carbon-language/carbon-lang

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ATHARVAandDana Jansens 804359dce0 Fix crash when lowering Carbon derived class with C++ virtual base class (#7745 )

If a Carbon class overrides virtual functions from a C++ base class but
is never referenced from C++, it is never exported to Clang. During
lowering, `BuildVtable` then fails to find a `CXXRecordDecl` and crashes
when attempting to get the vtable from Clang's code generator.

Ensure dynamic classes with foreign vtables are exported to Clang when
completing the class definition in `CheckCompleteClassType`, and look up
`first_decl_id()` in `BuildVtable`.

Fixes #7721

---------

Co-authored-by: Dana Jansens <danakj@orodu.net>

2026-09-18 18:08:53 +00:00

..

Remove redundant use of typename (#7751 )

2026-09-11 00:22:27 +00:00

precompile and cache Carbon prelude (#7432 )

2026-07-16 18:02:14 +00:00

Fix crash when lowering Carbon derived class with C++ virtual base class (#7745 )

2026-09-18 18:08:53 +00:00

Error when passing multiple input files with --output (#6896 )

2026-03-13 16:07:12 +00:00

Use non-canonical instructions in default values. (#7737 )

2026-09-17 22:04:43 +00:00

Add a design for rendering diagnostics on a terminal (#7668 )

2026-09-11 07:15:40 +00:00

Canonicalize generated functions for Core witnesses (#7729 )

2026-09-15 16:02:13 +00:00

Update Carbon::Format to produce semi-reasonable output. (#7687 )

2026-09-08 16:20:47 +00:00

Disable RTTI in the toolchain (#7552 )

2026-07-31 20:09:48 +00:00

language_server

Start to preserve type sugar in diagnostics. (#7768 )

2026-09-15 23:11:58 +00:00

Add benchmark for missing bracket fixing and optimize various parts of the algorithm. (#7655 )

2026-09-15 23:22:29 +00:00

Fix crash when lowering Carbon derived class with C++ virtual base class (#7745 )

2026-09-18 18:08:53 +00:00

fix malformed parse tree for invalid let struct pattern (#7782 )

2026-09-15 23:10:17 +00:00

move carbon_prelude to carbon_runtimes.bzl (#7539 )

2026-07-20 20:38:17 +00:00

Use non-canonical instructions in default values. (#7737 )

2026-09-17 22:04:43 +00:00

Modularize driver subcommands and prune unused dependencies (#7658 )

2026-08-20 13:32:46 +00:00

precompile and cache Carbon prelude (#7432 )

2026-07-16 18:02:14 +00:00

autoupdate_testdata.py

Add --build-mode to autoupdate script (#7809 )

2026-09-18 15:15:26 +00:00

BUILD

Switch to a Bazel-based runtimes build, and add bootstrapping (#6989 )

2026-03-31 23:38:03 +00:00

README.md

Move toolchain architecture to markdown (#4242 )

2024-09-03 23:13:49 +00:00

run_tool.bzl

Replace #4505 with a different set of workarounds (#4527 )

2024-12-20 00:33:29 +00:00

README.md

Toolchain

See docs.