don't check for thread support on Tcl 9.x, as it is always threaded and the tcl_platform(threaded) variable has been removed

Michiel Jan Laurens de Hoon · Michiel Jan Laurens de Hoon · commit 63af66c67343 · 2025-11-08T23:29:55.000+09:00
diff --git a/Modules/_tkinter.c b/Modules/_tkinter.c
@@ -225,6 +225,7 @@ _get_tcl_lib_path(void)
 
 */
 
+#if TCL_MAJOR_VERSION < 9  /* Tcl 9.x is always threaded */
 static int
 _check_tcl_threaded(void)
 {
@@ -239,6 +240,7 @@ _check_tcl_threaded(void)
     if (threaded == NULL) return 0;
     else return 1;
 }
+#endif
 
 static Tcl_ThreadDataKey state_key;
 typedef PyThreadState *ThreadSpecificData;
@@ -3414,11 +3416,13 @@ PyInit__tkinter(void)
 {
     PyObject *m, *uexe, *cexe;
 
+#if TCL_MAJOR_VERSION < 9  /* Tcl 9.x is always threaded */
     if (_check_tcl_threaded() == 0) {
         PyErr_SetString(PyExc_ImportError,
                         "Tcl must be compiled with thread support");
         return 0;
     }
+#endif
 
     m = PyModule_Create(&_tkintermodule);
     if (m == NULL)

Original file line number	Diff line number	Diff line change
`@@ -225,6 +225,7 @@ _get_tcl_lib_path(void)`
`225`	`225`
`226`	`226`	`*/`
`227`	`227`
	`228`	`+#if TCL_MAJOR_VERSION < 9 /* Tcl 9.x is always threaded */`
`228`	`229`	`static int`
`229`	`230`	`_check_tcl_threaded(void)`
`230`	`231`	`{`
`@@ -239,6 +240,7 @@ _check_tcl_threaded(void)`
`239`	`240`	`if (threaded == NULL) return 0;`
`240`	`241`	`else return 1;`
`241`	`242`	`}`
	`243`	`+#endif`
`242`	`244`
`243`	`245`	`static Tcl_ThreadDataKey state_key;`
`244`	`246`	`typedef PyThreadState *ThreadSpecificData;`
`@@ -3414,11 +3416,13 @@ PyInit__tkinter(void)`
`3414`	`3416`	`{`
`3415`	`3417`	`PyObject m, uexe, *cexe;`
`3416`	`3418`
	`3419`	`+#if TCL_MAJOR_VERSION < 9 /* Tcl 9.x is always threaded */`
`3417`	`3420`	`if (_check_tcl_threaded() == 0) {`
`3418`	`3421`	`PyErr_SetString(PyExc_ImportError,`
`3419`	`3422`	`"Tcl must be compiled with thread support");`
`3420`	`3423`	`return 0;`
`3421`	`3424`	`}`
	`3425`	`+#endif`
`3422`	`3426`
`3423`	`3427`	`m = PyModule_Create(&_tkintermodule);`
`3424`	`3428`	`if (m == NULL)`