When decoding, prefer ptrdiff_t to int for buffer positions etc.

* coding.c (detect_coding_utf_8, emacs_mule_char)
(detect_coding_iso_2022, encode_coding_iso_2022, check_ascii)
(check_utf_8, decode_coding):
* coding.h (struct coding_system.errors):
Use ptrdiff_t, not int, for integer values derived from buffer and
string positions.

1 files changed, 8 insertions, 0 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index e875bc8a40d..96aee86932b 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,5 +1,13 @@
 2014-01-26  Paul Eggert  <eggert@cs.ucla.edu>
 
+        When decoding, prefer ptrdiff_t to int for buffer positions etc.
+        * coding.c (detect_coding_utf_8, emacs_mule_char)
+        (detect_coding_iso_2022, encode_coding_iso_2022, check_ascii)
+        (check_utf_8, decode_coding):
+        * coding.h (struct coding_system.errors):
+        Use ptrdiff_t, not int, for integer values derived from buffer and
+        string positions.
+
         Fix crash with insert-file-contents and misdecoded text (Bug#16286).
         * fileio.c (Finsert_file_contents): Set CODING_MODE_LAST_BLOCK
         before invoking decode_coding_gap, since there's just one block.