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-rw-r--r--include/ruby/fiber/scheduler.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/ruby/fiber/scheduler.h b/include/ruby/fiber/scheduler.h
index 3ea52beb95..ced092adbc 100644
--- a/include/ruby/fiber/scheduler.h
+++ b/include/ruby/fiber/scheduler.h
@@ -293,6 +293,7 @@ VALUE rb_fiber_scheduler_io_pwrite(VALUE scheduler, VALUE io, VALUE buffer, size
* @param[in] scheduler Target scheduler.
* @param[out] io An io object to read from.
* @param[out] buffer Return buffer.
+ * @param[in] size Size of the return buffer.
* @param[in] length Requested number of bytes to read.
* @retval RUBY_Qundef `scheduler` doesn't have `#io_read`.
* @return otherwise What `scheduler.io_read` returns.
@@ -305,6 +306,7 @@ VALUE rb_fiber_scheduler_io_read_memory(VALUE scheduler, VALUE io, void *buffer,
* @param[in] scheduler Target scheduler.
* @param[out] io An io object to write to.
* @param[in] buffer What to write.
+ * @param[in] size Size of the buffer.
* @param[in] length Number of bytes to write.
* @retval RUBY_Qundef `scheduler` doesn't have `#io_write`.
* @return otherwise What `scheduler.io_write` returns.