test: Remove pure from the test suite

src/test/auxiliary/cci_class_cast.rs

@@ -18,7 +18,7 @@ pub mod kitty {
     }
 
     impl ToStr for cat {
-       pure fn to_str(&self) -> ~str { copy self.name }
+       fn to_str(&self) -> ~str { copy self.name }
     }
 
     priv impl cat {

src/test/auxiliary/crateresolve5-1.rs

@@ -25,11 +25,11 @@ pub enum e {
 
 pub fn nominal() -> e { e_val }
 
-pub pure fn nominal_eq(e1: e, e2: e) -> bool { true }
+pub fn nominal_eq(e1: e, e2: e) -> bool { true }
 
 impl Eq for e {
-    pure fn eq(&self, other: &e) -> bool { nominal_eq(*self, *other) }
-    pure fn ne(&self, other: &e) -> bool { !nominal_eq(*self, *other) }
+    fn eq(&self, other: &e) -> bool { nominal_eq(*self, *other) }
+    fn ne(&self, other: &e) -> bool { !nominal_eq(*self, *other) }
 }
 
 pub fn f() -> int { 10 }

src/test/auxiliary/crateresolve5-2.rs

@@ -23,12 +23,12 @@ pub enum e {
 }
 
 impl Eq for e {
-    pure fn eq(&self, other: &e) -> bool { !nominal_neq(*self, *other) }
-    pure fn ne(&self, other: &e) -> bool { nominal_neq(*self, *other) }
+    fn eq(&self, other: &e) -> bool { !nominal_neq(*self, *other) }
+    fn ne(&self, other: &e) -> bool { nominal_neq(*self, *other) }
 }
 
 pub fn nominal() -> e { e_val }
 
-pub pure fn nominal_neq(e1: e, e2: e) -> bool { false }
+pub fn nominal_neq(e1: e, e2: e) -> bool { false }
 
 pub fn f() -> int { 20 }

src/test/auxiliary/impl_privacy_xc_2.rs

@@ -7,8 +7,8 @@ pub struct Fish {
 mod unexported {
     use super::Fish;
     impl Eq for Fish {
-        pure fn eq(&self, _: &Fish) -> bool { true }
-        pure fn ne(&self, _: &Fish) -> bool { false }
+        fn eq(&self, _: &Fish) -> bool { true }
+        fn ne(&self, _: &Fish) -> bool { false }
     }
 }
 

src/test/auxiliary/static_fn_trait_xc_aux.rs

@@ -1,11 +1,11 @@
 pub mod num {
     pub trait Num2 {
-        pure fn from_int2(n: int) -> Self;
+        fn from_int2(n: int) -> Self;
     }
 }
 
 pub mod float {
     impl ::num::Num2 for float {
-        pure fn from_int2(n: int) -> float { return n as float;  }
+        fn from_int2(n: int) -> float { return n as float;  }
     }
 }

src/test/auxiliary/trait_inheritance_overloading_xc.rs

@@ -18,24 +18,24 @@ pub struct MyInt {
 }
 
 impl Add<MyInt, MyInt> for MyInt {
-    pure fn add(&self, other: &MyInt) -> MyInt { mi(self.val + other.val) }
+    fn add(&self, other: &MyInt) -> MyInt { mi(self.val + other.val) }
 }
 
 impl Sub<MyInt, MyInt> for MyInt {
-    pure fn sub(&self, other: &MyInt) -> MyInt { mi(self.val - other.val) }
+    fn sub(&self, other: &MyInt) -> MyInt { mi(self.val - other.val) }
 }
 
 impl Mul<MyInt, MyInt> for MyInt {
-    pure fn mul(&self, other: &MyInt) -> MyInt { mi(self.val * other.val) }
+    fn mul(&self, other: &MyInt) -> MyInt { mi(self.val * other.val) }
 }
 
 impl Eq for MyInt {
-    pure fn eq(&self, other: &MyInt) -> bool { self.val == other.val }
+    fn eq(&self, other: &MyInt) -> bool { self.val == other.val }
 
-    pure fn ne(&self, other: &MyInt) -> bool { !self.eq(other) }
+    fn ne(&self, other: &MyInt) -> bool { !self.eq(other) }
 }
 
 impl MyNum for MyInt;
 
-pure fn mi(v: int) -> MyInt { MyInt { val: v } }
+fn mi(v: int) -> MyInt { MyInt { val: v } }
 

src/test/bench/shootout-k-nucleotide-pipes.rs

@@ -27,14 +27,14 @@ fn sort_and_fmt(mm: HashMap<~[u8], uint>, total: uint) -> ~str {
       return (xx as float) * 100f / (yy as float);
    }
 
-   pure fn le_by_val<TT:Copy,UU:Copy + Ord>(kv0: &(TT,UU),
+   fn le_by_val<TT:Copy,UU:Copy + Ord>(kv0: &(TT,UU),
                                          kv1: &(TT,UU)) -> bool {
       let (_, v0) = *kv0;
       let (_, v1) = *kv1;
       return v0 >= v1;
    }
 
