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-rw-r--r--src/src/functions.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/src/functions.h b/src/src/functions.h
index 2ff6017d8..722fbf9d5 100644
--- a/src/src/functions.h
+++ b/src/src/functions.h
@@ -104,6 +104,7 @@ extern int auth_xtextdecode(uschar *, uschar **);
extern uschar *b64encode(uschar *, int);
extern int b64decode(uschar *, uschar **);
extern int bdat_getc(unsigned);
+extern int bdat_ungetc(int);
extern void bdat_flush_data(void);
extern void bits_clear(unsigned int *, size_t, int *);