Nightly build 2025.08.29

What's Changed

Toolchain and implementation changes 🛠️

• Fix a use of an imported InstId used where a local InstId is required by @dwblaikie in #5998
• Add support for unsafe as operator to the toolchain. by @zygoloid in #5993
• C++ Interop: Add support for char by @bricknerb in #5988

Documentation changes 📝

• Fix a typo in README.md by @pascal754 in #5994

New Contributors

• @pascal754 made their first contribution in #5994

Full Changelog: v0.0.0-0.nightly.2025.08.27...v0.0.0-0.nightly.2025.08.29

Nightly build 2025.08.28

What's Changed

Toolchain and implementation changes 🛠️

• Add return value support to C++ thunks. by @zygoloid in #5976
• Support for building thunks for C++ constructors. by @zygoloid in #5977
• Widen integer loads and stores to a multiple of 8 bits. by @zygoloid in #5986
• Update comment to not be specific for signed integers by @bricknerb in #5987
• Support for importing C++ enum types. by @zygoloid in #5978
• Interop: map C++ std::string_view into Carbon str when importing. by @zygoloid in #5985

Full Changelog: v0.0.0-0.nightly.2025.08.26...v0.0.0-0.nightly.2025.08.28

Nightly build 2025.08.27

What's Changed

Toolchain and implementation changes 🛠️

• Add return value support to C++ thunks. by @zygoloid in #5976
• Support for building thunks for C++ constructors. by @zygoloid in #5977
• Widen integer loads and stores to a multiple of 8 bits. by @zygoloid in #5986
• Update comment to not be specific for signed integers by @bricknerb in #5987
• Support for importing C++ enum types. by @zygoloid in #5978
• Interop: map C++ std::string_view into Carbon str when importing. by @zygoloid in #5985

Full Changelog: v0.0.0-0.nightly.2025.08.26...v0.0.0-0.nightly.2025.08.27

Nightly build 2025.08.26

What's Changed

Toolchain and implementation changes 🛠️

• Rework the IsSuccess matcher to be fully polymorphic by @chandlerc in #5981
• Use direct passing for 32- and 64-bit unsigned integers. by @zygoloid in #5980
• Support for building thunks for C++ methods. by @zygoloid in #5972
• Attempt to complete the source type in a conversion. by @zygoloid in #5984

Full Changelog: v0.0.0-0.nightly.2025.08.23...v0.0.0-0.nightly.2025.08.26

Nightly build 2025.08.25

What's Changed

Toolchain and implementation changes 🛠️

• Start building Clang runtimes on-demand by @chandlerc in #5338

Full Changelog: v0.0.0-0.nightly.2025.08.22...v0.0.0-0.nightly.2025.08.25

Nightly build 2025.08.24

What's Changed

Toolchain and implementation changes 🛠️

• Start building Clang runtimes on-demand by @chandlerc in #5338

Full Changelog: v0.0.0-0.nightly.2025.08.22...v0.0.0-0.nightly.2025.08.24

Nightly build 2025.08.23

What's Changed

Toolchain and implementation changes 🛠️

• Start building Clang runtimes on-demand by @chandlerc in #5338

Full Changelog: v0.0.0-0.nightly.2025.08.22...v0.0.0-0.nightly.2025.08.23

Nightly build 2025.08.22

What's Changed

Toolchain and implementation changes 🛠️

• Tweak the name for the function that diagnoses when fuzzing external libraries by @chandlerc in #5974
• Make use of new ArrayRef::consume_* functions. by @zygoloid in #5975

Full Changelog: v0.0.0-0.nightly.2025.08.21...v0.0.0-0.nightly.2025.08.22

Nightly build 2025.08.21

What's Changed

Proposals accepted and merged 📜

• Updating Carbon's safety strategy by @chandlerc in #5914

Toolchain and implementation changes 🛠️

• Add some more operations to the filesystem library by @chandlerc in #5968
• Support importing nested types from C++. by @zygoloid in #5955
• Remove now-unused StringType instruction. by @zygoloid in #5964
• Avoid non-UTF8-encoded test files. by @zygoloid in #5965
• Support conversion from T* to const T*. by @zygoloid in #5971

Full Changelog: v0.0.0-0.nightly.2025.08.20...v0.0.0-0.nightly.2025.08.21

Nightly build 2025.08.20

What's Changed

Toolchain and implementation changes 🛠️

• Add basic support for strings to core, check, and lower. by @zygoloid in #5963

Full Changelog: v0.0.0-0.nightly.2025.08.16...v0.0.0-0.nightly.2025.08.20