bpo-36594: Fix incorrect use of %p in format strings (GH-12769)

In addition, fix some other minor violations of C99.

2 files changed, 6 insertions, 6 deletions

diff --git a/Modules/_ctypes/_ctypes_test.c b/Modules/_ctypes/_ctypes_test.c
index f8420580ff..bae4976a08 100644
--- a/Modules/_ctypes/_ctypes_test.c
+++ b/Modules/_ctypes/_ctypes_test.c
@@ -87,7 +87,7 @@ EXPORT(void)testfunc_array(int values[4])
 EXPORT(long double)testfunc_Ddd(double a, double b)
 {
     long double result = (long double)(a * b);
-    printf("testfunc_Ddd(%p, %p)\n", &a, &b);
+    printf("testfunc_Ddd(%p, %p)\n", (void *)&a, (void *)&b);
     printf("testfunc_Ddd(%g, %g)\n", a, b);
     return result;
 }
@@ -95,7 +95,7 @@ EXPORT(long double)testfunc_Ddd(double a, double b)
 EXPORT(long double)testfunc_DDD(long double a, long double b)
 {
     long double result = a * b;
-    printf("testfunc_DDD(%p, %p)\n", &a, &b);
+    printf("testfunc_DDD(%p, %p)\n", (void *)&a, (void *)&b);
     printf("testfunc_DDD(%Lg, %Lg)\n", a, b);
     return result;
 }
@@ -103,7 +103,7 @@ EXPORT(long double)testfunc_DDD(long double a, long double b)
 EXPORT(int)testfunc_iii(int a, int b)
 {
     int result = a * b;
-    printf("testfunc_iii(%p, %p)\n", &a, &b);
+    printf("testfunc_iii(%p, %p)\n", (void *)&a, (void *)&b);
     return result;
 }
 
@@ -361,7 +361,7 @@ static void _xxx_init(void *(*Xalloc)(int), void (*Xfree)(void *))
 {
     void *ptr;
 
-    printf("_xxx_init got %p %p\n", Xalloc, Xfree);
+    printf("_xxx_init got %p %p\n", (void *)Xalloc, (void *)Xfree);
     printf("calling\n");
     ptr = Xalloc(32);
     Xfree(ptr);
diff --git a/Modules/_ctypes/callproc.c b/Modules/_ctypes/callproc.c
index 1ad842eb3d..a8ba84be4a 100644
--- a/Modules/_ctypes/callproc.c
+++ b/Modules/_ctypes/callproc.c
@@ -531,11 +531,11 @@ PyCArg_repr(PyCArgObject *self)
     default:
         if (is_literal_char((unsigned char)self->tag)) {
             sprintf(buffer, "<cparam '%c' at %p>",
-                (unsigned char)self->tag, self);
+                (unsigned char)self->tag, (void *)self);
         }
         else {
             sprintf(buffer, "<cparam 0x%02x at %p>",
-                (unsigned char)self->tag, self);
+                (unsigned char)self->tag, (void *)self);
         }
         break;
     }