bpo-33012: Fix invalid function cast warnings with gcc 8. (GH-6749)

Fix invalid function cast warnings with gcc 8
for method conventions different from METH_NOARGS, METH_O and
METH_VARARGS excluding Argument Clinic generated code.

4 files changed, 14 insertions, 14 deletions

diff --git a/Python/_warnings.c b/Python/_warnings.c
index 4065005354b..ccbc73f54e4 100644
--- a/Python/_warnings.c
+++ b/Python/_warnings.c
@@ -1150,7 +1150,7 @@ PyDoc_STRVAR(warn_explicit_doc,
 
 static PyMethodDef warnings_functions[] = {
     WARNINGS_WARN_METHODDEF
-    {"warn_explicit", (PyCFunction)warnings_warn_explicit,
+    {"warn_explicit", (PyCFunction)(void(*)(void))warnings_warn_explicit,
         METH_VARARGS | METH_KEYWORDS, warn_explicit_doc},
     {"_filters_mutated", (PyCFunction)warnings_filters_mutated, METH_NOARGS,
         NULL},
diff --git a/Python/bltinmodule.c b/Python/bltinmodule.c
index f0d342ae92d..e19bc5604ba 100644
--- a/Python/bltinmodule.c
+++ b/Python/bltinmodule.c
@@ -2195,7 +2195,7 @@ PyDoc_STRVAR(builtin_sorted__doc__,
 "reverse flag can be set to request the result in descending order.");
 
 #define BUILTIN_SORTED_METHODDEF    \
-    {"sorted", (PyCFunction)builtin_sorted, METH_FASTCALL | METH_KEYWORDS, builtin_sorted__doc__},
+    {"sorted", (PyCFunction)(void(*)(void))builtin_sorted, METH_FASTCALL | METH_KEYWORDS, builtin_sorted__doc__},
 
 static PyObject *
 builtin_sorted(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
@@ -2691,15 +2691,15 @@ PyTypeObject PyZip_Type = {
 
 
 static PyMethodDef builtin_methods[] = {
-    {"__build_class__", (PyCFunction)builtin___build_class__,
+    {"__build_class__", (PyCFunction)(void(*)(void))builtin___build_class__,
      METH_FASTCALL | METH_KEYWORDS, build_class_doc},
-    {"__import__",      (PyCFunction)builtin___import__, METH_VARARGS | METH_KEYWORDS, import_doc},
+    {"__import__",      (PyCFunction)(void(*)(void))builtin___import__, METH_VARARGS | METH_KEYWORDS, import_doc},
     BUILTIN_ABS_METHODDEF
     BUILTIN_ALL_METHODDEF
     BUILTIN_ANY_METHODDEF
     BUILTIN_ASCII_METHODDEF
     BUILTIN_BIN_METHODDEF
-    {"breakpoint",      (PyCFunction)builtin_breakpoint, METH_FASTCALL | METH_KEYWORDS, breakpoint_doc},
+    {"breakpoint",      (PyCFunction)(void(*)(void))builtin_breakpoint, METH_FASTCALL | METH_KEYWORDS, breakpoint_doc},
     BUILTIN_CALLABLE_METHODDEF
     BUILTIN_CHR_METHODDEF
     BUILTIN_COMPILE_METHODDEF
@@ -2709,7 +2709,7 @@ static PyMethodDef builtin_methods[] = {
     BUILTIN_EVAL_METHODDEF
     BUILTIN_EXEC_METHODDEF
     BUILTIN_FORMAT_METHODDEF
-    {"getattr",         (PyCFunction)builtin_getattr, METH_FASTCALL, getattr_doc},
+    {"getattr",         (PyCFunction)(void(*)(void))builtin_getattr, METH_FASTCALL, getattr_doc},
     BUILTIN_GLOBALS_METHODDEF
     BUILTIN_HASATTR_METHODDEF
     BUILTIN_HASH_METHODDEF
@@ -2721,13 +2721,13 @@ static PyMethodDef builtin_methods[] = {
     {"iter",            builtin_iter,       METH_VARARGS, iter_doc},
     BUILTIN_LEN_METHODDEF
     BUILTIN_LOCALS_METHODDEF
-    {"max",             (PyCFunction)builtin_max,        METH_VARARGS | METH_KEYWORDS, max_doc},
-    {"min",             (PyCFunction)builtin_min,        METH_VARARGS | METH_KEYWORDS, min_doc},
-    {"next",            (PyCFunction)builtin_next,       METH_FASTCALL, next_doc},
+    {"max",             (PyCFunction)(void(*)(void))builtin_max,        METH_VARARGS | METH_KEYWORDS, max_doc},
+    {"min",             (PyCFunction)(void(*)(void))builtin_min,        METH_VARARGS | METH_KEYWORDS, min_doc},
+    {"next",            (PyCFunction)(void(*)(void))builtin_next,       METH_FASTCALL, next_doc},
     BUILTIN_OCT_METHODDEF
     BUILTIN_ORD_METHODDEF
     BUILTIN_POW_METHODDEF
-    {"print",           (PyCFunction)builtin_print,      METH_FASTCALL | METH_KEYWORDS, print_doc},
+    {"print",           (PyCFunction)(void(*)(void))builtin_print,      METH_FASTCALL | METH_KEYWORDS, print_doc},
     BUILTIN_REPR_METHODDEF
     BUILTIN_ROUND_METHODDEF
     BUILTIN_SETATTR_METHODDEF
diff --git a/Python/context.c b/Python/context.c
index 302f7696bb6..d6ef5b337ca 100644
--- a/Python/context.c
+++ b/Python/context.c
@@ -648,7 +648,7 @@ static PyMethodDef PyContext_methods[] = {
     _CONTEXTVARS_CONTEXT_KEYS_METHODDEF
     _CONTEXTVARS_CONTEXT_VALUES_METHODDEF
     _CONTEXTVARS_CONTEXT_COPY_METHODDEF
-    {"run", (PyCFunction)context_run, METH_FASTCALL | METH_KEYWORDS, NULL},
+    {"run", (PyCFunction)(void(*)(void))context_run, METH_FASTCALL | METH_KEYWORDS, NULL},
     {NULL, NULL}
 };
 
