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-rw-r--r--configure.in2
1 files changed, 1 insertions, 1 deletions
diff --git a/configure.in b/configure.in
index 8390c1154d..b6bc0a03d4 100644
--- a/configure.in
+++ b/configure.in
@@ -272,7 +272,7 @@ cygwin*) rb_cv_have_daylight=no
ac_cv_func_setitimer=no
;;
mingw*) LIBS="-lwsock32 $LIBS"
- rb_cv_need_io_flush_between_rw=no
+ rb_cv_need_io_flush_between_rw=yes
rb_cv_need_io_flush_before_seek=no
ac_cv_header_a_out_h=no
ac_cv_header_pwd_h=no