-   pure fn le_by_key<TT:Copy + Ord,UU:Copy>(kv0: &(TT,UU),
+   fn le_by_key<TT:Copy + Ord,UU:Copy>(kv0: &(TT,UU),
                                          kv1: &(TT,UU)) -> bool {
       let (k0, _) = *kv0;
       let (k1, _) = *kv1;

src/test/bench/shootout-mandelbrot.rs

@@ -33,7 +33,7 @@ struct cmplx {
 }
 
 impl ops::Mul<cmplx,cmplx> for cmplx {
-    pure fn mul(&self, x: &cmplx) -> cmplx {
+    fn mul(&self, x: &cmplx) -> cmplx {
         cmplx {
             re: self.re*(*x).re - self.im*(*x).im,
             im: self.re*(*x).im + self.im*(*x).re
@@ -42,7 +42,7 @@ impl ops::Mul<cmplx,cmplx> for cmplx {
 }
 
 impl ops::Add<cmplx,cmplx> for cmplx {
-    pure fn add(&self, x: &cmplx) -> cmplx {
+    fn add(&self, x: &cmplx) -> cmplx {
         cmplx {
             re: self.re + (*x).re,
             im: self.im + (*x).im
@@ -52,7 +52,7 @@ impl ops::Add<cmplx,cmplx> for cmplx {
 
 struct Line {i: uint, b: ~[u8]}
 
-pure fn cabs(x: cmplx) -> f64
+fn cabs(x: cmplx) -> f64
 {
     x.re*x.re + x.im*x.im
 }

src/test/compile-fail/auto-ref-slice-plus-ref.rs

@@ -20,9 +20,9 @@ fn main() {
 }
 
 trait MyIter {
-    pure fn test_mut(&mut self);
+    fn test_mut(&mut self);
 }
 
 impl MyIter for &'self [int] {
-    pure fn test_mut(&mut self) { }
+    fn test_mut(&mut self) { }
 }

src/test/compile-fail/borrowck-loan-in-overloaded-op.rs

@@ -13,7 +13,7 @@
 struct foo(~uint);
 
 impl Add<foo, foo> for foo {
-    pure fn add(f: &foo) -> foo {
+    fn add(f: &foo) -> foo {
         foo(~(**self + **(*f)))
     }
 }

src/test/compile-fail/borrowck-loan-rcvr-overloaded-op.rs

@@ -14,7 +14,7 @@ struct Point {
 }
 
 impl ops::Add<int,int> for Point {
-    pure fn add(&self, z: &int) -> int {
+    fn add(&self, z: &int) -> int {
         self.x + self.y + (*z)
     }
 }

src/test/compile-fail/borrowck-loan-rcvr.rs

@@ -13,7 +13,7 @@ struct point { x: int, y: int }
 trait methods {
     fn impurem(&self);
     fn blockm(&self, f: &fn());
-    pure fn purem(&self);
+    fn purem(&self);
 }
 
 impl methods for point {
@@ -22,7 +22,7 @@ impl methods for point {
 
     fn blockm(&self, f: &fn()) { f() }
 
-    pure fn purem(&self) {
+    fn purem(&self) {
     }
 }
 

src/test/compile-fail/issue-3344.rs

@@ -10,8 +10,8 @@
 
 struct thing(uint);
 impl cmp::Ord for thing { //~ ERROR missing method `gt`
-    pure fn lt(&self, other: &thing) -> bool { **self < **other }
-    pure fn le(&self, other: &thing) -> bool { **self < **other }
-    pure fn ge(&self, other: &thing) -> bool { **self < **other }
+    fn lt(&self, other: &thing) -> bool { **self < **other }
+    fn le(&self, other: &thing) -> bool { **self < **other }
+    fn ge(&self, other: &thing) -> bool { **self < **other }
 }
 fn main() {}

src/test/compile-fail/issue-3707.rs

@@ -14,10 +14,10 @@ struct Obj {
 }
 
 pub impl Obj {
-    pure fn boom() -> bool {
+    fn boom() -> bool {
         return 1+1 == 2
     }
-    pure fn chirp() {
+    fn chirp() {
         self.boom(); //~ ERROR wat
     }
 }

src/test/compile-fail/issue-3820.rs

@@ -14,7 +14,7 @@ struct Thing {
 }
 
 impl Mul<int, Thing>*/ for Thing/* { //~ ERROR Look ma, no Mul!
-    pure fn mul(c: &int) -> Thing {
+    fn mul(c: &int) -> Thing {
         Thing {x: self.x * *c}
     }
 }

src/test/compile-fail/issue-3953.rs

@@ -25,8 +25,8 @@ struct Lol(int);
 impl Hahaha for Lol { }
 
 impl Eq for Lol {
-    pure fn eq(&self, other: &Lol) -> bool { **self != **other }
-    pure fn ne(&self, other: &Lol) -> bool { **self == **other }
+    fn eq(&self, other: &Lol) -> bool { **self != **other }
+    fn ne(&self, other: &Lol) -> bool { **self == **other }
 }
 
 fn main() {

src/test/compile-fail/issue-3973.rs

@@ -20,7 +20,7 @@ impl ToStr for Point { //~ ERROR implements a method not defined in the trait
         Point { x: x, y: y }
     }
 
-    pure fn to_str(&self) -> ~str {
+    fn to_str(&self) -> ~str {
         fmt!("(%f, %f)", self.x, self.y)
     }
 }

src/test/compile-fail/missing-derivable-attr.rs

@@ -9,7 +9,7 @@
 // except according to those terms.
 
 trait MyEq {
-    pure fn eq(&self, other: &Self) -> bool;
+    fn eq(&self, other: &Self) -> bool;
 }
 
 struct A {
@@ -17,7 +17,7 @@ struct A {
 }
 
 impl MyEq for int {
-    pure fn eq(&self, other: &int) -> bool { *self == *other }
+    fn eq(&self, other: &int) -> bool { *self == *other }
 }
 
 impl MyEq for A;  //~ ERROR missing method

src/test/run-fail/die-macro-pure.rs

@@ -1,6 +1,6 @@
 // error-pattern:test
 
-pure fn f() {
+fn f() {
     fail!(~"test");
 }
 

src/test/run-fail/if-check-fail.rs

@@ -9,7 +9,7 @@
 // except according to those terms.
 
