diff --git a/docs/examples/10-at-a-time.c b/docs/examples/10-at-a-time.c
index 99a031103..b30efc075 100644
--- a/docs/examples/10-at-a-time.c
+++ b/docs/examples/10-at-a-time.c
@@ -77,7 +77,7 @@ static const char *urls[] = {
 #define MAX 10 /* number of simultaneous transfers */
 #define CNT sizeof(urls)/sizeof(char*) /* total number of transfers to do */
 
-static int cb(char *d, size_t n, size_t l, void *p)
+static size_t cb(char *d, size_t n, size_t l, void *p)
 {
   /* take care of the data here, ignored in this example */
   (void)d;
diff --git a/docs/examples/anyauthput.c b/docs/examples/anyauthput.c
index bc6138f58..2c8f738ea 100644
--- a/docs/examples/anyauthput.c
+++ b/docs/examples/anyauthput.c
@@ -37,7 +37,7 @@
 /* ioctl callback function */
 static curlioerr my_ioctl(CURL *handle, curliocmd cmd, void *userp)
 {
-  int fd = (int)userp;
+  intptr_t fd = (intptr_t)userp;
 
   (void)handle; /* not used in here */
 
@@ -61,7 +61,7 @@ static size_t read_callback(void *ptr, size_t size, size_t nmemb, void *stream)
 {
   size_t retcode;
 
-  int fd = (int)stream;
+  intptr_t fd = (intptr_t)stream;
 
   retcode = read(fd, ptr, size * nmemb);
 
@@ -74,7 +74,7 @@ int main(int argc, char **argv)
 {
   CURL *curl;
   CURLcode res;
-  int hd ;
+  intptr_t hd ;
   struct stat file_info;
 
   char *file;
@@ -100,13 +100,13 @@ int main(int argc, char **argv)
     curl_easy_setopt(curl, CURLOPT_READFUNCTION, read_callback);
 
     /* which file to upload */
-    curl_easy_setopt(curl, CURLOPT_READDATA, hd);
+    curl_easy_setopt(curl, CURLOPT_READDATA, (void*)hd);
 
     /* set the ioctl function */
     curl_easy_setopt(curl, CURLOPT_IOCTLFUNCTION, my_ioctl);
 
     /* pass the file descriptor to the ioctl callback as well */
-    curl_easy_setopt(curl, CURLOPT_IOCTLDATA, hd);
+    curl_easy_setopt(curl, CURLOPT_IOCTLDATA, (void*)hd);
 
     /* enable "uploading" (which means PUT when doing HTTP) */
     curl_easy_setopt(curl, CURLOPT_UPLOAD, TRUE) ;
diff --git a/docs/examples/debug.c b/docs/examples/debug.c
index 1443ae55d..6f7a6383a 100644
--- a/docs/examples/debug.c
+++ b/docs/examples/debug.c
@@ -65,7 +65,7 @@ void dump(const char *text,
 
 static
 int my_trace(CURL *handle, curl_infotype type,
-             unsigned char *data, size_t size,
+             char *data, size_t size,
              void *userp)
 {
   struct data *config = (struct data *)userp;
@@ -98,7 +98,7 @@ int my_trace(CURL *handle, curl_infotype type,
     break;
   }
 
-  dump(text, stderr, data, size, config->trace_ascii);
+  dump(text, stderr, (unsigned char *)data, size, config->trace_ascii);
   return 0;
 }
 
diff --git a/docs/examples/ftpget.c b/docs/examples/ftpget.c
index 42e70bd57..155e79cb7 100644
--- a/docs/examples/ftpget.c
+++ b/docs/examples/ftpget.c
@@ -26,7 +26,7 @@ struct FtpFile {
   FILE *stream;
 };
 
-static int my_fwrite(void *buffer, size_t size, size_t nmemb, void *stream)
+static size_t my_fwrite(void *buffer, size_t size, size_t nmemb, void *stream)
 {
   struct FtpFile *out=(struct FtpFile *)stream;
   if(out && !out->stream) {
diff --git a/docs/examples/multi-debugcallback.c b/docs/examples/multi-debugcallback.c
index 4c93df4dc..1cd6e4398 100644
--- a/docs/examples/multi-debugcallback.c
+++ b/docs/examples/multi-debugcallback.c
@@ -74,7 +74,7 @@ void dump(const char *text,
 
 static
 int my_trace(CURL *handle, curl_infotype type,
-             unsigned char *data, size_t size,
+             char *data, size_t size,
              void *userp)
 {
   const char *text;
diff --git a/tests/libtest/lib506.c b/tests/libtest/lib506.c
index eaf96d2e9..4bec2884f 100644
--- a/tests/libtest/lib506.c
+++ b/tests/libtest/lib506.c
@@ -107,10 +107,10 @@ static void *fire(void *ptr)
 
   headers = sethost(NULL);
   curl_easy_setopt(curl, CURLOPT_VERBOSE,    1);
-  curl_easy_setopt(curl, CURLOPT_HTTPHEADER, (void*)headers);
-  curl_easy_setopt(curl, CURLOPT_URL,        (void*)tdata->url);
+  curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
+  curl_easy_setopt(curl, CURLOPT_URL,        tdata->url);
   printf( "CURLOPT_SHARE\n" );
-  curl_easy_setopt(curl, CURLOPT_SHARE, (void*)tdata->share);
+  curl_easy_setopt(curl, CURLOPT_SHARE, tdata->share);
 
   printf( "PERFORM\n" );
   code = curl_easy_perform(curl);
@@ -222,7 +222,7 @@ int test(char *URL)
 
   url = suburl( URL, i );
   headers = sethost( NULL );
-  curl_easy_setopt( curl, CURLOPT_HTTPHEADER, (void*)headers );
+  curl_easy_setopt( curl, CURLOPT_HTTPHEADER, headers );
   curl_easy_setopt( curl, CURLOPT_URL,        url );
   printf( "CURLOPT_SHARE\n" );
   curl_easy_setopt( curl, CURLOPT_SHARE,      share );
diff --git a/tests/libtest/lib552.c b/tests/libtest/lib552.c
index 8c6e2be37..3cfeffe73 100644
--- a/tests/libtest/lib552.c
+++ b/tests/libtest/lib552.c
@@ -67,7 +67,7 @@ void dump(const char *text,
 
 static
 int my_trace(CURL *handle, curl_infotype type,
-             unsigned char *data, size_t size,
+             char *data, size_t size,
              void *userp)
 {
   struct data *config = (struct data *)userp;
@@ -100,7 +100,7 @@ int my_trace(CURL *handle, curl_infotype type,
     break;
   }
 
-  dump(text, stderr, data, size, config->trace_ascii);
+  dump(text, stderr, (unsigned char *)data, size, config->trace_ascii);
   return 0;
 }