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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 committed by Hans Kristian Rosbach
parent 4af454bfa7
commit e713f2f460
1 changed files with 1 additions and 1 deletions
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2
gzwrite.c
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@ -460,7 +460,7 @@ int Z_EXPORT PREFIX(gzsetparams)(gzFile file, int level, int 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 */