 // error-pattern:Number is odd
-pure fn even(x: uint) -> bool {
+fn even(x: uint) -> bool {
     if x < 2u {
         return false;
     } else if x == 2u { return true; } else { return even(x - 2u); }

src/test/run-pass/auto-encode.rs

@@ -60,7 +60,7 @@ enum Expr {
 }
 
 impl cmp::Eq for Expr {
-    pure fn eq(&self, other: &Expr) -> bool {
+    fn eq(&self, other: &Expr) -> bool {
         match *self {
             Val(e0a) => {
                 match *other {
@@ -82,18 +82,18 @@ impl cmp::Eq for Expr {
             }
         }
     }
-    pure fn ne(&self, other: &Expr) -> bool { !(*self).eq(other) }
+    fn ne(&self, other: &Expr) -> bool { !(*self).eq(other) }
 }
 
 impl cmp::Eq for Point {
-    pure fn eq(&self, other: &Point) -> bool {
+    fn eq(&self, other: &Point) -> bool {
         self.x == other.x && self.y == other.y
     }
-    pure fn ne(&self, other: &Point) -> bool { !(*self).eq(other) }
+    fn ne(&self, other: &Point) -> bool { !(*self).eq(other) }
 }
 
 impl<T:cmp::Eq> cmp::Eq for Quark<T> {
-    pure fn eq(&self, other: &Quark<T>) -> bool {
+    fn eq(&self, other: &Quark<T>) -> bool {
         match *self {
             Top(ref q) => {
                 match *other {
@@ -109,14 +109,14 @@ impl<T:cmp::Eq> cmp::Eq for Quark<T> {
             },
         }
     }
-    pure fn ne(&self, other: &Quark<T>) -> bool { !(*self).eq(other) }
+    fn ne(&self, other: &Quark<T>) -> bool { !(*self).eq(other) }
 }
 
 impl cmp::Eq for CLike {
-    pure fn eq(&self, other: &CLike) -> bool {
+    fn eq(&self, other: &CLike) -> bool {
         (*self) as int == *other as int
     }
-    pure fn ne(&self, other: &CLike) -> bool { !self.eq(other) }
+    fn ne(&self, other: &CLike) -> bool { !self.eq(other) }
 }
 
 #[auto_encode]

src/test/run-pass/auto-ref-slice-plus-ref.rs

@@ -12,18 +12,18 @@
 // and also references them to create the &self pointer
 
 trait MyIter {
-    pure fn test_imm(&self);
-    pure fn test_const(&const self);
+    fn test_imm(&self);
+    fn test_const(&const self);
 }
 
 impl MyIter for &'self [int] {
-    pure fn test_imm(&self) { fail_unless!(self[0] == 1) }
-    pure fn test_const(&const self) { fail_unless!(self[0] == 1) }
+    fn test_imm(&self) { fail_unless!(self[0] == 1) }
+    fn test_const(&const self) { fail_unless!(self[0] == 1) }
 }
 
 impl MyIter for &'self str {
-    pure fn test_imm(&self) { fail_unless!(*self == "test") }
-    pure fn test_const(&const self) { fail_unless!(*self == "test") }
+    fn test_imm(&self) { fail_unless!(*self == "test") }
+    fn test_const(&const self) { fail_unless!(*self == "test") }
 }
 
 pub fn main() {

src/test/run-pass/class-impl-very-parameterized-trait.rs

@@ -16,10 +16,10 @@ use core::iter::BaseIter;
 enum cat_type { tuxedo, tabby, tortoiseshell }
 
 impl cmp::Eq for cat_type {
-    pure fn eq(&self, other: &cat_type) -> bool {
+    fn eq(&self, other: &cat_type) -> bool {
         ((*self) as uint) == ((*other) as uint)
     }
-    pure fn ne(&self, other: &cat_type) -> bool { !(*self).eq(other) }
+    fn ne(&self, other: &cat_type) -> bool { !(*self).eq(other) }
 }
 
 // Very silly -- this just returns the value of the name field
@@ -50,7 +50,7 @@ pub impl<T> cat<T> {
 }
 
 impl<T> BaseIter<(int, &'self T)> for cat<T> {
-    pure fn each(&self, f: &fn(&(int, &'self T)) -> bool) {
+    fn each(&self, f: &fn(&(int, &'self T)) -> bool) {
         let mut n = int::abs(self.meows);
         while n > 0 {
             if !f(&(n, &self.name)) { break; }
@@ -58,12 +58,12 @@ impl<T> BaseIter<(int, &'self T)> for cat<T> {
         }
     }
 
-    pure fn size_hint(&self) -> Option<uint> { Some(self.len()) }
+    fn size_hint(&self) -> Option<uint> { Some(self.len()) }
 }
 
 impl<T> Container for cat<T> {
-    pure fn len(&const self) -> uint { self.meows as uint }
-    pure fn is_empty(&const self) -> bool { self.meows == 0 }
+    fn len(&const self) -> uint { self.meows as uint }
+    fn is_empty(&const self) -> bool { self.meows == 0 }
 }
 
 impl<T> Mutable for cat<T> {
@@ -71,13 +71,13 @@ impl<T> Mutable for cat<T> {
 }
 
 impl<T> Map<int, T> for cat<T> {
-    pure fn contains_key(&self, k: &int) -> bool { *k <= self.meows }
+    fn contains_key(&self, k: &int) -> bool { *k <= self.meows }
 
