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-rw-r--r--transcode.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/transcode.c b/transcode.c
index 3dbdb44d1c..5c9e7d8264 100644
--- a/transcode.c
+++ b/transcode.c
@@ -133,6 +133,8 @@ struct rb_econv_t {
* Dispatch data and logic
*/
+#define SUPPLEMENTAL_CONVERSION(sname, dname) (*(sname) == '\0' || *(dname) == '\0')
+
typedef struct {
const char *sname;
const char *dname;
@@ -1635,7 +1637,11 @@ stateless_encoding_i(st_data_t key, st_data_t val, st_data_t arg)
if (st_lookup(table2, (st_data_t)data->stateful_enc, &v)) {
transcoder_entry_t *entry = (transcoder_entry_t *)v;
- const rb_transcoder *tr = load_transcoder_entry(entry);
+ const rb_transcoder *tr;
+ if (SUPPLEMENTAL_CONVERSION(entry->sname, entry->dname)) {
+ return ST_CONTINUE;
+ }
+ tr = load_transcoder_entry(entry);
if (tr && tr->stateful_type == stateful_encoder) {
data->stateless_enc = tr->src_encoding;
return ST_STOP;