diff --git a/src/test/bench/core-uint-to-str.rs b/src/test/bench/core-uint-to-str.rs
index a711ae5dd46..44211aad3f3 100644
--- a/src/test/bench/core-uint-to-str.rs
+++ b/src/test/bench/core-uint-to-str.rs
@@ -1,8 +1,8 @@
 fn main(args: [str]/~) {
     let args = if os::getenv("RUST_BENCH").is_some() {
-        ["", "10000000"]
+        ["", "10000000"]/~
     } else if args.len() <= 1u {
-        ["", "100000"]
+        ["", "100000"]/~
     } else {
         args
     };
diff --git a/src/test/bench/core-vec-append.rs b/src/test/bench/core-vec-append.rs
index e46cf25fade..34d756bb1e4 100644
--- a/src/test/bench/core-vec-append.rs
+++ b/src/test/bench/core-vec-append.rs
@@ -22,9 +22,9 @@ fn collect_dvec(num: uint) -> [mut uint]/~ {
 
 fn main(args: [str]/~) {
     let args = if os::getenv("RUST_BENCH").is_some() {
-        ["", "50000000"]
+        ["", "50000000"]/~
     } else if args.len() <= 1u {
-        ["", "100000"]
+        ["", "100000"]/~
     } else {
         args
     };
diff --git a/src/test/bench/graph500-bfs.rs b/src/test/bench/graph500-bfs.rs
index edad5e0dbba..0c768d05a0e 100644
--- a/src/test/bench/graph500-bfs.rs
+++ b/src/test/bench/graph500-bfs.rs
@@ -373,9 +373,9 @@ fn validate(edges: [(node_id, node_id)]/~,
 
 fn main(args: [str]/~) {
     let args = if os::getenv("RUST_BENCH").is_some() {
-        ["", "15", "48"]
+        ["", "15", "48"]/~
     } else if args.len() <= 1u {
-        ["", "10", "16"]
+        ["", "10", "16"]/~
     } else {
         args
     };
diff --git a/src/test/bench/msgsend-ring-new.rs b/src/test/bench/msgsend-ring-new.rs
index b8e74520b8f..b23bd25436b 100644
--- a/src/test/bench/msgsend-ring-new.rs
+++ b/src/test/bench/msgsend-ring-new.rs
@@ -23,9 +23,9 @@ fn thread_ring(i: uint,
 
 fn main(args: [str]/~) {
     let args = if os::getenv("RUST_BENCH").is_some() {
-        ["", "100", "10000"]
+        ["", "100", "10000"]/~
     } else if args.len() <= 1u {
-        ["", "100", "1000"]
+        ["", "100", "1000"]/~
     } else {
         args
     };        
diff --git a/src/test/bench/msgsend-ring.rs b/src/test/bench/msgsend-ring.rs
index 5b59005e572..754061a5955 100644
--- a/src/test/bench/msgsend-ring.rs
+++ b/src/test/bench/msgsend-ring.rs
@@ -23,9 +23,9 @@ fn thread_ring(i: uint,
 
 fn main(args: [str]/~) {
     let args = if os::getenv("RUST_BENCH").is_some() {
-        ["", "100", "10000"]
+        ["", "100", "10000"]/~
     } else if args.len() <= 1u {
-        ["", "100", "1000"]
+        ["", "100", "1000"]/~
     } else {
         args
     };        
diff --git a/src/test/bench/msgsend.rs b/src/test/bench/msgsend.rs
index cea712635a0..eef7b0d7257 100644
--- a/src/test/bench/msgsend.rs
+++ b/src/test/bench/msgsend.rs
@@ -60,9 +60,9 @@ fn run(args: [str]/~) {
 
