Add type suffixes where necessary

cat/cat.rs

@@ -177,7 +177,7 @@ fn write_bytes(files: Vec<String>, number: NumberingMode, squeeze_blank: bool,
         };
 
         // Flush all 1024 iterations.
-        let mut flush_counter = range(0, 1024);
+        let mut flush_counter = range(0u, 1024);
 
         let mut in_buf  = [0, .. 1024 * 32];
         let mut out_buf = [0, .. 1024 * 64];
@@ -191,7 +191,7 @@ fn write_bytes(files: Vec<String>, number: NumberingMode, squeeze_blank: bool,
             for &byte in in_buf.slice_to(n).iter() {
                 if flush_counter.next().is_none() {
                     writer.possibly_flush();
-                    flush_counter = range(0, 1024);
+                    flush_counter = range(0u, 1024);
                 }
                 if byte == '\n' as u8 {
                     if !at_line_start || !squeeze_blank {

cksum/cksum.rs

@@ -25,7 +25,7 @@ static VERSION : &'static str = "1.0.0";
 fn crc_update(mut crc: u32, input: u8) -> u32 {
     crc ^= input as u32 << 24;
 
-    for _ in range(0, 8) {
+    for _ in range(0u, 8) {
         if crc & 0x80000000 != 0 {
             crc <<= 1;
             crc ^= 0x04c11db7;

echo/echo.rs

@@ -60,7 +60,7 @@ fn convert_str(string: &str, index: uint, base: uint) -> (char, uint) {
     };
 
     let mut bytes = vec!();
-    for offset in range(0, max_digits) {
+    for offset in range(0u, max_digits) {
         if string.len() <= index + offset as uint {
             break;
         }

hashsum/hashsum.rs

@@ -162,8 +162,8 @@ fn usage(program: &str, binary_name: &str, opts: &[getopts::OptGroup]) {
 }
 
 fn hashsum(algoname: &str, mut digest: Box<Digest>, files: Vec<String>, binary: bool, check: bool, tag: bool, status: bool, quiet: bool, strict: bool, warn: bool) -> Result<(), int> {
-    let mut bad_format = 0;
-    let mut failed = 0;
+    let mut bad_format = 0u;
+    let mut failed = 0u;
     let binary_marker = if binary {
         "*"
     } else {

nl/nl.rs

@@ -170,7 +170,7 @@ fn nl<T: Reader> (reader: &mut BufferedReader<T>, settings: &Settings) {
     let line_no_width_initial = line_no_width;
     // Stores the smallest integer with one more digit than line_no, so that
     // when line_no >= line_no_threshold, we need to use one more digit.
-    let mut line_no_threshold = std::num::pow(10, line_no_width) as u64;
+    let mut line_no_threshold = std::num::pow(10u64, line_no_width);
     let mut empty_line_count: u64 = 0;
     let fill_char = match settings.number_format {
         RightZero => '0',
@@ -232,7 +232,7 @@ fn nl<T: Reader> (reader: &mut BufferedReader<T>, settings: &Settings) {
                     if settings.renumber {
                         line_no = settings.starting_line_number;
                         line_no_width = line_no_width_initial;
-                        line_no_threshold = std::num::pow(10, line_no_width) as u64;
+                        line_no_threshold = std::num::pow(10u64, line_no_width);
                     }
                     &settings.header_numbering
                 },