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-rw-r--r--erts/emulator/drivers/common/zlib_drv.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/erts/emulator/drivers/common/zlib_drv.c b/erts/emulator/drivers/common/zlib_drv.c
index acbe675c41..066cf87c9d 100644
--- a/erts/emulator/drivers/common/zlib_drv.c
+++ b/erts/emulator/drivers/common/zlib_drv.c
@@ -252,6 +252,7 @@ static int zlib_output(ZLibData* d)
return zlib_output_init(d);
}
+#ifdef HAVE_ZLIB_INFLATEGETDICTIONARY
static int zlib_inflate_get_dictionary(ZLibData* d)
{
ErlDrvBinary* dbin = driver_alloc_binary(INFL_DICT_SZ);
@@ -263,6 +264,7 @@ static int zlib_inflate_get_dictionary(ZLibData* d)
driver_free_binary(dbin);
return res;
}
+#endif
static int zlib_inflate(ZLibData* d, int flush)
{
@@ -603,9 +605,14 @@ static ErlDrvSSizeT zlib_ctl(ErlDrvData drv_data, unsigned int command, char *bu
return zlib_return(res, rbuf, rlen);
case INFLATE_GETDICT:
+#ifdef HAVE_ZLIB_INFLATEGETDICTIONARY
if (d->state != ST_INFLATE) goto badarg;
res = zlib_inflate_get_dictionary(d);
return zlib_return(res, rbuf, rlen);
+#else
+ errno = ENOTSUP;
+ return zlib_return(Z_ERRNO, rbuf, rlen);
+#endif
case INFLATE_SYNC:
if (d->state != ST_INFLATE) goto badarg;