bpo-30600: Fix error messages (condition order in Argument Clinic) (#2051)

The function '_PyArg_ParseStack()' and
'_PyArg_UnpackStack' were failing (with error
"XXX() takes Y argument (Z given)") before
the function '_PyArg_NoStackKeywords()' was called.
Thus, the latter did not raise its more meaningful
error : "XXX() takes no keyword arguments".

1 files changed, 4 insertions, 4 deletions

diff --git a/Modules/clinic/_tracemalloc.c.h b/Modules/clinic/_tracemalloc.c.h
index 2950051..b53fa3e 100644
--- a/Modules/clinic/_tracemalloc.c.h
+++ b/Modules/clinic/_tracemalloc.c.h
@@ -95,12 +95,12 @@ _tracemalloc_start(PyObject *module, PyObject **args, Py_ssize_t nargs, PyObject
     PyObject *return_value = NULL;
     Py_ssize_t nframe = 1;
 
-    if (!_PyArg_ParseStack(args, nargs, "|n:start",
-        &nframe)) {
+    if (!_PyArg_NoStackKeywords("start", kwnames)) {
         goto exit;
     }
 
-    if (!_PyArg_NoStackKeywords("start", kwnames)) {
+    if (!_PyArg_ParseStack(args, nargs, "|n:start",
+        &nframe)) {
         goto exit;
     }
     return_value = _tracemalloc_start_impl(module, nframe);
@@ -189,4 +189,4 @@ _tracemalloc_get_traced_memory(PyObject *module, PyObject *Py_UNUSED(ignored))
 {
     return _tracemalloc_get_traced_memory_impl(module);
 }
-/*[clinic end generated code: output=159ce5d627964f09 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=ca7b197d1bdcdf27 input=a9049054013a1b77]*/