae5d8, token=<optimized out>) at /usr/src/debug/kcalc-24.08.2-1.fc40.x86_64/kcalc_core.cpp:352 #1 0x000055555559f9f9 in CalcEngine::calculate (this=0x5555557ae5d8, tokenBuffer=..., errorIndex=@0x5555557ae4a0: 0) at /usr/src/debug/kcalc-24.08.2-1.fc40.x86_64/kcalc_core.cpp:134 #2 0x00005555555c4384 in KCalculator::commit_Input_() [clone .isra.0] (this=0x5555557ae0f0) at /usr/src/debug/kcalc-24.08.2-1.fc40.x86_64/kcalc.cpp:2391 #3 0x000055555558e2e6 in KCalculator::slotInputChanged (this=0x5555557ae0f0) at /usr/src/debug/kcalc-24.08.2-1.fc40.x86_64/kcalc.cpp:1414 #4 0x00007ffff5ffc8f2 in void doActivate<false>(QObject*, int, void**) () at /lib64/libQt6Core.so.6 #5 0x00007ffff752c9d9 in QLineEdit::textChanged(QString const&) () at /lib64/libQt6Widgets.so.6 #6 0x00007ffff5ffc8f2 in void doActivate<false>(QObject*, int, void**) () at /lib64/libQt6Core.so.6 #7 0x00007ffff7538bec in QWidgetLineControl::textChanged(QString const&) () at /lib64/libQt6Widgets.so.6 #8 0x00007ffff753be7f in QWidgetLineControl::finishChange(int, bool, bool) () at /lib64/libQt6Widgets.so.6 #9 0x00007ffff753f26a in QWidgetLineControl::processKeyEvent(QKeyEvent*) () at /lib64/libQt6Widgets.so.6 #10 0x00007ffff752c94f in QLineEdit::keyPressEvent(QKeyEvent*) () at /lib64/libQt6Widgets.so.6
can't reproduce, did you get the "Syntax error" message? What version is the issue happening?
I can reproduce this with the KCalc 24.08.2 Flatpak on Fedora 41 Beta. It doesn't have to be in Numerical System Mode, it occurs in Simple mode as well. All you have to do is type the letter 'i' and it will cause the program to become unresponsive and in need of termination. Termination produces a core dump but it doesn't seem to be helpful. STEPS TO REPRODUCE: Scenario 1: Open the KCalc program (in Simple mode), type 'i', watch as it becomes unresponsive. SOFTWARE/OS VERSIONS: Operating System: Fedora Kinoite 41 Beta KDE Plasma Version: 6.2.0 KDE Frameworks Version: 6.7.0 Qt Version: 6.7.2 ADDITIONAL INFORMATION: While journalctl doesn't give much info, there are a few entries of potential interest Oct 16 10:36:01 fedora systemd[1657]: Started app-org.kde.kcalc@9ba059c4b549431fb8e9bdec41fedfa7.service - KCalc - Scientific Calculator. Oct 16 10:36:01 fedora systemd[1657]: Started app-flatpak-org.kde.kcalc-6333.scope. Oct 16 10:36:01 fedora flatpak[6345]: Detected locale "C" with character encoding "ANSI_X3.4-1968", which is not UTF-8. Oct 16 10:36:01 fedora flatpak[6345]: Qt depends on a UTF-8 locale, and has switched to "C.UTF-8" instead. Oct 16 10:36:01 fedora flatpak[6345]: If this causes problems, reconfigure your locale. See the locale(1) manual Oct 16 10:36:01 fedora flatpak[6345]: for more information. Here is the core dump given after termination PID: 6345 (kcalc) UID: 1000 (fatomic) GID: 1000 (fatomic) Signal: 6 (ABRT) Timestamp: Wed 2024-10-16 10:36:33 +08 (9min ago) Command Line: kcalc Executable: /app/bin/kcalc Control Group: /user.slice/user-1000.slice/user@1000.service/app.slice/app-flatpak-org.kde.kcalc-6333.scope Unit: user@1000.service User Unit: app-flatpak-org.kde.kcalc-6333.scope Slice: user-1000.slice Owner UID: 1000 (fatomic) Boot ID: 069687c9f5c143d7b25d4f538df6a360 Machine ID: 2140b13e81ae4fe28398c24ac346e6c8 Hostname: fedora Storage: /var/lib/systemd/coredump/core.kcalc.1000.069687c9f5c143d7b25d4f538df6a360.6345.1729046193000000.zst (present) Size