-    pure fn each_key(&self, f: &fn(v: &int) -> bool) {
+    fn each_key(&self, f: &fn(v: &int) -> bool) {
         for self.each |&(k, _)| { if !f(&k) { break; } loop;};
     }
 
-    pure fn each_value(&self, f: &fn(v: &T) -> bool) {
+    fn each_value(&self, f: &fn(v: &T) -> bool) {
         for self.each |&(_, v)| { if !f(v) { break; } loop;};
     }
 
@@ -90,7 +90,7 @@ impl<T> Map<int, T> for cat<T> {
         true
     }
 
-    pure fn find(&self, k: &int) -> Option<&'self T> {
+    fn find(&self, k: &int) -> Option<&'self T> {
         if *k <= self.meows {
             Some(&self.name)
         } else {
@@ -108,14 +108,14 @@ impl<T> Map<int, T> for cat<T> {
 }
 
 pub impl<T> cat<T> {
-    pure fn get(&self, k: &int) -> &'self T {
+    fn get(&self, k: &int) -> &'self T {
         match self.find(k) {
           Some(v) => { v }
           None    => { fail!(~"epic fail"); }
         }
     }
 
-    pure fn new(in_x: int, in_y: int, in_name: T) -> cat<T> {
+    fn new(in_x: int, in_y: int, in_name: T) -> cat<T> {
         cat{meows: in_x, how_hungry: in_y, name: in_name }
     }
 }

src/test/run-pass/class-separate-impl.rs

@@ -51,7 +51,7 @@ fn cat(in_x : uint, in_y : int, in_name: ~str) -> cat {
 }
 
 impl ToStr for cat {
-    pure fn to_str(&self) -> ~str {
+    fn to_str(&self) -> ~str {
         // FIXME #5384: this unsafe block is to work around purity
         unsafe {
             self.name.clone()

src/test/run-pass/coerce-reborrow-imm-ptr-arg.rs

@@ -1,4 +1,4 @@
-pure fn negate(x: &int) -> int {
+fn negate(x: &int) -> int {
     -*x
 }
 

src/test/run-pass/coerce-reborrow-imm-ptr-rcvr.rs

@@ -3,7 +3,7 @@ struct SpeechMaker {
 }
 
 pub impl SpeechMaker {
-    pure fn how_many(&const self) -> uint { self.speeches }
+    fn how_many(&const self) -> uint { self.speeches }
 }
 
 fn foo(speaker: &const SpeechMaker) -> uint {

src/test/run-pass/coerce-reborrow-imm-vec-arg.rs

@@ -1,6 +1,6 @@
 // xfail-test
 
-pure fn sum(x: &[int]) -> int {
+fn sum(x: &[int]) -> int {
     let mut sum = 0;
     for x.each |y| { sum += *y; }
     return sum;

src/test/run-pass/coherence-impl-in-fn.rs

@@ -11,9 +11,9 @@
 pub fn main() {
     enum x { foo }
     impl ::core::cmp::Eq for x {
-        pure fn eq(&self, other: &x) -> bool {
+        fn eq(&self, other: &x) -> bool {
             (*self) as int == (*other) as int
         }
-        pure fn ne(&self, other: &x) -> bool { !(*self).eq(other) }
+        fn ne(&self, other: &x) -> bool { !(*self).eq(other) }
     }
 }

src/test/run-pass/const-struct.rs

@@ -12,12 +12,12 @@
 struct foo { a: int, b: int, c: int }
 
 impl cmp::Eq for foo {
-    pure fn eq(&self, other: &foo) -> bool {
+    fn eq(&self, other: &foo) -> bool {
         (*self).a == (*other).a &&
         (*self).b == (*other).b &&
         (*self).c == (*other).c
     }
-    pure fn ne(&self, other: &foo) -> bool { !(*self).eq(other) }
+    fn ne(&self, other: &foo) -> bool { !(*self).eq(other) }
 }
 
 const x : foo = foo { a:1, b:2, c: 3 };

src/test/run-pass/do-pure.rs

@@ -8,10 +8,10 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-pure fn f(f: &fn()) {
+fn f(f: &fn()) {
 }
 
-pure fn g() {
+fn g() {
     // `f || { }` is considered pure, so `do f { }` should be too
     do f { }
 }

src/test/run-pass/empty-tag.rs

@@ -11,10 +11,10 @@
 enum chan { chan_t, }
 
 impl cmp::Eq for chan {
-    pure fn eq(&self, other: &chan) -> bool {
+    fn eq(&self, other: &chan) -> bool {
         ((*self) as uint) == ((*other) as uint)
     }
-    pure fn ne(&self, other: &chan) -> bool { !(*self).eq(other) }
+    fn ne(&self, other: &chan) -> bool { !(*self).eq(other) }
 }
 
 fn wrapper3(i: chan) {

src/test/run-pass/explicit-self-generic.rs

@@ -15,8 +15,8 @@ extern mod std;
  *
  * The hash should concentrate entropy in the lower bits.
  */
-type HashFn<K> = ~pure fn(K) -> uint;
-type EqFn<K> = ~pure fn(K, K) -> bool;
+type HashFn<K> = ~fn(K) -> uint;
+type EqFn<K> = ~fn(K, K) -> bool;
 
