[all-commits] [llvm/llvm-project] 766bf1: [libc++][chrono] Fixes year_month year wrapping. (...

[Mark de Wever via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 766bf140ffd6ce420426b80aa2cce0cb0d25ab7d
      https://github.com/llvm/llvm-project/commit/766bf140ffd6ce420426b80aa2cce0cb0d25ab7d
  Author: Mark de Wever <koraq at xs4all.nl>
  Date:   2023-12-12 (Tue, 12 Dec 2023)

  Changed paths:
    M libcxx/include/__chrono/year_month.h
    M libcxx/test/std/time/time.cal/time.cal.ym/time.cal.ym.members/plus_minus_equal_month.pass.cpp
    M libcxx/test/std/time/time.cal/time.cal.ym/time.cal.ym.nonmembers/minus.pass.cpp
    M libcxx/test/std/time/time.cal/time.cal.ym/time.cal.ym.nonmembers/plus.pass.cpp
    M libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.members/plus_minus_equal_month.pass.cpp
    M libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.nonmembers/plus.pass.cpp
    M libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.members/plus_minus_equal_month.pass.cpp
    M libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.nonmembers/minus.pass.cpp
    M libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.nonmembers/plus.pass.cpp
    M libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/plus_minus_equal_month.pass.cpp
    M libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.nonmembers/minus.pass.cpp
    M libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.nonmembers/plus.pass.cpp
    M libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.members/plus_minus_equal_month.pass.cpp
    M libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.nonmembers/minus.pass.cpp
    M libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.nonmembers/plus.pass.cpp

  Log Message:
  -----------
  [libc++][chrono] Fixes year_month year wrapping. (#74938)

Adding months to a year_month should wrap the year when the month
becomes greater than twelve or less than one.

This fixes the issue for year_month. Other classes with a year and month
do not have this issue. This has been verified and tests are added to
avoid possible regressions.

Also fixes some variable copy-paste errors in the tests.

Fixes https://github.com/llvm/llvm-project/issues/73162