[all-commits] [llvm/llvm-project] 907eb1: [libc] Add getc, ungetc, fflush to enable libc++ i...

[Volodymyr Turanskyy via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 907eb11cc128630c52cd2191b925873b6ee56d6e
      https://github.com/llvm/llvm-project/commit/907eb11cc128630c52cd2191b925873b6ee56d6e
  Author: Volodymyr Turanskyy <vturanskyy at gmail.com>
  Date:   2026-02-12 (Thu, 12 Feb 2026)

  Changed paths:
    M libc/config/baremetal/aarch64/entrypoints.txt
    M libc/config/baremetal/arm/entrypoints.txt
    M libc/src/stdio/baremetal/CMakeLists.txt
    A libc/src/stdio/baremetal/fflush.cpp
    A libc/src/stdio/baremetal/file_internal.cpp
    M libc/src/stdio/baremetal/file_internal.h
    M libc/src/stdio/baremetal/getc.cpp
    A libc/src/stdio/baremetal/ungetc.cpp
    M libc/src/stdio/baremetal/vfscanf_internal.h

  Log Message:
  -----------
  [libc] Add getc, ungetc, fflush to enable libc++ iostream on baremetal (#175530)

After https://github.com/llvm/llvm-project/pull/168931 landed getc,
ungetc and fflush are still missing at link time while trying to make
libc++ std::cout work with LLVM libc on baremetal.

ungetc implementation is very minimal only to cover the current standard
streams implementation from the patch above.



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