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-rw-r--r--package/config/expr.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/package/config/expr.h b/package/config/expr.h
index cac51f6a8..7d39ff43e 100644
--- a/package/config/expr.h
+++ b/package/config/expr.h
@@ -174,6 +174,8 @@ void expr_extract_eq(enum expr_type type, struct expr **ep, struct expr **ep1, s
struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym);
void expr_fprint(struct expr *e, FILE *out);
+struct gstr; /* forward */
+void expr_gstr_print(struct expr *e, struct gstr *gs);
static inline int expr_is_yes(struct expr *e)
{