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 +1,45 @@
+#!/usr/bin/env python3
+"""Guard the pymalloc setup block's C89 declarations and allocator order."""
+
+import re
+import sys
+from pathlib import Path
+
+source = Path(sys.argv[1]).read_text()
+setup = source[source.index("\n_PyMem_SetupAllocators("):]
+match = re.search(
+    r"case PYMEM_ALLOCATOR_PYMALLOC:\s*"
+    r"case PYMEM_ALLOCATOR_PYMALLOC_DEBUG:\s*\{(.*?)\n    \}",
+    setup,
+    re.S,
+)
+assert match, "pymalloc setup block not found"
+body = match.group(1)
+declarations = """
+    PyMemAllocatorEx malloc_alloc = MALLOC_ALLOC;
+    PyMemAllocatorEx pymalloc = PYMALLOC_ALLOC;
+"""
+assert body.split()[:len(declarations.split())] == declarations.split(), (
+    "both allocator initializers must precede the first statement for C89"
+)
+expected = declarations + """
+    PyMem_SetAllocator(PYMEM_DOMAIN_RAW, &malloc_alloc);
+    PyMem_SetAllocator(PYMEM_DOMAIN_MEM, &pymalloc);
+    PyMem_SetAllocator(PYMEM_DOMAIN_OBJ, &pymalloc);
+    if (allocator == PYMEM_ALLOCATOR_PYMALLOC_DEBUG) {
+        PyMem_SetupDebugHooks();
+    }
+    break;
+"""
+assert body.split() == expected.split(), (
+    "preserve allocator initializers, RAW/MEM/OBJ registration order, and debug hooks"
+)
+for name, values in (
+    ("MALLOC_ALLOC", "NULL, _PyMem_RawMalloc, _PyMem_RawCalloc, _PyMem_RawRealloc, _PyMem_RawFree"),
+    ("PYMALLOC_ALLOC", "NULL, _PyObject_Malloc, _PyObject_Calloc, _PyObject_Realloc, _PyObject_Free"),
+):
+    macro = re.search(r"#\s*define\s+" + name + r"\s+\{([^}]+)\}", source)
+    assert macro and macro.group(1).split() == values.split(), (
+        name + " must preserve ctx/malloc/calloc/realloc/free values and order"
+    )
+print("obmalloc setup allocators C89 declarations, field values, and RAW/MEM/OBJ/debug order: PASS")