updates to io.sl

test_read_file.sl

@@ -2,9 +2,8 @@ import stdlib/stdlib.sl
 import stdlib/io.sl
 
 : main
-    "/etc/hostname" # (len addr)
-    swap                      # (addr len)
-    read_file                 # (file_len file_addr)
+    "/etc/hostname" # (addr len)
+    read_file                 # (file_addr file_len)
     dup 0 > if                # if file_len > 0, success
         write_buf             # print file contents (file_len file_addr)
         0
@@ -13,13 +12,13 @@ import stdlib/io.sl
     dup -2 == if              # open() failed
         drop
         "open() failed: errno=" puts
-        swap puts
+        swap puti cr
         exit
     then
     dup -1 == if              # fstat() failed
         drop
         "fstat() failed: errno=" puts
-        swap puts
+        swap puti cr
         exit
     then
     dup -3 == if              # mmap() failed