| Summary: |
KCalc crashes (SIGABRT) when attempting to handle or display calculations involving extremely large numbers (high power/exponentiation). The crash occurs in the GMP library (libgmp) during a string conversion or large-scale multiplication process. +3 |
| Product: |
[Applications] kcalc
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Reporter: |
Hamza Mahmoud Ahmed <hamza2002gaming> |
| Component: |
general | Assignee: |
Evan Teran <evan.teran> |
| Status: |
RESOLVED
UNMAINTAINED
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| Severity: |
crash
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CC: |
gabriel.barrantes.dev, kdedev
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| Priority: |
NOR
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| Version First Reported In: |
24.12.1 | |
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| Target Milestone: |
--- | |
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| Platform: |
Debian stable | |
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| OS: |
Linux | |
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Latest Commit:
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Version Fixed/Implemented In:
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Sentry Crash Report:
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| Attachments: |
KDE Crash Bug
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Created attachment 188605 [details] KDE Crash Bug SUMMARY : KCalc crashes (SIGABRT) when attempting to handle or display calculations involving extremely large numbers (high power/exponentiation). The crash occurs in the GMP library (libgmp) during a string conversion or large-scale multiplication process. +3 STEPS TO REPRODUCE 1. Open KCalc 2. Enter a very large number (e.g., 999999999999999999999). 3. Raise it to a huge power (e.g., press x^y and enter 99999999999999). 4. Press equals (=) or try to process the calculation. OBSERVED RESULT The application freezes momentarily and then crashes immediately. The crash handler (DrKonqi) is triggered, showing a backtrace involving __gmpn_mul_fft and __gmpz_get_str. EXPECTED RESULT The application should either display the result using scientific notation, show an "Overflow" error, or cap the calculation to prevent a memory-related crash. SOFTWARE/OS VERSIONS Operating System: Kali GNU/Linux 2025.1 KDE Plasma Version: 6.3.0 KDE Frameworks Version: 6.11.0 Qt Version: 6.7.2 Kernel Version: 6.12.13-amd64 (64-bit) Graphics Platform: Wayland Processors: 8 × Intel® Core™ i5-8365U CPU @ 1.60GHz Memory: 7.5 GiB of RAM Graphics Processor: Mesa Intel® UHD Graphics 620 Manufacturer: Dell Inc. Product Name: Latitude 5400 ADDITIONAL INFORMATION The crash log indicates that the failure happens in the GNU Multiple Precision Arithmetic Library (libgmp.so.10) while the application is trying to convert a very large integer to a string for display in the UI. This suggests an issue with how KCalc handles memory allocation or buffer sizes for massive numeric outputs.