* decompress.c: Minor simplifications.

(Fzlib_decompress_region): Don't bother verifying
that avail_out <= UINT_MAX, as that was confusing.
Mention the restriction in a comment instead.
Prefer 'int' to 'ptrdiff_t' when 'int' is wide enough.

2 files changed, 11 insertions, 5 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 0c0583684dc..d89f702a2aa 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,11 @@
+2013-08-13  Paul Eggert  <eggert@cs.ucla.edu>
+
+        * decompress.c: Minor simplifications.
+        (Fzlib_decompress_region): Don't bother verifying
+        that avail_out <= UINT_MAX, as that was confusing.
+        Mention the restriction in a comment instead.
+        Prefer 'int' to 'ptrdiff_t' when 'int' is wide enough.
+
 2013-08-13  Jan Djärv  <jan.h.d@swipnet.se>
 
         * nsmenu.m (x_activate_menubar): Check for OSX >= 10.5
diff --git a/src/decompress.c b/src/decompress.c
index 452a9210402..c54a34e050e 100644
--- a/src/decompress.c
+++ b/src/decompress.c
@@ -183,12 +183,10 @@ This function can be called only in unibyte buffers.  */)
     {
       /* Maximum number of bytes that one 'inflate' call should read and write.
          Do not make avail_out too large, as that might unduly delay C-g.
-         In any case zlib requires that these values not exceed UINT_MAX.  */
+         zlib requires that avail_in and avail_out not exceed UINT_MAX.  */
       ptrdiff_t avail_in = min (iend - pos_byte, UINT_MAX);
-      enum { avail_out = 1 << 14 };
-      verify (avail_out <= UINT_MAX);
-
-      ptrdiff_t decompressed;
+      int avail_out = 16 * 1024;
+      int decompressed;
 
       if (GAP_SIZE < avail_out)
         make_gap (avail_out - GAP_SIZE);