[all-commits] [llvm/llvm-project] 390840: [libc++] Fix UTF-8 decoding in codecvts (#68442)

[Dimitrij Mijoski via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 390840fbdf280b68a5498af952926ffcd678954e
      https://github.com/llvm/llvm-project/commit/390840fbdf280b68a5498af952926ffcd678954e
  Author: Dimitrij Mijoski <dmjpp at hotmail.com>
  Date:   2023-11-27 (Mon, 27 Nov 2023)

  Changed paths:
    M libcxx/src/locale.cpp
    A libcxx/test/std/localization/codecvt_unicode.pass.cpp

  Log Message:
  -----------
  [libc++] Fix UTF-8 decoding in codecvts (#68442)

This patch fixes one case where the decoding member function `in()` was
returning `partial` instead of `error`. Additionally, it adds large
testsuite that tests all `codecvt` facets that were added in C++11 and
in C++20. The testsuite covers this bug.

Fixes #60177.