From e449cbcc37af03e5ed1942f3a49edd4df39075bc Mon Sep 17 00:00:00 2001
From: Kornel <kornel@geekhood.net>
Date: Thu, 12 Oct 2023 16:36:09 +0100
Subject: [PATCH] Small fixes

---
 .gitignore       |  1 +
 adler32.c        | 14 +++++++-------
 compress.c       |  2 +-
 examples/gzlog.c |  2 ++
 gzguts.h         |  4 ++++
 5 files changed, 15 insertions(+), 8 deletions(-)

diff --git a/.gitignore b/.gitignore
index 4b8edc043..860ac9829 100644
--- a/.gitignore
+++ b/.gitignore
@@ -22,6 +22,7 @@
 /minigzipsh
 /zlib.pc
 /zconf.h.included
+/configure.log
 
 .DS_Store
 
diff --git a/adler32.c b/adler32.c
index 5b02d214f..b1567908c 100644
--- a/adler32.c
+++ b/adler32.c
@@ -7,10 +7,6 @@
 
 #include "zutil.h"
 
-#define local static
-
-local uLong adler32_combine_(uLong adler1, uLong adler2, z_off64_t len2);
-
 #define BASE 65521U     /* largest prime smaller than 65536 */
 #define NMAX 5552
 /* NMAX is the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1 */
@@ -66,8 +62,7 @@ local uLong adler32_combine_(uLong adler1, uLong adler2, z_off64_t len2);
 #endif
 
 /* ========================================================================= */
-uLong ZEXPORT adler32(uLong adler, const Bytef *buf, uInt len)
-{
+uLong ZEXPORT adler32_z(uLong adler, const Bytef *buf, z_size_t len) {
     unsigned long sum2;
     unsigned n;
 
@@ -139,7 +134,12 @@ uLong ZEXPORT adler32(uLong adler, const Bytef *buf, uInt len)
 }
 
 /* ========================================================================= */
-static uLong adler32_combine_(uLong adler1, uLong adler2, z_off64_t len2) {
+uLong ZEXPORT adler32(uLong adler, const Bytef *buf, uInt len) {
+    return adler32_z(adler, buf, len);
+}
+
+/* ========================================================================= */
+local uLong adler32_combine_(uLong adler1, uLong adler2, z_off64_t len2) {
     unsigned long sum1;
     unsigned long sum2;
     unsigned rem;
diff --git a/compress.c b/compress.c
index 2429fb2bb..f43bacf7a 100644
--- a/compress.c
+++ b/compress.c
@@ -23,7 +23,7 @@ int ZEXPORT compress2(Bytef *dest, uLongf *destLen, const Bytef *source,
                       uLong sourceLen, int level) {
     z_stream stream;
     int err;
-    const uInt max = -1;
+    const uInt max = (uInt)-1;
     uLong left;
 
     left = *destLen;
diff --git a/examples/gzlog.c b/examples/gzlog.c
index d558777e2..b977802dd 100644
--- a/examples/gzlog.c
+++ b/examples/gzlog.c
@@ -756,12 +756,14 @@ local int log_recover(struct log *log, int op)
                 return -2;
             }
             if ((fd = open(log->path, O_RDONLY, 0)) < 0) {
+                free(data);
                 log_log(log, op, ".add file read failure");
                 return -1;
             }
             ret = (size_t)read(fd, data, len) != len;
             close(fd);
             if (ret) {
+                free(data);
                 log_log(log, op, ".add file read failure");
                 return -1;
             }
diff --git a/gzguts.h b/gzguts.h
index 9a6425b4f..f9375047e 100644
--- a/gzguts.h
+++ b/gzguts.h
@@ -38,6 +38,10 @@
 #  include <io.h>
 #endif
 
+#if defined(_WIN32)
+#  define WIDECHAR
+#endif
+
 #ifdef WINAPI_FAMILY
 #  define open _open
 #  define read _read