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From 02a6049eb3884c430268bb0fe3296d597a03174c Mon Sep 17 00:00:00 2001
From: Mark Adler <madler@alumni.caltech.edu>
Date: Mon, 26 Dec 2022 23:36:01 -0800
Subject: [PATCH] Fix crash when gzsetparams() attempted for transparent write.
gzsetparams() now returns a Z_STREAM_ERROR in this case.i
Reference:https://github.com/madler/zlib/commit/02a6049eb3884c430268bb0fe3296d597a03174c
Conflict:NA
---
gzwrite.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/gzwrite.c b/gzwrite.c
index eb8a0e589..3030d74d6 100644
--- a/gzwrite.c
+++ b/gzwrite.c
@@ -609,7 +609,7 @@ int ZEXPORT gzsetparams(file, level, strategy)
strm = &(state->strm);
/* check that we're writing and that there's no error */
- if (state->mode != GZ_WRITE || state->err != Z_OK)
+ if (state->mode != GZ_WRITE || state->err != Z_OK || state->direct)
return Z_STREAM_ERROR;
/* if no change is requested, then do nothing */
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