[all-commits] [llvm/llvm-project] 784b74: [libc] Fix off by one error in strftime (#165711)

[Marcell Leleszi via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 784b74c6ef8a7f6ffaa7ab250eb35696dd833426
      https://github.com/llvm/llvm-project/commit/784b74c6ef8a7f6ffaa7ab250eb35696dd833426
  Author: Marcell Leleszi <59964679+mleleszi at users.noreply.github.com>
  Date:   2025-10-30 (Thu, 30 Oct 2025)

  Changed paths:
    M libc/src/time/strftime.cpp
    M libc/src/time/strftime_l.cpp
    M libc/test/src/time/strftime_test.cpp

  Log Message:
  -----------
  [libc] Fix off by one error in strftime (#165711)

This patch fixes a bug in strftime's return value when the formatted
output exactly fills the buffer, not including the null terminator. The
previous check failed to account for the null terminator in this case,
incorrectly returning the written count instead of 0.



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