port: advance VC6 typeobject frontier and preserve regression coverage

2026-10-26 18:09:33 +00:00
parent 35caf1a558
commit 5ab291a68c
162 changed files with 15675 additions and 85 deletions
@@ -0,0 +1,39 @@
+#!/usr/bin/env python3
+"""Check tracemalloc's positional initializer against its header definition."""
+
+import re
+import sys
+from pathlib import Path
+
+source = Path(sys.argv[1]).read_text()
+header = Path(sys.argv[2]).read_text()
+header = re.sub(r"/\*.*?\*/", "", header, flags=re.S)
+layout = re.search(r"struct _PyTraceMalloc_Config \{(.*?)\n\};", header, re.S)
+assert layout, "_PyTraceMalloc_Config definition not found"
+fields = re.findall(r"\b(\w+)\s*;", layout.group(1))
+assert fields == ["initialized", "tracing", "max_nframe"], (
+    "expected initialized, tracing, max_nframe field order"
+)
+macro = re.search(
+    r"#define _PyTraceMalloc_Config_INIT\s*\\\s*\{(.*?)\}", header, re.S
+)
+assert macro, "_PyTraceMalloc_Config_INIT definition not found"
+defaults = re.findall(r"\.(\w+)\s*=\s*(\w+)", macro.group(1))
+assert defaults == list(zip(fields, ["TRACEMALLOC_NOT_INITIALIZED", "0", "1"])), (
+    "expected uninitialized, tracing disabled, and one traceback frame defaults"
+)
+initializer = re.search(
+    r"struct _PyTraceMalloc_Config _Py_tracemalloc_config\s*=\s*(.*?);",
+    source,
+    re.S,
+)
+assert initializer, "_Py_tracemalloc_config initializer not found"
+body = re.sub(r"/\*.*?\*/", "", initializer.group(1), flags=re.S).strip()
+assert body.startswith("{") and body.endswith("}") and not re.search(
+    r"\.\s*\w+\s*=", body
+), "_Py_tracemalloc_config must use a VC6-compatible positional initializer"
+values = [value.strip() for value in body[1:-1].strip().rstrip(",").split(",")]
+assert values == [value for field, value in defaults], (
+    "positional initializer must preserve every header default in field order"
+)
+print("obmalloc tracemalloc C89 positional initializer: PASS (initialized=TRACEMALLOC_NOT_INITIALIZED, tracing=0, max_nframe=1)")