 struct LM { resize_at: uint, size: uint }
 

src/test/run-pass/export-unexported-dep.rs

@@ -16,10 +16,10 @@ mod foo {
     enum t { t1, t2, }
 
     impl cmp::Eq for t {
-        pure fn eq(&self, other: &t) -> bool {
+        fn eq(&self, other: &t) -> bool {
             ((*self) as uint) == ((*other) as uint)
         }
-        pure fn ne(&self, other: &t) -> bool { !(*self).eq(other) }
+        fn ne(&self, other: &t) -> bool { !(*self).eq(other) }
     }
 
     pub fn f() -> t { return t1; }

src/test/run-pass/expr-alt-struct.rs

@@ -24,10 +24,10 @@ fn test_rec() {
 enum mood { happy, sad, }
 
 impl cmp::Eq for mood {
-    pure fn eq(&self, other: &mood) -> bool {
+    fn eq(&self, other: &mood) -> bool {
         ((*self) as uint) == ((*other) as uint)
     }
-    pure fn ne(&self, other: &mood) -> bool { !(*self).eq(other) }
+    fn ne(&self, other: &mood) -> bool { !(*self).eq(other) }
 }
 
 fn test_tag() {

src/test/run-pass/expr-if-struct.rs

@@ -25,10 +25,10 @@ fn test_rec() {
 enum mood { happy, sad, }
 
 impl cmp::Eq for mood {
-    pure fn eq(&self, other: &mood) -> bool {
+    fn eq(&self, other: &mood) -> bool {
         ((*self) as uint) == ((*other) as uint)
     }
-    pure fn ne(&self, other: &mood) -> bool { !(*self).eq(other) }
+    fn ne(&self, other: &mood) -> bool { !(*self).eq(other) }
 }
 
 fn test_tag() {

src/test/run-pass/if-check.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-pure fn even(x: uint) -> bool {
+fn even(x: uint) -> bool {
     if x < 2u {
         return false;
     } else if x == 2u { return true; } else { return even(x - 2u); }

src/test/run-pass/issue-2904.rs

@@ -28,7 +28,7 @@ enum square {
 }
 
 impl to_str::ToStr for square {
-    pure fn to_str(&self) -> ~str {
+    fn to_str(&self) -> ~str {
         match *self {
           bot => { ~"R" }
           wall => { ~"#" }

src/test/run-pass/issue-3149.rs

@@ -8,11 +8,11 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-pure fn Matrix4<T:Copy>(m11: T, m12: T, m13: T, m14: T,
-                        m21: T, m22: T, m23: T, m24: T,
-                        m31: T, m32: T, m33: T, m34: T,
-                        m41: T, m42: T, m43: T, m44: T)
-                     -> Matrix4<T> {
+fn Matrix4<T:Copy>(m11: T, m12: T, m13: T, m14: T,
+                   m21: T, m22: T, m23: T, m24: T,
+                   m31: T, m32: T, m33: T, m34: T,
+                   m41: T, m42: T, m43: T, m44: T)
+                -> Matrix4<T> {
 
     Matrix4 {
         m11: m11, m12: m12, m13: m13, m14: m14,

src/test/run-pass/issue-3480.rs

@@ -13,13 +13,12 @@ type IMap<K:Copy,V:Copy> = ~[(K, V)];
 
 trait ImmutableMap<K:Copy,V:Copy>
 {
-    pure fn contains_key(key: K) -> bool;
+    fn contains_key(key: K) -> bool;
 }
 
 impl<K:Copy,V:Copy> IMap<K, V> : ImmutableMap<K, V>
 {
-    pure fn contains_key(key: K) -> bool
-    {
+    fn contains_key(key: K) -> bool {
         vec::find(self, |e| {e.first() == key}).is_some()
     }
 }

src/test/run-pass/issue-3563-3.rs

@@ -111,8 +111,7 @@ impl AsciiArt
 // Allows AsciiArt to be converted to a string using the libcore ToStr trait.
 // Note that the %s fmt! specifier will not call this automatically.
 impl ToStr for AsciiArt {
-    pure fn to_str(&self) -> ~str
-    {
+    fn to_str(&self) -> ~str {
         // Convert each line into a string.
         let lines = do self.lines.map |line| {str::from_chars(*line)};
 

src/test/run-pass/issue-3874.rs

@@ -11,7 +11,7 @@
 // xfail-test
 enum PureCounter { PureCounter(uint) }
 
-pure fn each(self: PureCounter, blk: &fn(v: &uint)) {
+fn each(self: PureCounter, blk: &fn(v: &uint)) {
     let PureCounter(ref x) = self;
     blk(x);
 }

src/test/run-pass/mod-merge-hack-template.rs

@@ -13,4 +13,4 @@
 use T = self::inst::T;
 
 pub const bits: uint = inst::bits;
-pub pure fn min(x: T, y: T) -> T { if x < y { x } else { y } }
+pub fn min(x: T, y: T) -> T { if x < y { x } else { y } }

src/test/run-pass/new-impl-syntax.rs

@@ -4,7 +4,7 @@ struct Thingy {
 }
 
 impl ToStr for Thingy {
-    pure fn to_str(&self) -> ~str {
+    fn to_str(&self) -> ~str {
         fmt!("{ x: %d, y: %d }", self.x, self.y)
     }
 }
@@ -14,7 +14,7 @@ struct PolymorphicThingy<T> {
 }
 
 impl<T:ToStr> ToStr for PolymorphicThingy<T> {
-    pure fn to_str(&self) -> ~str {
+    fn to_str(&self) -> ~str {
         self.x.to_str()
     }
 }

src/test/run-pass/non-boolean-pure-fns.rs

@@ -14,13 +14,13 @@ extern mod std;
 
 use std::list::*;
 