 fn main(args: [str]/~) {
     let args = if os::getenv("RUST_BENCH").is_some() {
-        ["", "1000000", "10000"]
+        ["", "1000000", "10000"]/~
     } else if args.len() <= 1u {
-        ["", "10000", "4"]
+        ["", "10000", "4"]/~
     } else {
         args
     };        
diff --git a/src/test/bench/shootout-ackermann.rs b/src/test/bench/shootout-ackermann.rs
index 8f1f95b2581..7d74e453523 100644
--- a/src/test/bench/shootout-ackermann.rs
+++ b/src/test/bench/shootout-ackermann.rs
@@ -14,9 +14,9 @@ fn ack(m: int, n: int) -> int {
 
 fn main(args: [str]/~) {
     let args = if os::getenv("RUST_BENCH").is_some() {
-        ["", "12"]
+        ["", "12"]/~
     } else if args.len() <= 1u {
-        ["", "8"]
+        ["", "8"]/~
     } else {
         args
     };
diff --git a/src/test/bench/shootout-binarytrees.rs b/src/test/bench/shootout-binarytrees.rs
index b2769a36e89..bcda26ce183 100644
--- a/src/test/bench/shootout-binarytrees.rs
+++ b/src/test/bench/shootout-binarytrees.rs
@@ -24,9 +24,9 @@ fn bottom_up_tree(arena: &a.arena::arena, item: int, depth: int) -> &a.tree {
 
 fn main(args: [str]/~) {
     let args = if os::getenv("RUST_BENCH").is_some() {
-        ["", "17"]
+        ["", "17"]/~
     } else if args.len() <= 1u {
-        ["", "8"]
+        ["", "8"]/~
     } else {
         args
     };
diff --git a/src/test/bench/shootout-fannkuchredux.rs b/src/test/bench/shootout-fannkuchredux.rs
index 7a518e8c394..b4bdc8d7ba9 100644
--- a/src/test/bench/shootout-fannkuchredux.rs
+++ b/src/test/bench/shootout-fannkuchredux.rs
@@ -60,9 +60,9 @@ fn fannkuch(n: int) -> int {
 
 fn main(args: [str]/~) {
     let args = if os::getenv("RUST_BENCH").is_some() {
-        ["", "10"]
+        ["", "10"]/~
     } else if args.len() <= 1u {
-        ["", "8"]
+        ["", "8"]/~
     } else {
         args
     };
diff --git a/src/test/bench/shootout-fasta.rs b/src/test/bench/shootout-fasta.rs
index 0670f928adb..bd903b373b4 100644
--- a/src/test/bench/shootout-fasta.rs
+++ b/src/test/bench/shootout-fasta.rs
@@ -77,9 +77,9 @@ fn acid(ch: char, prob: u32) -> aminoacids { ret {ch: ch, prob: prob}; }
 fn main(args: [str]/~) {
     let args = if os::getenv("RUST_BENCH").is_some() {
         // alioth tests k-nucleotide with this data at 25,000,000
-        ["", "5000000"]
+        ["", "5000000"]/~
     } else if args.len() <= 1u {
-        ["", "1000"]
+        ["", "1000"]/~
     } else {
         args
     };
diff --git a/src/test/bench/shootout-fibo.rs b/src/test/bench/shootout-fibo.rs
index 2f076343cfd..79d5f6cc08a 100644
--- a/src/test/bench/shootout-fibo.rs
+++ b/src/test/bench/shootout-fibo.rs
@@ -10,9 +10,9 @@ fn fib(n: int) -> int {
 
 fn main(args: [str]/~) {
     let args = if os::getenv("RUST_BENCH").is_some() {
-        ["", "40"]
+        ["", "40"]/~
     } else if args.len() <= 1u {
-        ["", "30"]
+        ["", "30"]/~
     } else {
         args
     };
diff --git a/src/test/bench/shootout-k-nucleotide.rs b/src/test/bench/shootout-k-nucleotide.rs
index e83b660b9bb..fc9c999a533 100644
--- a/src/test/bench/shootout-k-nucleotide.rs
+++ b/src/test/bench/shootout-k-nucleotide.rs
@@ -187,7 +187,7 @@ fn main(args: [str]/~) {
 
    // finish...
    for sizes.eachi { |ii, _sz|
-      comm::send(to_child[ii], []);
+      comm::send(to_child[ii], []/~);
    }
 
