diff --git a/src/audio/SDL_audiocvt.c b/src/audio/SDL_audiocvt.c
index 7d6bade42..34f505f6d 100644
--- a/src/audio/SDL_audiocvt.c
+++ b/src/audio/SDL_audiocvt.c
@@ -955,8 +955,8 @@ SDL_BuildAudioResampleCVT(SDL_AudioCVT * cvt, const int dst_channels,
     if (cvt->filter_index >= (SDL_AUDIOCVT_MAX_FILTERS-2)) {
         return SDL_SetError("Too many filters needed for conversion, exceeded maximum of %d", SDL_AUDIOCVT_MAX_FILTERS-2);
     }
-    cvt->filters[SDL_AUDIOCVT_MAX_FILTERS-1] = (SDL_AudioFilter) (size_t) src_rate;
-    cvt->filters[SDL_AUDIOCVT_MAX_FILTERS] = (SDL_AudioFilter) (size_t) dst_rate;
+    cvt->filters[SDL_AUDIOCVT_MAX_FILTERS-1] = (SDL_AudioFilter) (uintptr_t) src_rate;
+    cvt->filters[SDL_AUDIOCVT_MAX_FILTERS] = (SDL_AudioFilter) (uintptr_t) dst_rate;
 
     if (src_rate < dst_rate) {
         const double mult = ((double) dst_rate) / ((double) src_rate);
diff --git a/src/audio/SDL_audiodev.c b/src/audio/SDL_audiodev.c
index 42364027c..dc1daee1a 100644
--- a/src/audio/SDL_audiodev.c
+++ b/src/audio/SDL_audiodev.c
@@ -65,7 +65,7 @@ test_device(const int iscapture, const char *fname, int flags, int (*test) (int
                  * information,  making this information inaccessible at
                  * enumeration time
                  */
-                SDL_AddAudioDevice(iscapture, fname, NULL, (void *) dummyhandle);
+                SDL_AddAudioDevice(iscapture, fname, NULL, (void *) (uintptr_t) dummyhandle);
             }
         }
     }
diff --git a/src/render/opengles2/SDL_render_gles2.c b/src/render/opengles2/SDL_render_gles2.c
index f36b34f90..4343afb6b 100644
--- a/src/render/opengles2/SDL_render_gles2.c
+++ b/src/render/opengles2/SDL_render_gles2.c
@@ -961,7 +961,7 @@ SetDrawState(GLES2_RenderData *data, const SDL_RenderCommand *cmd, const GLES2_I
     }
 
     if (texture) {
-        data->glVertexAttribPointer(GLES2_ATTRIBUTE_TEXCOORD, 2, GL_FLOAT, GL_FALSE, 0, (const GLvoid *) (cmd->data.draw.first + (sizeof (GLfloat) * 8)));
+        data->glVertexAttribPointer(GLES2_ATTRIBUTE_TEXCOORD, 2, GL_FLOAT, GL_FALSE, 0, (const GLvoid *) (uintptr_t) (cmd->data.draw.first + (sizeof (GLfloat) * 8)));
     }
 
     if (GLES2_SelectProgram(data, imgsrc, texture ? texture->w : 0, texture ? texture->h : 0) < 0) {
@@ -1004,7 +1004,7 @@ SetDrawState(GLES2_RenderData *data, const SDL_RenderCommand *cmd, const GLES2_I
     }
 
     /* all drawing commands use this */
-    data->glVertexAttribPointer(GLES2_ATTRIBUTE_POSITION, 2, GL_FLOAT, GL_FALSE, 0, (const GLvoid *) cmd->data.draw.first);
+    data->glVertexAttribPointer(GLES2_ATTRIBUTE_POSITION, 2, GL_FLOAT, GL_FALSE, 0, (const GLvoid *) (uintptr_t) cmd->data.draw.first);
 
     if (is_copy_ex != was_copy_ex) {
         if (is_copy_ex) {
@@ -1018,8 +1018,8 @@ SetDrawState(GLES2_RenderData *data, const SDL_RenderCommand *cmd, const GLES2_I
     }
 
     if (is_copy_ex) {
-        data->glVertexAttribPointer(GLES2_ATTRIBUTE_ANGLE, 2, GL_FLOAT, GL_FALSE, 0, (const GLvoid *) (cmd->data.draw.first + (sizeof (GLfloat) * 16)));
-        data->glVertexAttribPointer(GLES2_ATTRIBUTE_CENTER, 2, GL_FLOAT, GL_FALSE, 0, (const GLvoid *) (cmd->data.draw.first + (sizeof (GLfloat) * 24)));
+        data->glVertexAttribPointer(GLES2_ATTRIBUTE_ANGLE, 2, GL_FLOAT, GL_FALSE, 0, (const GLvoid *) (uintptr_t) (cmd->data.draw.first + (sizeof (GLfloat) * 16)));
+        data->glVertexAttribPointer(GLES2_ATTRIBUTE_CENTER, 2, GL_FLOAT, GL_FALSE, 0, (const GLvoid *) (uintptr_t) (cmd->data.draw.first + (sizeof (GLfloat) * 24)));
     }
 