-pure fn pure_length_go<T:Copy>(ls: @List<T>, acc: uint) -> uint {
+fn pure_length_go<T:Copy>(ls: @List<T>, acc: uint) -> uint {
     match *ls { Nil => { acc } Cons(_, tl) => { pure_length_go(tl, acc + 1u) } }
 }
 
-pure fn pure_length<T:Copy>(ls: @List<T>) -> uint { pure_length_go(ls, 0u) }
+fn pure_length<T:Copy>(ls: @List<T>) -> uint { pure_length_go(ls, 0u) }
 
-pure fn nonempty_list<T:Copy>(ls: @List<T>) -> bool { pure_length(ls) > 0u }
+fn nonempty_list<T:Copy>(ls: @List<T>) -> bool { pure_length(ls) > 0u }
 
 fn safe_head<T:Copy>(ls: @List<T>) -> T {
     fail_unless!(!is_empty(ls));

src/test/run-pass/operator-overloading.rs

@@ -16,40 +16,40 @@ struct Point {
 }
 
 impl ops::Add<Point,Point> for Point {
-    pure fn add(&self, other: &Point) -> Point {
+    fn add(&self, other: &Point) -> Point {
         Point {x: self.x + (*other).x, y: self.y + (*other).y}
     }
 }
 
 impl ops::Sub<Point,Point> for Point {
-    pure fn sub(&self, other: &Point) -> Point {
+    fn sub(&self, other: &Point) -> Point {
         Point {x: self.x - (*other).x, y: self.y - (*other).y}
     }
 }
 
 impl ops::Neg<Point> for Point {
-    pure fn neg(&self) -> Point {
+    fn neg(&self) -> Point {
         Point {x: -self.x, y: -self.y}
     }
 }
 
 impl ops::Not<Point> for Point {
-    pure fn not(&self) -> Point {
+    fn not(&self) -> Point {
         Point {x: !self.x, y: !self.y }
     }
 }
 
 impl ops::Index<bool,int> for Point {
-    pure fn index(&self, +x: bool) -> int {
+    fn index(&self, +x: bool) -> int {
         if x { self.x } else { self.y }
     }
 }
 
 impl cmp::Eq for Point {
-    pure fn eq(&self, other: &Point) -> bool {
+    fn eq(&self, other: &Point) -> bool {
         (*self).x == (*other).x && (*self).y == (*other).y
     }
-    pure fn ne(&self, other: &Point) -> bool { !(*self).eq(other) }
+    fn ne(&self, other: &Point) -> bool { !(*self).eq(other) }
 }
 
 pub fn main() {

src/test/run-pass/pred-not-bool.rs

@@ -11,6 +11,6 @@
 // this checks that a pred with a non-bool return
 // type is rejected, even if the pred is never used
 
-pure fn bad(a: int) -> int { return 37; } //~ ERROR Non-boolean return type
+fn bad(a: int) -> int { return 37; } //~ ERROR Non-boolean return type
 
 pub fn main() { }

src/test/run-pass/pure-fmt.rs

@@ -13,7 +13,7 @@
 struct Big { b: @~str, c: uint, d: int, e: char,
             f: float, g: bool }
 
-pure fn foo() {
+fn foo() {
     let a = Big {
         b: @~"hi",
         c: 0,

src/test/run-pass/pure-sum.rs

@@ -8,9 +8,9 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-// Check that pure functions can modify local state.
+// Check that functions can modify local state.
 
-pure fn sums_to(v: ~[int], sum: int) -> bool {
+fn sums_to(v: ~[int], sum: int) -> bool {
     let mut i = 0u, sum0 = 0;
     while i < v.len() {
         sum0 += v[i];
@@ -19,7 +19,7 @@ pure fn sums_to(v: ~[int], sum: int) -> bool {
     return sum0 == sum;
 }
 
-pure fn sums_to_using_uniq(v: ~[int], sum: int) -> bool {
+fn sums_to_using_uniq(v: ~[int], sum: int) -> bool {
     let mut i = 0u, sum0 = ~0;
     while i < v.len() {
         *sum0 += v[i];
@@ -28,7 +28,7 @@ pure fn sums_to_using_uniq(v: ~[int], sum: int) -> bool {
     return *sum0 == sum;
 }
 
-pure fn sums_to_using_rec(v: ~[int], sum: int) -> bool {
+fn sums_to_using_rec(v: ~[int], sum: int) -> bool {
     let mut i = 0u, sum0 = F {f: 0};
     while i < v.len() {
         sum0.f += v[i];
@@ -39,7 +39,7 @@ pure fn sums_to_using_rec(v: ~[int], sum: int) -> bool {
 
 struct F<T> { f: T }
 
-pure fn sums_to_using_uniq_rec(v: ~[int], sum: int) -> bool {
+fn sums_to_using_uniq_rec(v: ~[int], sum: int) -> bool {
     let mut i = 0u, sum0 = F {f: ~0};
     while i < v.len() {
         *sum0.f += v[i];

src/test/run-pass/purity-infer.rs

@@ -9,7 +9,7 @@
 // except according to those terms.
 