    // now fetch and print result messages
diff --git a/src/test/bench/shootout-mandelbrot.rs b/src/test/bench/shootout-mandelbrot.rs
index 8b91f8310e7..2d06ae1324c 100644
--- a/src/test/bench/shootout-mandelbrot.rs
+++ b/src/test/bench/shootout-mandelbrot.rs
@@ -142,7 +142,7 @@ fn writer(path: str, writech: comm::chan<comm::chan<line>>, size: uint)
 
 fn main(args: [str]/~) {
     let args = if os::getenv("RUST_BENCH").is_some() {
-        ["", "4000", "10"]
+        ["", "4000", "10"]/~
     } else {
         args
     };
diff --git a/src/test/bench/shootout-nbody.rs b/src/test/bench/shootout-nbody.rs
index 518d1c39d85..6e5e6717861 100644
--- a/src/test/bench/shootout-nbody.rs
+++ b/src/test/bench/shootout-nbody.rs
@@ -15,9 +15,9 @@ native mod libc {
 
 fn main(args: [str]/~) {
     let args = if os::getenv("RUST_BENCH").is_some() {
-        ["", "4000000"]
+        ["", "4000000"]/~
     } else if args.len() <= 1u {
-        ["", "100000"]
+        ["", "100000"]/~
     } else {
         args
     };
diff --git a/src/test/bench/shootout-pfib.rs b/src/test/bench/shootout-pfib.rs
index b81d27df5b5..63578897639 100644
--- a/src/test/bench/shootout-pfib.rs
+++ b/src/test/bench/shootout-pfib.rs
@@ -80,9 +80,9 @@ fn stress(num_tasks: int) {
 
 fn main(args: [str]/~) {
     let args = if os::getenv("RUST_BENCH").is_some() {
-        ["", "20"]
+        ["", "20"]/~
     } else if args.len() <= 1u {
-        ["", "8"]
+        ["", "8"]/~
     } else {
         args
     };
diff --git a/src/test/bench/shootout-spectralnorm.rs b/src/test/bench/shootout-spectralnorm.rs
index 37e3380554b..4678ce41ca8 100644
--- a/src/test/bench/shootout-spectralnorm.rs
+++ b/src/test/bench/shootout-spectralnorm.rs
@@ -42,9 +42,9 @@ fn eval_AtA_times_u(u: [const float]/~, AtAu: [mut float]/~) {
 
 fn main(args: [str]/~) {
     let args = if os::getenv("RUST_BENCH").is_some() {
-        ["", "2000"]
+        ["", "2000"]/~
     } else if args.len() <= 1u {
-        ["", "1000"]
+        ["", "1000"]/~
     } else {
         args
     };
diff --git a/src/test/bench/shootout-threadring.rs b/src/test/bench/shootout-threadring.rs
index 9d8c5cc165b..7e16160f765 100644
--- a/src/test/bench/shootout-threadring.rs
+++ b/src/test/bench/shootout-threadring.rs
@@ -39,9 +39,9 @@ fn roundtrip(id: int, p: comm::port<int>, ch: comm::chan<int>) {
 
 fn main(args: [str]/~) {
     let args = if os::getenv("RUST_BENCH").is_some() {
-        ["", "2000000"]
+        ["", "2000000"]/~
     } else if args.len() <= 1u {
-        ["", "1000"]
+        ["", "1000"]/~
     } else {
         args
     };
diff --git a/src/test/bench/std-smallintmap.rs b/src/test/bench/std-smallintmap.rs
index b043264ff93..ac25e864278 100644
--- a/src/test/bench/std-smallintmap.rs
+++ b/src/test/bench/std-smallintmap.rs
@@ -19,9 +19,9 @@ fn check_sequential(min: uint, max: uint, map: smallintmap<uint>) {
 
