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-rw-r--r--mrbgems/mruby-io/src/io.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/mrbgems/mruby-io/src/io.c b/mrbgems/mruby-io/src/io.c
index 0d7543578..b3e192899 100644
--- a/mrbgems/mruby-io/src/io.c
+++ b/mrbgems/mruby-io/src/io.c
@@ -33,7 +33,10 @@
typedef long fsuseconds_t;
typedef int fmode_t;
typedef int mrb_io_read_write_size;
+ #if !defined(_SSIZE_T_) && !defined(_SSIZE_T_DEFINED) && \
+ !defined(__have_typedef_ssize_t)
typedef SSIZE_T ssize_t;
+ #endif
#ifndef O_TMPFILE
#define O_TMPFILE O_TEMPORARY