[jdk23u] RFR: 8332697: ubsan: shenandoahSimpleBitMap.inline.hpp:68:23: runtime error: signed integer overflow: -9223372036854775808 - 1 cannot be represented in type 'long int' [v2]

[William Kemper]

> Clean backport. Fixes ubsan error in Shenandoah.

William Kemper has updated the pull request incrementally with one additional commit since the last revision:

  8341668: Shenandoah: assert(tail_bits < (idx_t)BitsPerWord) failed: precondition
  
  Reviewed-by: ysr

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Changes:
  - all: https://git.openjdk.org/jdk23u/pull/135/files
  - new: https://git.openjdk.org/jdk23u/pull/135/files/cdfe8356..826b0958

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk23u&pr=135&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk23u&pr=135&range=00-01

  Stats: 3 lines in 2 files changed: 2 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk23u/pull/135.diff
  Fetch: git fetch https://git.openjdk.org/jdk23u.git pull/135/head:pull/135

PR: https://git.openjdk.org/jdk23u/pull/135