 
-fn something(f: &pure fn()) { f(); }
+fn something(f: &fn()) { f(); }
 pub fn main() {
     something(|| error!("hi!") );
 }

src/test/run-pass/static-method-test.rs

@@ -35,28 +35,25 @@ impl bool_like for int {
 
 // A trait for sequences that can be constructed imperatively.
 trait buildable<A> {
-     pure fn build_sized(size: uint,
-                         builder: &fn(push: &pure fn(+v: A))) -> Self;
+     fn build_sized(size: uint, builder: &fn(push: &fn(+v: A))) -> Self;
 }
 
 
 impl<A> buildable<A> for @[A] {
     #[inline(always)]
-     pure fn build_sized(size: uint,
-                         builder: &fn(push: &pure fn(+v: A))) -> @[A] {
+     fn build_sized(size: uint, builder: &fn(push: &fn(+v: A))) -> @[A] {
          at_vec::build_sized(size, builder)
      }
 }
 impl<A> buildable<A> for ~[A] {
     #[inline(always)]
-     pure fn build_sized(size: uint,
-                         builder: &fn(push: &pure fn(+v: A))) -> ~[A] {
+     fn build_sized(size: uint, builder: &fn(push: &fn(+v: A))) -> ~[A] {
          vec::build_sized(size, builder)
      }
 }
 
 #[inline(always)]
-pure fn build<A, B: buildable<A>>(builder: &fn(push: &pure fn(+v: A))) -> B {
+fn build<A, B: buildable<A>>(builder: &fn(push: &fn(+v: A))) -> B {
     buildable::build_sized(4, builder)
 }
 

src/test/run-pass/static-methods-in-traits2.rs

@@ -1,17 +1,17 @@
 pub trait Number: NumConv {
-    pure fn from<T:Number>(n: T) -> Self;
+    fn from<T:Number>(n: T) -> Self;
 }
 
 impl Number for float {
-    pure fn from<T:Number>(n: T) -> float { n.to_float() }
+    fn from<T:Number>(n: T) -> float { n.to_float() }
 }
 
 pub trait NumConv {
-    pure fn to_float(&self) -> float;
+    fn to_float(&self) -> float;
 }
 
 impl NumConv for float {
-    pure fn to_float(&self) -> float { *self }
+    fn to_float(&self) -> float { *self }
 }
 
 pub fn main() {

src/test/run-pass/structured-compare.rs

@@ -13,10 +13,10 @@
 enum foo { large, small, }
 
 impl cmp::Eq for foo {
-    pure fn eq(&self, other: &foo) -> bool {
+    fn eq(&self, other: &foo) -> bool {
         ((*self) as uint) == ((*other) as uint)
     }
-    pure fn ne(&self, other: &foo) -> bool { !(*self).eq(other) }
+    fn ne(&self, other: &foo) -> bool { !(*self).eq(other) }
 }
 
 pub fn main() {

src/test/run-pass/tag-variant-disr-val.rs

@@ -20,10 +20,10 @@ enum color {
 }
 
 impl cmp::Eq for color {
-    pure fn eq(&self, other: &color) -> bool {
+    fn eq(&self, other: &color) -> bool {
         ((*self) as uint) == ((*other) as uint)
     }
-    pure fn ne(&self, other: &color) -> bool { !(*self).eq(other) }
+    fn ne(&self, other: &color) -> bool { !(*self).eq(other) }
 }
 
 pub fn main() {

src/test/run-pass/tag.rs

@@ -15,7 +15,7 @@
 enum colour { red(int, int), green, }
 
 impl cmp::Eq for colour {
-    pure fn eq(&self, other: &colour) -> bool {
+    fn eq(&self, other: &colour) -> bool {
         match *self {
             red(a0, b0) => {
                 match (*other) {
@@ -31,7 +31,7 @@ impl cmp::Eq for colour {
             }
         }
     }
-    pure fn ne(&self, other: &colour) -> bool { !(*self).eq(other) }
+    fn ne(&self, other: &colour) -> bool { !(*self).eq(other) }
 }
 
 fn f() { let x = red(1, 2); let y = green; fail_unless!((x != y)); }

src/test/run-pass/task-comm-16.rs

@@ -52,7 +52,7 @@ enum t {
 }
 
 impl cmp::Eq for t {
-    pure fn eq(&self, other: &t) -> bool {
+    fn eq(&self, other: &t) -> bool {
         match *self {
             tag1 => {
                 match (*other) {
@@ -75,7 +75,7 @@ impl cmp::Eq for t {
             }
         }
     }
-    pure fn ne(&self, other: &t) -> bool { !(*self).eq(other) }
+    fn ne(&self, other: &t) -> bool { !(*self).eq(other) }
 }
 
 fn test_tag() {

src/test/run-pass/trait-inheritance-overloading-simple.rs

@@ -15,8 +15,8 @@ trait MyNum : Eq { }
 struct MyInt { val: int }
 
 impl Eq for MyInt {
-    pure fn eq(&self, other: &MyInt) -> bool { self.val == other.val }
-    pure fn ne(&self, other: &MyInt) -> bool { !self.eq(other) }
+    fn eq(&self, other: &MyInt) -> bool { self.val == other.val }
+    fn ne(&self, other: &MyInt) -> bool { !self.eq(other) }
 }
 
 impl MyNum for MyInt;
@@ -25,7 +25,7 @@ fn f<T:MyNum>(x: T, y: T) -> bool {
     return x == y;
 }
 
