Richard SmithandGeoff Romer ce50f181f1 Add an interface for initialization of vars without an explicit initializer (#6934) ...

When a `var` is not explicitly given an initializer, initialize it in
one of two ways:

* If its type implements the new interface `Core.Default`, call
`Core.Default.Op` to initialize it.
* Otherwise, if its type implements `UnformedInit`, leave it in an
unformed state. For now, this is always an uninitialized state, but that
will change in the future.
* If neither of those apply, the `var` declaration is ill-formed.

This is a step towards implementing leads decision #6739 and proposals
#257 and #5913.

Assisted-by: Gemini 3.1 Pro via Antigravity

---------

Co-authored-by: Geoff Romer <gromer@google.com>

2026-03-19 23:46:06 +00:00

..

advent2024

Add an interface for initialization of vars without an explicit initializer (#6934)

2026-03-19 23:46:06 +00:00

bazel

pre-commit autoupdate (#6845)

2026-03-09 15:49:11 +00:00

interop/cpp

Add an interface for initialization of vars without an explicit initializer (#6934)

2026-03-19 23:46:06 +00:00

re2_playground

Add line editor to RE2 example. (#6337)

2025-11-10 23:53:23 +00:00

bazel_test_runner.py

Add transient error retries to bazel integration tests (#6796)

2026-02-26 17:36:51 +00:00

BUILD

Test that the built toolchain works with the example Bazel project (#6653)

2026-01-29 02:14:17 +00:00

hello_world.carbon

Add Core.PrintStr and a "hello world" example (#6493)

2025-12-12 20:07:05 +00:00

sieve.carbon

Add an interface for initialization of vars without an explicit initializer (#6934)

2026-03-19 23:46:06 +00:00