RFR: 8344026: Ubsan: prevent potential integer overflow in c1_LIRGenerator_<arch>.cpp file [v8]

[Martin Doerr]

On Wed, 11 Dec 2024 07:09:28 GMT, Emanuel Peter <epeter at openjdk.org> wrote:

> Is this just undefined behaviour, but no compiler so far actually does something unexpected?

Exactly. The compilers already seem to generate code which matches the unsigned behavior. Only UBSan checks found the issue. They run into the issue with existing tests.

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

PR Review Comment: https://git.openjdk.org/jdk/pull/22144#discussion_r1879708667