fix: release expression token storage

2026-09-22 10:24:43 +00:00
parent 728292c5f6
commit d60672f575
4 changed files with 77 additions and 2 deletions
@@ -0,0 +1,60 @@
+#!/usr/bin/env python3
+"""Focused regression check for expression-token cleanup under LeakSanitizer."""
+from pathlib import Path
+import os
+import subprocess
+import sys
+import tempfile
+
+ROOT = Path(__file__).resolve().parent.parent
+
+
+def main() -> int:
+    if os.name == "nt":
+        print("SKIP: LeakSanitizer check is POSIX-only")
+        return 0
+    with tempfile.TemporaryDirectory(prefix="claro-memory-") as tmp:
+        tmp_path = Path(tmp)
+        binary = tmp_path / "claro-lsan"
+        script = tmp_path / "overwrite.claro"
+        script.write_text(
+            'SET value TO "first"\n'
+            'SET value TO "second"\n'
+            'SAY value\n',
+            encoding="utf-8",
+        )
+        build = subprocess.run(
+            [
+                "gcc", "-std=c99", "-O0", "-g",
+                "-fsanitize=address,undefined",
+                "src/claro.c", "-o", str(binary), "-lm",
+            ], cwd=ROOT, text=True, capture_output=True,
+        )
+        if build.returncode:
+            print(build.stdout, end="")
+            print(build.stderr, end="", file=sys.stderr)
+            return build.returncode
+        run = subprocess.run(
+            [str(binary), str(script)], cwd=ROOT, text=True,
+            capture_output=True,
+            env={**os.environ, "ASAN_OPTIONS": "detect_leaks=1"},
+        )
+        if "toks_add" in run.stderr or "tokenize" in run.stderr:
+            print("FAIL: expression token allocations still leak")
+            print(run.stderr, end="", file=sys.stderr)
+            return 1
+        functional = subprocess.run(
+            [str(binary), str(script)], cwd=ROOT, text=True,
+            capture_output=True,
+            env={**os.environ, "ASAN_OPTIONS": "detect_leaks=0"},
+        )
+        if functional.returncode or "second\n" not in functional.stdout:
+            print("FAIL: overwrite cleanup probe produced the wrong output")
+            print(functional.stdout, end="", file=sys.stderr)
+            return 1
+        print("PASS: expression token allocations are released")
+        return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())