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-rw-r--r--ext/io/console/console.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/ext/io/console/console.c b/ext/io/console/console.c
index c2660d2ac9..635c2afc9b 100644
--- a/ext/io/console/console.c
+++ b/ext/io/console/console.c
@@ -587,7 +587,9 @@ console_dev(VALUE klass)
fptr->f2 = ofptr->f;
ofptr->f = 0;
# endif
+ optr->mode |= FMODE_SYNC;
#endif
+ fptr->mode |= FMODE_SYNC;
rb_const_set(klass, id_console, con);
}
return con;