RFR: 8346888: [ubsan] block.cpp:1617:30: runtime error: 9.97582e+36 is outside the range of representable values of type 'int' [v2]

[Matthias Baesken]

On Thu, 27 Mar 2025 09:27:58 GMT, Matthias Baesken <mbaesken at openjdk.org> wrote:

>> When running jtreg tests on macOS aarch64 with ubsan - enabled binaries, in the test
>> java/foreign/TestHandshake
>> this error/warning is reported :
>>  
>> jdk/src/hotspot/share/opto/block.cpp:1617:30: runtime error: 9.97582e+36 is outside the range of representable values of type 'int'
>> UndefinedBehaviorSanitizer:DEADLYSIGNAL
>> UndefinedBehaviorSanitizer: nested bug in the same thread, aborting.
>>  
>> Seems it happens in this calculation (float value does not fit into an int) : int to_pct = (int) ((100 * freq) / target->_freq);
>
> Matthias Baesken has updated the pull request incrementally with one additional commit since the last revision:
> 
>   calculate from_pct like we did before, clamp to_pct

Thanks for the reviews !

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PR Comment: https://git.openjdk.org/jdk/pull/23962#issuecomment-2760520418