 fn main(args: [str]/~) {
     let args = if os::getenv("RUST_BENCH").is_some() {
-        ["", "100000", "100"]
+        ["", "100000", "100"]/~
     } else if args.len() <= 1u {
-        ["", "10000", "50"]
+        ["", "10000", "50"]/~
     } else {
         args
     };
@@ -49,4 +49,4 @@ fn main(args: [str]/~) {
     io::stdout().write_str(#fmt("        : %f op/sec\n", maxf/checkf));
     io::stdout().write_str(#fmt("get()   : %? seconds\n", appendf));
     io::stdout().write_str(#fmt("        : %f op/sec\n", maxf/appendf));
-}
\ No newline at end of file
+}
diff --git a/src/test/bench/task-perf-one-million.rs b/src/test/bench/task-perf-one-million.rs
index 14896a3e73e..be33193f4f0 100644
--- a/src/test/bench/task-perf-one-million.rs
+++ b/src/test/bench/task-perf-one-million.rs
@@ -47,9 +47,9 @@ fn calc(children: uint, parent_ch: comm::chan<msg>) {
 
 fn main(args: [str]/~) {
     let args = if os::getenv("RUST_BENCH").is_some() {
-        ["", "100000"]
+        ["", "100000"]/~
     } else if args.len() <= 1u {
-        ["", "100"]
+        ["", "100"]/~
     } else {
         args
     };
diff --git a/src/test/bench/task-perf-spawnalot.rs b/src/test/bench/task-perf-spawnalot.rs
index 686a2175061..05260e1fd3e 100644
--- a/src/test/bench/task-perf-spawnalot.rs
+++ b/src/test/bench/task-perf-spawnalot.rs
@@ -10,9 +10,9 @@ fn g() { }
 
 fn main(args: [str]/~) {
     let args = if os::getenv("RUST_BENCH").is_some() {
-        ["", "400"]
+        ["", "400"]/~
     } else if args.len() <= 1u {
-        ["", "10"]
+        ["", "10"]/~
     } else {
         args
     };
diff --git a/src/test/run-fail/unwind-misc-1.rs b/src/test/run-fail/unwind-misc-1.rs
index 442efe3be25..abd91751460 100644
--- a/src/test/run-fail/unwind-misc-1.rs
+++ b/src/test/run-fail/unwind-misc-1.rs
@@ -18,8 +18,8 @@ fn main() {
     let map = map::hashmap(hash, eq);
     let mut arr = []/~;
     for uint::range(0u, 10u) {|i|
-        arr += [@"key stuff"];
-        map.insert(arr, arr + [@"value stuff"]);
+        arr += [@"key stuff"]/~;
+        map.insert(arr, arr + [@"value stuff"]/~);
     }
-    map.insert([@"boom"], []);
+    map.insert([@"boom"]/~, []/~);
 }
diff --git a/src/test/run-pass/argv.rs b/src/test/run-pass/argv.rs
index d49f54115ec..42f724f1861 100644
--- a/src/test/run-pass/argv.rs
+++ b/src/test/run-pass/argv.rs
@@ -1,5 +1,5 @@
 fn main(args: [str]/~) {
-    let vs: [str] = ["hi", "there", "this", "is", "a", "vec"];
+    let vs: [str]/~ = ["hi", "there", "this", "is", "a", "vec"]/~;
     let vvs: [[str]/~]/~ = [args, vs]/~;
     for vvs.each {|vs| for vs.each {|s| log(debug, s); } }
 }
diff --git a/src/test/run-pass/autobind.rs b/src/test/run-pass/autobind.rs
index e4a0db4f15d..24d80c23150 100644
--- a/src/test/run-pass/autobind.rs
+++ b/src/test/run-pass/autobind.rs
@@ -5,5 +5,5 @@ fn g(act: fn([int]/~) -> int) -> int { ret act([1, 2, 3]/~); }
 fn main() {
     assert (g(f) == 1);
     let f1: fn([str]/~) -> str = f;
-    assert (f1(["x", "y", "z"]) == "x");
+    assert (f1(["x", "y", "z"]/~) == "x");
 }
diff --git a/src/test/run-pass/class-poly-methods-cross-crate.rs b/src/test/run-pass/class-poly-methods-cross-crate.rs
index b21f1d4f709..9bdfb8af1d9 100644
--- a/src/test/run-pass/class-poly-methods-cross-crate.rs
+++ b/src/test/run-pass/class-poly-methods-cross-crate.rs
@@ -5,11 +5,11 @@ import cci_class_6::kitties::*;
 
