RFR: 8332697: ubsan: shenandoahSimpleBitMap.inline.hpp:68:23: runtime error: signed integer overflow: -9223372036854775808 - 1 cannot be represented in type 'long int' [v3]

[William Kemper]

> Use a template version of `right_n_bits` to use the same type for minuend and subtrahend.

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

  Fix comments

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Changes:
  - all: https://git.openjdk.org/jdk/pull/21236/files
  - new: https://git.openjdk.org/jdk/pull/21236/files/a3fb5858..97d1272b

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=21236&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=21236&range=01-02

  Stats: 3 lines in 1 file changed: 0 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/21236.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21236/head:pull/21236

PR: https://git.openjdk.org/jdk/pull/21236