RFR: 8365229: ARM32: c2i_no_clinit_check_entry assert failed after JDK-8364269 [v3]

[Aleksey Shipilev]

On Wed, 13 Aug 2025 10:48:31 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

>> src/hotspot/share/runtime/sharedRuntime.cpp line 2850:
>> 
>>> 2848:   address i2c_entry = handler->get_i2c_entry();
>>> 2849:   entry_offset[0] = 0; // i2c_entry offset
>>> 2850:   entry_offset[1] = (handler->get_c2i_entry() != nullptr) ?
>> 
>> Should we handle the Zero case? Something like:
>> 
>>   entry_offset[1] = (handler->get_c2i_entry() != nullptr ZERO_ONLY(&& false)) ?
>>                     (handler->get_c2i_entry() - i2c_entry) : -1;
>>   entry_offset[2] = (handler->get_c2i_unverified_entry() != nullptr ZERO_ONLY(&& false)) ?
>>                     (handler->get_c2i_unverified_entry() - i2c_entry) : -1;
>> 
>> With Zero, `handler->get_i2c_entry()`, `handler->get_c2i_entry()` and `handler->get_c2i_unverified_entry()` are same and not nullptr. The build of Zero can trigger the problem.
>
> Ah, Zero is still broken, let me fix it...

See new commit. Zero build now passes, I am running bootcycle-images now.

-------------

PR Review Comment: https://git.openjdk.org/jdk/pull/26746#discussion_r2273027343