1 files changed, 0 insertions, 5 deletions
diff --git a/io.c b/io.c
index 8c14b7b9b0..0d75ee5013 100644
--- a/io.c
+++ b/io.c
@@ -152,9 +152,6 @@ VALUE rb_eEOFError;
 VALUE rb_eIOError;
 VALUE rb_mWaitReadable;
 VALUE rb_mWaitWritable;
-extern VALUE rb_eEAGAIN;
-extern VALUE rb_eEWOULDBLOCK;
-extern VALUE rb_eEINPROGRESS;
 
 static VALUE rb_eEAGAINWaitReadable;
 static VALUE rb_eEAGAINWaitWritable;
@@ -4361,8 +4358,6 @@ rb_io_fptr_finalize(rb_io_t *fptr)
     return 1;
 }
 
-size_t rb_econv_memsize(rb_econv_t *);
-
 RUBY_FUNC_EXPORTED size_t
 rb_io_memsize(const rb_io_t *fptr)
 {