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Fix crash when gzsetparams() attempted for transparent write.

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gzsetparams() now returns a Z_STREAM_ERROR in this case.
This commit is contained in:
Mark Adler 2022-12-26 23:36:01 -08:00
parent e554695638
commit 02a6049eb3
1 changed files with 1 additions and 1 deletions
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gzwrite.c
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@ -609,7 +609,7 @@ int ZEXPORT gzsetparams(file, level, strategy)
strm = &(state->strm); strm = &(state->strm);
/* check that we're writing and that there's no error */ /* 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; return Z_STREAM_ERROR;
/* if no change is requested, then do nothing */ /* if no change is requested, then do nothing */