diff --git a/Python/sysmodule.c b/Python/sysmodule.c
index 2284e88d4c1..0ca3de39f8b 100644
--- a/Python/sysmodule.c
+++ b/Python/sysmodule.c
@@ -1521,7 +1521,7 @@ sys_getandroidapilevel(PyObject *self)
 
 static PyMethodDef sys_methods[] = {
     /* Might as well keep this in alphabetic order */
-    {"breakpointhook",  (PyCFunction)sys_breakpointhook,
+    {"breakpointhook",  (PyCFunction)(void(*)(void))sys_breakpointhook,
      METH_FASTCALL | METH_KEYWORDS, breakpointhook_doc},
     {"callstats", sys_callstats, METH_NOARGS,
      callstats_doc},
@@ -1560,7 +1560,7 @@ static PyMethodDef sys_methods[] = {
     {"getrefcount",     (PyCFunction)sys_getrefcount, METH_O, getrefcount_doc},
     {"getrecursionlimit", sys_getrecursionlimit, METH_NOARGS,
      getrecursionlimit_doc},
-    {"getsizeof",   (PyCFunction)sys_getsizeof,
+    {"getsizeof",   (PyCFunction)(void(*)(void))sys_getsizeof,
      METH_VARARGS | METH_KEYWORDS, getsizeof_doc},
     {"_getframe", sys_getframe, METH_VARARGS, getframe_doc},
 #ifdef MS_WINDOWS
@@ -1601,7 +1601,7 @@ static PyMethodDef sys_methods[] = {
      set_coroutine_wrapper_doc},
     {"get_coroutine_wrapper", sys_get_coroutine_wrapper, METH_NOARGS,
      get_coroutine_wrapper_doc},
-    {"set_asyncgen_hooks", (PyCFunction)sys_set_asyncgen_hooks,
+    {"set_asyncgen_hooks", (PyCFunction)(void(*)(void))sys_set_asyncgen_hooks,
      METH_VARARGS | METH_KEYWORDS, set_asyncgen_hooks_doc},
     {"get_asyncgen_hooks", sys_get_asyncgen_hooks, METH_NOARGS,
      get_asyncgen_hooks_doc},