[all-commits] [llvm/llvm-project] 7583c7: [libc++][format] Fixes an off by one error.

[Mark de Wever via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 7583c73bc4faf2b37f6c75ec64eddaa99f058b65
      https://github.com/llvm/llvm-project/commit/7583c73bc4faf2b37f6c75ec64eddaa99f058b65
  Author: Mark de Wever <koraq at xs4all.nl>
  Date:   2023-07-17 (Mon, 17 Jul 2023)

  Changed paths:
    M libcxx/include/__format/buffer.h
    M libcxx/test/std/utilities/format/format.functions/format_tests.h

  Log Message:
  -----------
  [libc++][format] Fixes an off by one error.

The post-condition on the functions is that the buffer is not full.
This post-conditon is used as pre-condition of the push_back function.
When a copy, fill, of transform function exactly fit in the buffer this
post-condition was validated.

Reviewed By: #libc, ldionne

Differential Revision: https://reviews.llvm.org/D155397