on Disk: 2.7M Message: Process 6345 (kcalc) of user 1000 dumped core. Stack trace of thread 2: #0 0x000055cb6a589bc1 n/a (/app/bin/kcalc + 0x68bc1) #1 0x000055cb6a575e04 n/a (/app/bin/kcalc + 0x54e04) #2 0x000055cb6a55175c n/a (/app/bin/kcalc + 0x3075c) #3 0x000055cb6a55582c n/a (/app/bin/kcalc + 0x3482c) #4 0x00007f611efe55fe n/a (/usr/lib/x86_64-linux-gnu/libQt6Core.so.6.7.3 + 0x1e55fe) #5 0x00007f6120532c79 n/a (/usr/lib/x86_64-linux-gnu/libQt6Widgets.so.6.7.3 + 0x332c79) #6 0x00007f611efe55fe n/a (/usr/lib/x86_64-linux-gnu/libQt6Core.so.6.7.3 + 0x1e55fe) #7 0x00007f612053ed5c n/a (/usr/lib/x86_64-linux-gnu/libQt6Widgets.so.6.7.3 + 0x33ed5c) #8 0x00007f6120541f97 n/a (/usr/lib/x86_64-linux-gnu/libQt6Widgets.so.6.7.3 + 0x341f97) #9 0x00007f6120544f05 n/a (/usr/lib/x86_64-linux-gnu/libQt6Widgets.so.6.7.3 + 0x344f05) #10 0x00007f6120532bef n/a (/usr/lib/x86_64-linux-gnu/libQt6Widgets.so.6.7.3 + 0x332bef) #11 0x00007f61203fe608 n/a (/usr/lib/x86_64-linux-gnu/libQt6Widgets.so.6.7.3 + 0x1fe608) #12 0x00007f612039e3d8 n/a (/usr/lib/x86_64-linux-gnu/libQt6Widgets.so.6.7.3 + 0x19e3d8) #13 0x00007f61203a8204 n/a (/usr/lib/x86_64-linux-gnu/libQt6Widgets.so.6.7.3 + 0x1a8204) #14 0x00007f611ef82e40 n/a (/usr/lib/x86_64-linux-gnu/libQt6Core.so.6.7.3 + 0x182e40) #15 0x00007f6120413ac0 n/a (/usr/lib/x86_64-linux-gnu/libQt6Widgets.so.6.7.3 + 0x213ac0) #16 0x00007f612039e3d8 n/a (/usr/lib/x86_64-linux-gnu/libQt6Widgets.so.6.7.3 + 0x19e3d8) #17 0x00007f611ef82e40 n/a (/usr/lib/x86_64-linux-gnu/libQt6Core.so.6.7.3 + 0x182e40) #18 0x00007f611f7e145b n/a (/usr/lib/x86_64-linux-gnu/libQt6Gui.so.6.7.3 + 0x1e145b) #19 0x00007f611f8462dc n/a (/usr/lib/x86_64-linux-gnu/libQt6Gui.so.6.7.3 + 0x2462dc) #20 0x00007f611fd31a44 n/a (/usr/lib/x86_64-linux-gnu/libQt6Gui.so.6.7.3 + 0x731a44) #21 0x00007f611e219e59 n/a (/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.7600.6 + 0x60e59) #22 0x00007f611e2772b8 n/a (/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.7600.6 + 0xbe2b8) #23 0x00007f611e217513 n/a (/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.7600.6 + 0x5e513) #24 0x00007f611f27491f n/a (/usr/lib/x86_64-linux-gnu/libQt6Core.so.6.7.3 + 0x47491f) #25 0x00007f611ef8fa4b n/a (/usr/lib/x86_64-linux-gnu/libQt6Core.so.6.7.3 + 0x18fa4b) #26 0x00007f611ef8bc4d n/a (/usr/lib/x86_64-linux-gnu/libQt6Core.so.6.7.3 + 0x18bc4d) #27 0x000055cb6a546b52 n/a (/app/bin/kcalc + 0x25b52) #28 0x00007f611e83b08a n/a (/usr/lib/x86_64-linux-gnu/libc.so.6 + 0x2808a) #29 0x00007f611e83b14b n/a (/usr/lib/x86_64-linux-gnu/libc.so.6 + 0x2814b) #30 0x000055cb6a549465 n/a (/app/bin/kcalc + 0x28465) ELF object binary architecture: AMD x86-64
(In reply to Gabriel Barrantes from comment #1) > can't reproduce, did you get the "Syntax error" message? What version is the > issue happening? I didn't get any output.. kcalc --version kcalc 24.08.2
A possibly relevant merge request was started @ https://invent.kde.org/utilities/kcalc/-/merge_requests/163
Some leftover dead code in the parser, it only happened when the first invalid character was "i". Fixed.
Git commit 8991af23ae24ccfa5cb48b4e986fc7b720402623 by Gabriel Barrantes. Committed on 19/10/2024 at 16:37. Pushed by gabrielbarrantes into branch 'master'. Remove dead code for non implemented token M +0 -4 kcalc_parser.cpp https://invent.kde.org/utilities/kcalc/-/commit/8991af23ae24ccfa5cb48b4e986fc7b720402623