-pure fn mi(v: int) -> MyInt { MyInt { val: v } }
+fn mi(v: int) -> MyInt { MyInt { val: v } }
 
 pub fn main() {
     let (x, y, z) = (mi(3), mi(5), mi(3));

src/test/run-pass/trait-inheritance-overloading-xc-exe.rs

@@ -18,7 +18,7 @@ fn f<T:Copy + MyNum>(x: T, y: T) -> (T, T, T) {
     return (x + y, x - y, x * y);
 }
 
-pure fn mi(v: int) -> MyInt { MyInt { val: v } }
+fn mi(v: int) -> MyInt { MyInt { val: v } }
 
 pub fn main() {
     let (x, y) = (mi(3), mi(5));

src/test/run-pass/trait-inheritance-overloading.rs

@@ -15,20 +15,20 @@ trait MyNum : Add<Self,Self> + Sub<Self,Self> + Mul<Self,Self> + Eq { }
 struct MyInt { val: int }
 
 impl Add<MyInt, MyInt> for MyInt {
-    pure fn add(&self, other: &MyInt) -> MyInt { mi(self.val + other.val) }
+    fn add(&self, other: &MyInt) -> MyInt { mi(self.val + other.val) }
 }
 
 impl Sub<MyInt, MyInt> for MyInt {
-    pure fn sub(&self, other: &MyInt) -> MyInt { mi(self.val - other.val) }
+    fn sub(&self, other: &MyInt) -> MyInt { mi(self.val - other.val) }
 }
 
 impl Mul<MyInt, MyInt> for MyInt {
-    pure fn mul(&self, other: &MyInt) -> MyInt { mi(self.val * other.val) }
+    fn mul(&self, other: &MyInt) -> MyInt { mi(self.val * other.val) }
 }
 
 impl Eq for MyInt {
-    pure fn eq(&self, other: &MyInt) -> bool { self.val == other.val }
-    pure fn ne(&self, other: &MyInt) -> bool { !self.eq(other) }
+    fn eq(&self, other: &MyInt) -> bool { self.val == other.val }
+    fn ne(&self, other: &MyInt) -> bool { !self.eq(other) }
 }
 
 impl MyNum for MyInt;
@@ -37,7 +37,7 @@ fn f<T:Copy + MyNum>(x: T, y: T) -> (T, T, T) {
     return (x + y, x - y, x * y);
 }
 
-pure fn mi(v: int) -> MyInt { MyInt { val: v } }
+fn mi(v: int) -> MyInt { MyInt { val: v } }
 
 pub fn main() {
     let (x, y) = (mi(3), mi(5));

src/test/run-pass/trait-inheritance-subst.rs

@@ -9,7 +9,7 @@
 // except according to those terms.
 
 pub trait Add<RHS,Result> {
-    pure fn add(&self, rhs: &RHS) -> Result;
+    fn add(&self, rhs: &RHS) -> Result;
 }
 
 trait MyNum : Add<Self,Self> { }
@@ -17,7 +17,7 @@ trait MyNum : Add<Self,Self> { }
 struct MyInt { val: int }
 
 impl Add<MyInt, MyInt> for MyInt {
-    pure fn add(&self, other: &MyInt) -> MyInt { mi(self.val + other.val) }
+    fn add(&self, other: &MyInt) -> MyInt { mi(self.val + other.val) }
 }
 
 impl MyNum for MyInt;
@@ -26,7 +26,7 @@ fn f<T:MyNum>(x: T, y: T) -> T {
     return x.add(&y);
 }
 
-pure fn mi(v: int) -> MyInt { MyInt { val: v } }
+fn mi(v: int) -> MyInt { MyInt { val: v } }
 
 pub fn main() {
     let (x, y) = (mi(3), mi(5));

src/test/run-pass/trait-static-method-overwriting.rs

@@ -12,7 +12,7 @@
 
 mod base {
     pub trait HasNew<T> {
-        pure fn new() -> T;
+        fn new() -> T;
     }
 
     pub struct Foo {
@@ -20,7 +20,7 @@ mod base {
     }
 
     impl ::base::HasNew<Foo> for Foo {
-        pure fn new() -> Foo {
+        fn new() -> Foo {
 			unsafe { io::println("Foo"); }
             Foo { dummy: () }
         }
@@ -31,7 +31,7 @@ mod base {
     }
 
     impl ::base::HasNew<Bar> for Bar {
-        pure fn new() -> Bar {
+        fn new() -> Bar {
 			unsafe { io::println("Bar"); }
             Bar { dummy: () }
         }

src/test/run-pass/tstate-loop-break.rs

@@ -10,7 +10,7 @@
 
 // xfail-test
 
-pure fn is_even(i: int) -> bool { (i%2) == 0 }
+fn is_even(i: int) -> bool { (i%2) == 0 }
 fn even(i: int) : is_even(i) -> int { i }
 
 fn test() {

src/test/run-pass/weird-exprs.rs

@@ -56,7 +56,7 @@ fn notsure() {
 }
 
 fn canttouchthis() -> uint {
-    pure fn p() -> bool { true }
+    fn p() -> bool { true }
     let _a = (fail_unless!((true)) == (fail_unless!(p())));
     let _c = (fail_unless!((p())) == ());
     let _b: bool = (debug!("%d", 0) == (return 0u));