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-rw-r--r--ext/sleepy_penguin/sleepy_penguin.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/ext/sleepy_penguin/sleepy_penguin.h b/ext/sleepy_penguin/sleepy_penguin.h
index 4ed0663..522ac0a 100644
--- a/ext/sleepy_penguin/sleepy_penguin.h
+++ b/ext/sleepy_penguin/sleepy_penguin.h
@@ -77,6 +77,7 @@ static inline VALUE fake_blocking_region(VALUE (*fn)(void *), void *data)
 
 typedef int rb_sp_waitfn(int fd);
 int rb_sp_wait(rb_sp_waitfn waiter, VALUE obj, int *fd);
+void *rb_sp_gettlsbuf(size_t *size);
 
 /* Flexible array elements are standard in C99 */
 #if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)