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 +1,42 @@
+#!/usr/bin/env python3
+"""Guard _PyMem_GetCurrentAllocatorName C89 local placement and comparisons."""
+
+import re
+import sys
+from pathlib import Path
+
+source = Path(sys.argv[1]).read_text()
+match = re.search(
+    r"_PyMem_GetCurrentAllocatorName\s*\([^)]*\)\s*\{(?P<body>.*?)\n\}",
+    source,
+    re.S,
+)
+assert match, "_PyMem_GetCurrentAllocatorName definition not found"
+body = match.group("body")
+
+expected_declarations = [
+    "PyMemAllocatorEx malloc_alloc = MALLOC_ALLOC;",
+    "PyMemAllocatorEx pymalloc = PYMALLOC_ALLOC;",
+    "PyMemAllocatorEx dbg_raw = PYDBGRAW_ALLOC;",
+    "PyMemAllocatorEx dbg_mem = PYDBGMEM_ALLOC;",
+    "PyMemAllocatorEx dbg_obj = PYDBGOBJ_ALLOC;",
+]
+positions = [body.find(declaration) for declaration in expected_declarations]
+assert all(position >= 0 for position in positions), "allocator snapshot declarations must remain present"
+first_check = body.find("if (pymemallocator_eq")
+assert first_check >= 0 and positions == sorted(positions) and positions[-1] < first_check, (
+    "all allocator snapshots must be initialized before the first statement for C89"
+)
+assert body.count("if (pymemallocator_eq(&_PyMem_Raw, &malloc_alloc)") == 2, (
+    "preserve the malloc and pymalloc base-allocator comparisons"
+)
+assert body.count("if (pymemallocator_eq(&_PyMem_Debug.raw.alloc, &malloc_alloc) &&") == 2, (
+    "preserve malloc_debug and pymalloc_debug allocator comparisons"
+)
+assert "pymemallocator_eq(&_PyMem_Raw, &dbg_raw)" in body
+assert "pymemallocator_eq(&_PyMem, &dbg_mem)" in body
+assert "pymemallocator_eq(&_PyObject, &dbg_obj)" in body
+assert body.index("/* Debug hooks installed */") < body.index('return "malloc_debug";')
+assert body.index('return "malloc_debug";') < body.index('return "pymalloc_debug";')
+assert body.index('return "pymalloc_debug";') < body.index("return NULL;")
+print("obmalloc allocator-name C89 declarations and allocator classification order: PASS")