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-rw-r--r--include/ruby/intern.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/ruby/intern.h b/include/ruby/intern.h
index 9b32298bde..7321a022a9 100644
--- a/include/ruby/intern.h
+++ b/include/ruby/intern.h
@@ -797,6 +797,7 @@ void rb_thread_check_ints(void);
int rb_thread_interrupted(VALUE thval);
VALUE rb_thread_blocking_region(rb_blocking_function_t *func, void *data1,
rb_unblock_function_t *ubf, void *data2);
+VALUE rb_thread_io_blocking_region(rb_blocking_function_t *func, void *data1, int fd);
#define RUBY_UBF_IO ((rb_unblock_function_t *)-1)
#define RUBY_UBF_PROCESS ((rb_unblock_function_t *)-1)
VALUE rb_mutex_new(void);