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-rw-r--r--src/libstd/io/test.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/libstd/io/test.rs b/src/libstd/io/test.rs
index c83dbe49b65..b491891ff59 100644
--- a/src/libstd/io/test.rs
+++ b/src/libstd/io/test.rs
@@ -121,6 +121,7 @@ fn base_port() -> u16 {
     return final_base;
 }
 
+/// Raises the file descriptor limit when running tests if necessary
 pub fn raise_fd_limit() {
     unsafe { darwin_fd_limit::raise_fd_limit() }
 }