Prefer ptrdiff_t to int and avoid integer overflows.

* fileio.c (make_temp_name):
* font.c (font_parse_family_registry): Avoid integer
overflow on string size calculation.
* data.c (Faset): Likewise for byte index.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/fileio.c b/src/fileio.c
index 261928dd821..b4653017b28 100644
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -733,7 +733,7 @@ Lisp_Object
 make_temp_name (Lisp_Object prefix, bool base64_p)
 {
   Lisp_Object val, encoded_prefix;
-  int len;
+  ptrdiff_t len;
   printmax_t pid;
   char *p, *data;
   char pidbuf[INT_BUFSIZE_BOUND (printmax_t)];