Fix: depth first visit problem#15
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@MouJieQin yes, that's a serious bug... Thank you for fixing it! |
yhirose
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Jun 9, 2026
- EditDistanceTest.Visits_sibling_arc_after_dead_end: covers the depth-first visit early-break bug fixed in #15; minimal repro is {"rangy","rani"} with query "ani" at max_edits=1, where the buggy code returned 0 results. - MapTest.Large_output_value_round_trip: covers the vb_decode_value_reverse cast bug fixed in #15; an output value >2^28 was corrupted without the static_cast to the target type before shifting. - hardened CI job: adds a Debug build with -D_GLIBCXX_ASSERTIONS and -D_LIBCPP_HARDENING_MODE=DEBUG on ubuntu and macos. This turns the string_view out-of-bounds reads in cost_insert/cost_delete/common_string (fixed in #16) into hard test failures; they silently pass in Release builds and even under ASan/UBSan.
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Thanks for your code, it helps me a lot. It seems there is a problem in depth first visit logic.
The original fuzzy test:
The fuzzy test after my fix: