RFR: 8352420: [ubsan] codeBuffer.cpp:984:27: runtime error: applying non-zero offset 18446744073709486080 to null pointer

[Vladimir Kozlov]

On Wed, 19 Mar 2025 15:43:54 GMT, Doug Simon <dnsimon at openjdk.org> wrote:

> This PR addresses undefined behavior in CodeBuffer by making `verify_section_allocation` return early for a partially initialized CodeBuffer.

src/hotspot/share/asm/codeBuffer.hpp line 550:

> 548:     initialize_misc(name);
> 549:     _total_start = 0;
> 550:     _total_size  = 0;

May be we should move this initialization from `initialize()` to `initialize_misc()` so you don't need to do this here.

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PR Review Comment: https://git.openjdk.org/jdk/pull/24118#discussion_r2006175075