 fn main() {
   let nyan : cat<char> = cat::<char>(52u, 99, ['p']/~);
-  let kitty = cat(1000u, 2, ["tabby"]);
+  let kitty = cat(1000u, 2, ["tabby"]/~);
   assert(nyan.how_hungry == 99);
   assert(kitty.how_hungry == 2);
   nyan.speak([1u,2u,3u]/~);
   assert(nyan.meow_count() == 55u);
-  kitty.speak(["meow", "mew", "purr", "chirp"]);
+  kitty.speak(["meow", "mew", "purr", "chirp"]/~);
   assert(kitty.meow_count() == 1004u);
 }
diff --git a/src/test/run-pass/class-poly-methods.rs b/src/test/run-pass/class-poly-methods.rs
index 0b6b3865d56..9cd9224be93 100644
--- a/src/test/run-pass/class-poly-methods.rs
+++ b/src/test/run-pass/class-poly-methods.rs
@@ -18,11 +18,11 @@ class cat<U> {
 
 fn main() {
   let nyan : cat<int> = cat::<int>(52u, 99, [9]/~);
-  let kitty = cat(1000u, 2, ["tabby"]);
+  let kitty = cat(1000u, 2, ["tabby"]/~);
   assert(nyan.how_hungry == 99);
   assert(kitty.how_hungry == 2);
   nyan.speak([1,2,3]/~);
   assert(nyan.meow_count() == 55u);
-  kitty.speak(["meow", "mew", "purr", "chirp"]);
+  kitty.speak(["meow", "mew", "purr", "chirp"]/~);
   assert(kitty.meow_count() == 1004u);
 }
diff --git a/src/test/run-pass/command-line-args.rs b/src/test/run-pass/command-line-args.rs
index 02ba8f16996..bc74be14d8b 100644
--- a/src/test/run-pass/command-line-args.rs
+++ b/src/test/run-pass/command-line-args.rs
@@ -1,3 +1,3 @@
 
 
-fn main(args: [str]) { log(debug, args[0]); }
+fn main(args: [str]/~) { log(debug, args[0]); }
diff --git a/src/test/run-pass/hashmap-memory.rs b/src/test/run-pass/hashmap-memory.rs
index ccbb07fce1f..b0abb2ed6db 100644
--- a/src/test/run-pass/hashmap-memory.rs
+++ b/src/test/run-pass/hashmap-memory.rs
@@ -94,5 +94,5 @@ mod map_reduce {
 }
 
 fn main() {
-    map_reduce::map_reduce(["../src/test/run-pass/hashmap-memory.rs"]);
+    map_reduce::map_reduce(["../src/test/run-pass/hashmap-memory.rs"]/~);
 }
diff --git a/src/test/run-pass/iface-generic.rs b/src/test/run-pass/iface-generic.rs
index 21345ed9850..f52498c1182 100644
--- a/src/test/run-pass/iface-generic.rs
+++ b/src/test/run-pass/iface-generic.rs
@@ -30,8 +30,8 @@ fn bar<U: to_str, T: map<U>>(x: T) -> [str]/~ {
 }
 
 fn main() {
-    assert foo([1]) == ["hi"];
-    assert bar::<int, [int]>([4, 5]) == ["4", "5"];
-    assert bar::<str, [str]>(["x", "y"]) == ["x", "y"];
-    assert bar::<(), [()]>([()]) == ["()"];
+    assert foo([1]) == ["hi"]/~;
+    assert bar::<int, [int]>([4, 5]) == ["4", "5"]/~;
+    assert bar::<str, [str]>(["x", "y"]/~) == ["x", "y"]/~;
+    assert bar::<(), [()]>([()]) == ["()"]/~;
 }
diff --git a/src/test/run-pass/issue-2631-b.rs b/src/test/run-pass/issue-2631-b.rs
index 5e0e0302839..81c4f4bbedb 100644
--- a/src/test/run-pass/issue-2631-b.rs
+++ b/src/test/run-pass/issue-2631-b.rs
@@ -10,7 +10,7 @@ import std::map::str_hash;
 import dvec;
 
