Details
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Bug
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Resolution: Done
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P2: Important
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5.15.2
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Ubuntu 20.04 LTS 64 bit
Description
- Configure Qt with:
-sanitize fuzzer-no-link -sanitize undefined
- Build Qt.
- Use this Qt build to build your fuzz target for QDateTime.
- Let it run on the attached input file.
./fromstring input
You will see output like:
INFO: Seed: 1937882766 INFO: Loaded 1 modules (251117 inline 8-bit counters): 251117 [0x13a1e28, 0x13df315), INFO: Loaded 1 PC tables (251117 PCs): 251117 [0x13df318,0x17b41e8), ./fromstring: Running 1 inputs 1 time(s) each. Running: freshcorpus/039ae44bd8458eef04527ce989e0d427d7cb9248 /home/qtrob/dev/src/qt-5.15.2-base_svg/qtbase/src/corelib/time/qcalendarmath_p.h:68:13: runtime error: signed integer overflow: -9223372036854775808 - 6 cannot be represented in type 'long long' SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /home/qtrob/dev/src/qt-5.15.2-base_svg/qtbase/src/corelib/time/qcalendarmath_p.h:68:13 in /home/qtrob/dev/src/qt-5.15.2-base_svg/qtbase/src/corelib/time/qcalendarmath_p.h:71:12: runtime error: signed integer overflow: -9223372036854775808 - 9223372036854775800 cannot be represented in type 'long long' SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /home/qtrob/dev/src/qt-5.15.2-base_svg/qtbase/src/corelib/time/qcalendarmath_p.h:71:12 in Executed freshcorpus/039ae44bd8458eef04527ce989e0d427d7cb9248 in 7 ms *** *** NOTE: fuzzing was not performed, you have only *** executed the target code on a fixed set of inputs. ***