Orkuncakilkaya
498593311f
Instrument each emitted statement with a per-source-line hit counter, gated behind a new --coverage flag (default off) so ordinary builds — and the compiler's own self-compile — stay byte-identical and the C-free bootstrap fixpoint is untouched. A static line table plus a parallel hit-counter array are dumped at exit through an atexit hook to $LUDIC_COVERAGE (default ludic.cov) as a `FILE <name>` header and `<line> <hits>` rows. bin/x test --coverage compiles the test specs with instrumentation, runs them into per-file dumps, and aggregates a clean per-file line-coverage report that names the unreached lines. Adds examples/library/coverage.ludic (a spec whose tests deliberately miss one branch) and docs. Closes the last open acceptance item of the testing framework (#12). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
3 lines
764 B
Markdown
3 lines
764 B
Markdown
bump: minor
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type: feat
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Line coverage for the testing framework — compile with `--coverage` and the compiler instruments each statement with a per-source-line hit counter, dumped at exit (via an `atexit` hook) to the file named by `$LUDIC_COVERAGE` (default `ludic.cov`) as a `FILE <name>` header plus one `<line> <hits>` row per instrumented line. The instrumentation is flag-gated and additive, so an ordinary build — and the compiler's own self-compile — stays byte-identical and the C-free bootstrap fixpoint is untouched. `bin/x test --coverage` compiles the test specs this way, runs them, and aggregates the dumps into a per-file line-coverage report that names the unreached lines. Closes the last open acceptance item of the testing framework (#12).
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