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gh-106023: Remove _PY_FASTCALL_SMALL_STACK constant #106258

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Merged
merged 1 commit into from
Jun 30, 2023
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gh-106023: Remove _PY_FASTCALL_SMALL_STACK constant #106258

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13 changes: 0 additions & 13 deletions Include/cpython/abstract.h
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Original file line number Diff line number Diff line change
Expand Up @@ -2,19 +2,6 @@
# error "this header file must not be included directly"
#endif

/* === Object Protocol ================================================== */

/* Suggested size (number of positional arguments) for arrays of PyObject*
allocated on a C stack to avoid allocating memory on the heap memory. Such
array is used to pass positional arguments to call functions of the
PyObject_Vectorcall() family.

The size is chosen to not abuse the C stack and so limit the risk of stack
overflow. The size is also chosen to allow using the small stack for most
function calls of the Python standard library. On 64-bit CPU, it allocates
40 bytes on the stack. */
#define _PY_FASTCALL_SMALL_STACK 5

/* === Vectorcall protocol (PEP 590) ============================= */

// PyVectorcall_NARGS() is exported as a function for the stable ABI.
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12 changes: 12 additions & 0 deletions Include/internal/pycore_call.h
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Expand Up @@ -10,6 +10,18 @@ extern "C" {

#include "pycore_pystate.h" // _PyThreadState_GET()

/* Suggested size (number of positional arguments) for arrays of PyObject*
allocated on a C stack to avoid allocating memory on the heap memory. Such
array is used to pass positional arguments to call functions of the
PyObject_Vectorcall() family.

The size is chosen to not abuse the C stack and so limit the risk of stack
overflow. The size is also chosen to allow using the small stack for most
function calls of the Python standard library. On 64-bit CPU, it allocates
40 bytes on the stack. */
#define _PY_FASTCALL_SMALL_STACK 5


// Export for shared stdlib extensions like the math extension,
// function used via inlined _PyObject_VectorcallTstate() function.
PyAPI_FUNC(PyObject*) _Py_CheckFunctionResult(
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