Previous behavior: src/mcp/mcp.c:3895 called cbm_git_context_resolve for the single branch field. Attached repositories could execute seven Git commands per project, and a rejected status-based replacement took 3,380.410 ms for the isolated 50-project page.
Add src/git/git_context.c:115 resolve_current_branch as the single attached/detached/unborn implementation shared by cbm_git_context_resolve and cbm_git_current_branch. cbm_git_run_first_line_buf drains stdout and reaps symbolic-ref once; cbm_pclose_exit_code normalizes POSIX wait status and Windows GetExitCodeProcess results. Exit 0 returns attached/unborn names, exit 1 returns DETACHED, and non-Git errors remain absent.
Route CBM_ONLY_SUITE=git_context in tests/test_main.c:386 so focused runs execute four tests instead of traversing high-memory fixtures. tests/test_git_context.c:252 covers attached, detached, unborn, non-Git, full-context parity, heap cleanup, and portable command setup; tests/test_security.c:621 covers normalized exit 7.
Verification: Git context ASAN/UBSan 4/4; normalized-exit canary 1/1; MCP ASAN/UBSan 224/224; scripts/check-source-safety.sh passed; staged diff check passed. The -O2 binary returned the isolated default page in 773.848 ms and explicit full inventory in 5,023.220 ms, preserved 41/53 branch fields including the unborn main branch, and reaped both server processes and all reader threads.
Signed-off-by: Andrew Hundt <ATHundt@gmail.com>
On Windows every git_context test SKIP_PLATFORMs, leaving git_run/make_git_repo
as unused static functions -> -Wunused-function under -Werror failed the Windows
build. Guard the two helpers (only called from the non-Windows test bodies) so
the file compiles clean on Windows while the tests still run on Linux/macOS.
Signed-off-by: Martin Vogel <martin.vogel.tech@gmail.com>
detect_changes returned an empty impacted_symbols set for projects indexed
inside a git worktree or from a repo subdirectory (#659): canonical_root was
computed wrong. `git rev-parse --git-common-dir` emits a path relative to the
directory passed via -C (input_path), NOT to worktree_root, and the "/.git"
suffix was stripped textually without resolving ".." components. So e.g.
"../.git" joined against worktree_root, or "/ws/scripts/../.git" strip, left an
unresolved ".." and never matched the project's stored root path.
Fix (src/git/git_context.c): join the relative --git-common-dir against
input_path (the -C dir) instead of worktree_root, and realpath()/_fullpath()-
normalize the result BEFORE stripping "/.git" (the .git dir always exists for a
valid repo, so resolution succeeds). This is consistent with the existing
realpath'd root_path used for prefix matching (mcp.c).
Reproduce-first: tests/test_git_context.c. The subdirectory case is the genuine
guard — a repo indexed from a subdir yields a *relative* --git-common-dir, so the
unfixed code leaves an un-normalized "<root>/subdir/.." (verified RED; GREEN after
the realpath fix). The linked-worktree case is a supporting invariant, not the
#659 reproducer: git that emits an *absolute* worktree --git-common-dir (e.g.
2.48.x) doesn't manifest the bug, so it passes either way; it still enforces the
worktree->main-root invariant. All three git-based tests SKIP_PLATFORM on Windows
(the CI shell there cannot init a repo via system()).
Distilled from #672 (thanks @anivaryam); that PR's production fix is taken
verbatim. Its repo_root/subdir tests ran git unconditionally and failed the
Windows CI leg ("failed to init git repo"); here all three git-based tests are
Windows-skipped so ci-ok is green cross-platform. Supersedes #696, which only
realpath'd after the strip without changing the join base and so still yielded
the workspace parent for the subdirectory case.
Closes#659
Signed-off-by: Martin Vogel <martin.vogel.tech@gmail.com>
Co-Authored-By: anivaryam <anivaryam.dev@gmail.com>
Andrew Hundt