Update zlib sources to zlib-1.2.13

#20

README

@@ -10,8 +10,8 @@
            and/or modify it under the same terms as Perl itself.
 
               The directory zlib-src contains a subset of the
-             source files copied directly from zlib version 1.2.11.
-                  These files are Copyright(C) 1995-2017
+             source files copied directly from zlib version 1.2.13.
+                  These files are Copyright(C) 1995-2022
                      Jean-loup Gailly and Mark Adler.
              Full source for the zlib library is available at
                             http://www.zlib.org
@@ -98,16 +98,16 @@ before building this module.
 
   For option 2, fetch a copy of the zlib source distribution from
   http://www.zlib.org and unpack it into the Compress-Raw-Zlib source
-  directory. Assuming you have fetched zlib 1.2.11,
-  it will create a directory called zlib-1.2.11.
+  directory. Assuming you have fetched zlib 1.2.13,
+  it will create a directory called zlib-1.2.13.
 
   Now set the variables in the file config.in as follows (if the version
-  you have fetched isn't 1.2.11, change the INCLUDE and LIB
+  you have fetched isn't 1.2.13, change the INCLUDE and LIB
   variables appropriately):
 
       BUILD_ZLIB   = True
-      INCLUDE      = ./zlib-1.2.11
-      LIB          = ./zlib-1.2.11
+      INCLUDE      = ./zlib-1.2.13
+      LIB          = ./zlib-1.2.13
       OLD_ZLIB     = False
       GZIP_OS_CODE = AUTO_DETECT
 

zlib-src/crc32.c

@@ -98,13 +98,22 @@
 #  endif
 #endif
 
+/* If available, use the ARM processor CRC32 instruction. */
+#if defined(__aarch64__) && defined(__ARM_FEATURE_CRC32) && W == 8
+#  define ARMCRC32
+#endif
+
 /* Local functions. */
 local z_crc_t multmodp OF((z_crc_t a, z_crc_t b));
 local z_crc_t x2nmodp OF((z_off64_t n, unsigned k));
 
-/* If available, use the ARM processor CRC32 instruction. */
-#if defined(__aarch64__) && defined(__ARM_FEATURE_CRC32) && W == 8
-#  define ARMCRC32
+#if defined(W) && (!defined(ARMCRC32) || defined(DYNAMIC_CRC_TABLE))
+    local z_word_t byte_swap OF((z_word_t word));
+#endif
+
+#if defined(W) && !defined(ARMCRC32)
+    local z_crc_t crc_word OF((z_word_t data));
+    local z_word_t crc_word_big OF((z_word_t data));
 #endif
 
 #if defined(W) && (!defined(ARMCRC32) || defined(DYNAMIC_CRC_TABLE))
@@ -645,8 +654,8 @@ unsigned long ZEXPORT crc32_z(
     len &= 7;
 
     /* Do three interleaved CRCs to realize the throughput of one crc32x
-       instruction per cycle. Each CRC is calcuated on Z_BATCH words. The three
-       CRCs are combined into a single CRC after each set of batches. */
+       instruction per cycle. Each CRC is calculated on Z_BATCH words. The
+       three CRCs are combined into a single CRC after each set of batches. */
     while (num >= 3 * Z_BATCH) {
         crc1 = 0;
         crc2 = 0;
@@ -1086,7 +1095,7 @@ uLong ZEXPORT crc32_combine(
     uLong crc2,
     z_off_t len2)
 {
-    return crc32_combine64(crc1, crc2, len2);
+    return crc32_combine64(crc1, crc2, (z_off64_t)len2);
 }
 
 /* ========================================================================= */
@@ -1103,7 +1112,7 @@ uLong ZEXPORT crc32_combine_gen64(
 uLong ZEXPORT crc32_combine_gen(
     z_off_t len2)
 {
-    return crc32_combine_gen64(len2);
+    return crc32_combine_gen64((z_off64_t)len2);
 }
 
 /* ========================================================================= */