From 2ba25b2ddab9aa939c321d087fcfca573a9cca55 Mon Sep 17 00:00:00 2001
From: Lwisce Zeng <Lwisce.Zeng@garmin.com>
Date: Mon, 1 Apr 2024 15:55:13 +0800
Subject: Use z_const for setting msg to literal strings.

---
 examples/gun.c | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

(limited to 'examples')

diff --git a/examples/gun.c b/examples/gun.c
index bea5497..dbd181c 100644
--- a/examples/gun.c
+++ b/examples/gun.c
@@ -227,12 +227,12 @@ local int lunpipe(unsigned have, z_const unsigned char *next, struct ind *indp,
     if (last == -1)
         return Z_BUF_ERROR;
     if (flags & 0x60) {
-        strm->msg = (char *)"unknown lzw flags set";
+        strm->msg = (z_const char *)"unknown lzw flags set";
         return Z_DATA_ERROR;
     }
     max = flags & 0x1f;
     if (max < 9 || max > 16) {
-        strm->msg = (char *)"lzw bits out of range";
+        strm->msg = (z_const char *)"lzw bits out of range";
         return Z_DATA_ERROR;
     }
     if (max == 9)                           /* 9 doesn't really mean 9 */
@@ -252,7 +252,7 @@ local int lunpipe(unsigned have, z_const unsigned char *next, struct ind *indp,
     if (NEXT() == -1)                       /* missing a bit */
         return Z_BUF_ERROR;
     if (last & 1) {                         /* code must be < 256 */
-        strm->msg = (char *)"invalid lzw code";
+        strm->msg = (z_const char *)"invalid lzw code";
         return Z_DATA_ERROR;
     }
     rem = (unsigned)last >> 1;              /* remaining 7 bits */
@@ -319,7 +319,7 @@ local int lunpipe(unsigned have, z_const unsigned char *next, struct ind *indp,
                to detect random or corrupted input after a compress header.
                In any case, the prev > end check must be retained. */
             if (code != end + 1 || prev > end) {
-                strm->msg = (char *)"invalid lzw code";
+                strm->msg = (z_const char *)"invalid lzw code";
                 return Z_DATA_ERROR;
             }
             match[stack++] = (unsigned char)final;
@@ -404,7 +404,7 @@ local int gunpipe(z_stream *strm, int infile, int outfile)
             break;                          /* empty gzip stream is ok */
         }
         if (last != 31 || (NEXT() != 139 && last != 157)) {
-            strm->msg = (char *)"incorrect header check";
+            strm->msg = (z_const char *)"incorrect header check";
             ret = first ? Z_DATA_ERROR : Z_ERRNO;
             break;                          /* not a gzip or compress header */
         }
@@ -420,7 +420,7 @@ local int gunpipe(z_stream *strm, int infile, int outfile)
         ret = Z_BUF_ERROR;
         if (NEXT() != 8) {                  /* only deflate method allowed */
             if (last == -1) break;
-            strm->msg = (char *)"unknown compression method";
+            strm->msg = (z_const char *)"unknown compression method";
             ret = Z_DATA_ERROR;
             break;
         }
@@ -433,7 +433,7 @@ local int gunpipe(z_stream *strm, int infile, int outfile)
         NEXT();
         if (last == -1) break;
         if (flags & 0xe0) {
-            strm->msg = (char *)"unknown header flags set";
+            strm->msg = (z_const char *)"unknown header flags set";
             ret = Z_DATA_ERROR;
             break;
         }
@@ -486,7 +486,7 @@ local int gunpipe(z_stream *strm, int infile, int outfile)
             NEXT() != (int)((outd.crc >> 24) & 0xff)) {
             /* crc error */
             if (last != -1) {
-                strm->msg = (char *)"incorrect data check";
+                strm->msg = (z_const char *)"incorrect data check";
                 ret = Z_DATA_ERROR;
             }
             break;
@@ -497,7 +497,7 @@ local int gunpipe(z_stream *strm, int infile, int outfile)
             NEXT() != (int)((outd.total >> 24) & 0xff)) {
             /* length error */
             if (last != -1) {
-                strm->msg = (char *)"incorrect length check";
+                strm->msg = (z_const char *)"incorrect length check";
                 ret = Z_DATA_ERROR;
             }
             break;
-- 
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