bpo-32096: Remove obj and mem from _PyRuntime (#4532)

bpo-32096, bpo-30860:  Partially revert the commit
2ebc5ce42a8a9e047e790aefbf9a94811569b2b6:

* Move structures back from Include/internal/mem.h to
  Objects/obmalloc.c
* Remove _PyObject_Initialize() and _PyMem_Initialize()
* Remove Include/internal/pymalloc.h
* Add test_capi.test_pre_initialization_api():
   Make sure that it's possible to call Py_DecodeLocale(), and then call
   Py_SetProgramName() with the decoded string, before Py_Initialize().

PyMem_RawMalloc() and Py_DecodeLocale() can be called again before
_PyRuntimeState_Init().

Co-Authored-By: Eric Snow <ericsnowcurrently@gmail.com>

1 files changed, 23 insertions, 0 deletions

diff --git a/Programs/_testembed.c b/Programs/_testembed.c
index e68e68de32..52a0b5124a 100644
--- a/Programs/_testembed.c
+++ b/Programs/_testembed.c
@@ -125,6 +125,28 @@ static int test_forced_io_encoding(void)
     return 0;
 }
 
+
+/*********************************************************
+ * Test parts of the C-API that work before initialization
+ *********************************************************/
+
+static int test_pre_initialization_api(void)
+{
+    wchar_t *program = Py_DecodeLocale("spam", NULL);
+    if (program == NULL) {
+        fprintf(stderr, "Fatal error: cannot decode program name\n");
+        return 1;
+    }
+    Py_SetProgramName(program);
+
+    Py_Initialize();
+    Py_Finalize();
+
+    PyMem_RawFree(program);
+    return 0;
+}
+
+
 /* *********************************************************
  * List of test cases and the function that implements it.
  *
@@ -146,6 +168,7 @@ struct TestCase
 static struct TestCase TestCases[] = {
     { "forced_io_encoding", test_forced_io_encoding },
     { "repeated_init_and_subinterpreters", test_repeated_init_and_subinterpreters },
+    { "pre_initialization_api", test_pre_initialization_api },
     { NULL, NULL }
 };