summaryrefslogtreecommitdiff
path: root/compress.c
diff options
context:
space:
mode:
authorMark Adler <madler@alumni.caltech.edu>2012-08-12 18:08:52 -0700
committerMark Adler <madler@alumni.caltech.edu>2012-08-13 00:02:40 -0700
commit62d6112a7981ad7c34f3b43cffdf00d4662a4f25 (patch)
treeaed93070f7e1be31868dce1d62a1de6ffc1360f9 /compress.c
parentfb4e0599a5ddaef9eee726f786b9edef4943432b (diff)
downloadzlib-62d6112a7981ad7c34f3b43cffdf00d4662a4f25.tar.gz
Clean up the usage of z_const and respect const usage within zlib.
This patch allows zlib to compile cleanly with the -Wcast-qual gcc warning enabled, but only if ZLIB_CONST is defined, which adds const to next_in and msg in z_stream and in the in_func prototype. A --const option is added to ./configure which adds -DZLIB_CONST to the compile flags, and adds -Wcast-qual to the compile flags when ZLIBGCCWARN is set in the environment.
Diffstat (limited to 'compress.c')
-rw-r--r--compress.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/compress.c b/compress.c
index ea4dfbe..6e97626 100644
--- a/compress.c
+++ b/compress.c
@@ -29,7 +29,7 @@ int ZEXPORT compress2 (dest, destLen, source, sourceLen, level)
z_stream stream;
int err;
- stream.next_in = (Bytef*)source;
+ stream.next_in = (z_const Bytef *)source;
stream.avail_in = (uInt)sourceLen;
#ifdef MAXSEG_64K
/* Check for source > 64K on 16-bit machine: */