GH-91079: Revert "GH-91079: Implement C stack limits using addresses, not counters. (GH-130007)" for now (GH130413)

Revert "GH-91079: Implement C stack limits using addresses, not counters. (GH-130007)" for now

Unfortunatlely, the change broke some buildbots.

This reverts commit 2498c22fa0a2b560491bc503fa676585c1a603d0.

1 files changed, 24 insertions, 3 deletions

diff --git a/Python/pythonrun.c b/Python/pythonrun.c
index 36390da..945e267 100644
--- a/Python/pythonrun.c
+++ b/Python/pythonrun.c
@@ -1528,8 +1528,12 @@ _Py_SourceAsString(PyObject *cmd, const char *funcname, const char *what, PyComp
 }
 
 #if defined(USE_STACKCHECK)
+#if defined(WIN32) && defined(_MSC_VER)
 
-/* Stack checking */
+/* Stack checking for Microsoft C */
+
+#include <malloc.h>
+#include <excpt.h>
 
 /*
  * Return non-zero when we run out of memory on the stack; zero otherwise.
@@ -1537,10 +1541,27 @@ _Py_SourceAsString(PyObject *cmd, const char *funcname, const char *what, PyComp
 int
 PyOS_CheckStack(void)
 {
-    PyThreadState *tstate = _PyThreadState_GET();
-    return _Py_ReachedRecursionLimit(tstate);
+    __try {
+        /* alloca throws a stack overflow exception if there's
+           not enough space left on the stack */
+        alloca(PYOS_STACK_MARGIN * sizeof(void*));
+        return 0;
+    } __except (GetExceptionCode() == STATUS_STACK_OVERFLOW ?
+                    EXCEPTION_EXECUTE_HANDLER :
+            EXCEPTION_CONTINUE_SEARCH) {
+        int errcode = _resetstkoflw();
+        if (errcode == 0)
+        {
+            Py_FatalError("Could not reset the stack!");
+        }
+    }
+    return 1;
 }
 
+#endif /* WIN32 && _MSC_VER */
+
+/* Alternate implementations can be added here... */
+
 #endif /* USE_STACKCHECK */
 
 /* Deprecated C API functions still provided for binary compatibility */