     return 0;
diff --git a/src/stdlib/SDL_iconv.c b/src/stdlib/SDL_iconv.c
index 004e7741c..2defa6eb5 100644
--- a/src/stdlib/SDL_iconv.c
+++ b/src/stdlib/SDL_iconv.c
@@ -55,13 +55,13 @@ SDL_COMPILE_TIME_ASSERT(iconv_t, sizeof (iconv_t) <= sizeof (SDL_iconv_t));
 SDL_iconv_t
 SDL_iconv_open(const char *tocode, const char *fromcode)
 {
-    return (SDL_iconv_t) ((size_t) iconv_open(tocode, fromcode));
+    return (SDL_iconv_t) ((uintptr_t) iconv_open(tocode, fromcode));
 }
 
 int
 SDL_iconv_close(SDL_iconv_t cd)
 {
-    return iconv_close((iconv_t) ((size_t) cd));
+    return iconv_close((iconv_t) ((uintptr_t) cd));
 }
 
 size_t
@@ -71,9 +71,9 @@ SDL_iconv(SDL_iconv_t cd,
 {
     size_t retCode;
 #ifdef ICONV_INBUF_NONCONST
-    retCode = iconv((iconv_t) ((size_t) cd), (char **) inbuf, inbytesleft, outbuf, outbytesleft);
+    retCode = iconv((iconv_t) ((uintptr_t) cd), (char **) inbuf, inbytesleft, outbuf, outbytesleft);
 #else
-    retCode = iconv((iconv_t) ((size_t) cd), inbuf, inbytesleft, outbuf, outbytesleft);
+    retCode = iconv((iconv_t) ((uintptr_t) cd), inbuf, inbytesleft, outbuf, outbytesleft);
 #endif
     if (retCode == (size_t) - 1) {
         switch (errno) {
diff --git a/src/video/SDL_egl.c b/src/video/SDL_egl.c
index 459273509..87d693e8d 100644
--- a/src/video/SDL_egl.c
+++ b/src/video/SDL_egl.c
@@ -507,12 +507,12 @@ SDL_EGL_LoadLibrary(_THIS, const char *egl_path, NativeDisplayType native_displa
         }
 
         if (_this->egl_data->eglGetPlatformDisplay) {
-            _this->egl_data->egl_display = _this->egl_data->eglGetPlatformDisplay(platform, (void *)(size_t)native_display, NULL);
+            _this->egl_data->egl_display = _this->egl_data->eglGetPlatformDisplay(platform, (void *)(uintptr_t)native_display, NULL);
         } else {
             if (SDL_EGL_HasExtension(_this, SDL_EGL_CLIENT_EXTENSION, "EGL_EXT_platform_base")) {
                 _this->egl_data->eglGetPlatformDisplayEXT = SDL_EGL_GetProcAddress(_this, "eglGetPlatformDisplayEXT");
                 if (_this->egl_data->eglGetPlatformDisplayEXT) {
-                    _this->egl_data->egl_display = _this->egl_data->eglGetPlatformDisplayEXT(platform, (void *)(size_t)native_display, NULL);
+                    _this->egl_data->egl_display = _this->egl_data->eglGetPlatformDisplayEXT(platform, (void *)(uintptr_t)native_display, NULL);
                 }
             }
         }
diff --git a/src/video/x11/SDL_x11mouse.c b/src/video/x11/SDL_x11mouse.c
index e20b430c3..a87712a5c 100644
--- a/src/video/x11/SDL_x11mouse.c
+++ b/src/video/x11/SDL_x11mouse.c
@@ -77,7 +77,7 @@ X11_CreateDefaultCursor()
     cursor = SDL_calloc(1, sizeof(*cursor));
     if (cursor) {
         /* None is used to indicate the default cursor */
-        cursor->driverdata = (void*)None;
+        cursor->driverdata = (void*)(uintptr_t)None;
     } else {
         SDL_OutOfMemory();
     }
@@ -216,7 +216,7 @@ X11_CreateCursor(SDL_Surface * surface, int hot_x, int hot_y)
         if (x11_cursor == None) {
             x11_cursor = X11_CreatePixmapCursor(surface, hot_x, hot_y);
         }
-        cursor->driverdata = (void*)x11_cursor;
+        cursor->driverdata = (void*)(uintptr_t)x11_cursor;
     } else {
         SDL_OutOfMemory();
     }
@@ -257,7 +257,7 @@ X11_CreateSystemCursor(SDL_SystemCursor id)
 
         x11_cursor = X11_XCreateFontCursor(GetDisplay(), shape);
 
-        cursor->driverdata = (void*)x11_cursor;
+        cursor->driverdata = (void*)(uintptr_t)x11_cursor;
     } else {
         SDL_OutOfMemory();
     }