Comments (4)
RobinMorisset
commented on August 30, 2024
2
@zuiderkwast I wrote a fuzzer for Erlang: https://github.com/WhatsApp/erlfuzz.
See https://erlangforums.com/t/open-sourcing-erlfuzz/2562 for a longer introduction, and some examples of the kind of bugs it has been finding in tools like erlc. It found these 4 issues (and half a dozen more) in roughly 30s when I started running it on gradualizer yesterday (I'll try to commit the script to do so today).
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RobinMorisset
commented on August 30, 2024
2
The script has been committed: WhatsApp/erlfuzz@1f770e4
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erszcz
commented on August 30, 2024
1
Thanks, @RobinMorisset, indeed it's a good point that Gradualizer should not crash in such cases. Thanks for all the raised issues 👍
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zuiderkwast
commented on August 30, 2024
@RobinMorisset how did you find these issues? Property based tests or something more fancy? Just curious.
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Related Issues (20)
- Crash with `Uncaught error: {case_clause, ..` in `typechecker:do_type_check_expr/2`
- Crash with Uncaught error: {badkey, ...} HOT 1
- No clause for gradualizer_lib:pick_value(module()) HOT 2
- No clause of gradualizer_lib:pick_value(any()) HOT 2
- Support the new dynamic() type
- An invalid utf32 value can crash eval_bits:eval_exp_field/6
- Crash in gradualizer_fmt:format_type_error: no function_clause_matching
- Crash in typechecker:do_type_check_expr_in/3: bad_key in map_get/2
- Invalid polymorphic code accepted HOT 2
- Support old-style 'catch' keyword HOT 5
- Wrong type in receive...after Timeout
- `binary_to_atom/1` breaks compatibility below OTP 23 HOT 4
- Solving local constraints at each function call to a polymorphic function HOT 6
- support for OTP 26 map comprehensions
- Wrong type location reported?
- Gradualizer can't tell that `m` and `f` don't exist in `erlang:apply(m, f, [some, args])` HOT 2
- Exhaustivity checking issue
- Type representation HOT 2
- How to mention Gradualizer in a paper? HOT 2
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