Build Tricycle memory safety checker foundation#408
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Tricycle is an opt-in static analyzer that proves memory safety properties for Hemlock programs. It provides: - Double-free detection (TRIC001) - Use-after-free detection (TRIC002) - Use-after-move detection (TRIC003) - Memory leak detection (TRIC004) - Async lifetime safety (TRIC006) - Ownership tracking Features: - CLI tool: `tricycle check program.hml` - Supports --strict, --all, --json output modes - Integrates with existing type checker for type-aware analysis - Proper diagnostic formatting with related locations and hints New files: - include/tricycle/tricycle.h - Public API and data structures - src/backends/tricycle/tricycle.c - Context and diagnostics - src/backends/tricycle/ownership.c - Ownership analysis engine - src/backends/tricycle/main.c - CLI entry point - tests/tricycle/ - Test suite with 7 ownership tests Build: `make tricycle` Test: `make test-tricycle`
The CheckedType returned by type_check_infer_expr was not being freed, causing a 96-byte leak per call. Now properly call checked_type_free() after checking the type kind.
This allows tricycle to be built with ASAN and other linker flags passed via EXTRA_LDFLAGS, consistent with other build targets.
Tricycle test files contain intentional memory bugs (double-free, use-after-free, etc.) that are meant to be analyzed by the tricycle static analyzer, not executed by the hemlock interpreter. Changes: - Exclude tests/tricycle/ from the main test runner (run_tests.sh) - Fix tricycle test runner by removing 'set -e' which caused premature exit due to (( PASSED++ )) returning 1 when PASSED=0
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Tricycle is an opt-in static analyzer that proves memory safety properties for Hemlock programs. It provides:
Features:
tricycle check program.hmlNew files:
Build:
make tricycleTest:
make test-tricycle