 fn main() {
-  let v = [mut @"hi"];
+  let v = [mut @"hi"]/~;
   let m: req::header_map = str_hash();
   m.insert("METHOD", @dvec::from_vec(v));
   request::<int>(m);
diff --git a/src/test/run-pass/log-str.rs b/src/test/run-pass/log-str.rs
index e9b0f1e0c6d..5c086717748 100644
--- a/src/test/run-pass/log-str.rs
+++ b/src/test/run-pass/log-str.rs
@@ -1,4 +1,4 @@
 fn main() {
     assert "~[1, 2, 3]" == sys::log_str([1, 2, 3]/~);
-    assert #fmt["%?/%6?", [1, 2, 3], "hi"] == "~[1, 2, 3]/ ~\"hi\"";
+    assert #fmt["%?/%6?", [1, 2, 3]/~, "hi"] == "~[1, 2, 3]/ ~\"hi\"";
 }
diff --git a/src/test/run-pass/monad.rs b/src/test/run-pass/monad.rs
index e171cad58fb..671311018b5 100644
--- a/src/test/run-pass/monad.rs
+++ b/src/test/run-pass/monad.rs
@@ -22,6 +22,6 @@ fn transform(x: option<int>) -> option<str> {
 fn main() {
     assert transform(some(10)) == some("11");
     assert transform(none) == none;
-    assert ["hi"].bind {|x| [x, x + "!"]}.bind {|x| [x, x + "?"]} ==
-        ["hi", "hi?", "hi!", "hi!?"];
+    assert ["hi"]/~.bind {|x| [x, x + "!"]/~}.bind {|x| [x, x + "?"]/~} ==
+        ["hi", "hi?", "hi!", "hi!?"]/~;
 }
diff --git a/src/test/run-pass/operator-overloading-leaks.rs b/src/test/run-pass/operator-overloading-leaks.rs
index 07186db4da9..bcb344f5acd 100644
--- a/src/test/run-pass/operator-overloading-leaks.rs
+++ b/src/test/run-pass/operator-overloading-leaks.rs
@@ -2,11 +2,11 @@
 
 impl methods<T: copy> for [T]/~ {
     fn -(x: [T]/&) -> [T]/~ {
-        [x[0], x[0], x[0]]
+        [x[0], x[0], x[0]]/~
     }
 
     fn foo(x: [T]/&) -> [T]/~ {
-        [x[0], x[0], x[0]]
+        [x[0], x[0], x[0]]/~
     }
 }
 
diff --git a/src/test/run-pass/ret-break-cont-in-block.rs b/src/test/run-pass/ret-break-cont-in-block.rs
index 94d78b5f556..ff2b8030326 100644
--- a/src/test/run-pass/ret-break-cont-in-block.rs
+++ b/src/test/run-pass/ret-break-cont-in-block.rs
@@ -47,7 +47,7 @@ fn main() {
 
     assert find_pos(1, [0, 1, 2, 3]/~) == some(1u);
     assert find_pos(1, [0, 4, 2, 3]/~) == none;
-    assert find_pos("hi", ["foo", "bar", "baz", "hi"]) == some(3u);
+    assert find_pos("hi", ["foo", "bar", "baz", "hi"]/~) == some(3u);
 
     bail_deep([[false, false]/~, [true, true]/~, [false, true]/~]/~);
     bail_deep([[true]/~]/~);
diff --git a/src/test/run-pass/shape_intrinsic_tag_then_rec.rs b/src/test/run-pass/shape_intrinsic_tag_then_rec.rs
index 3a40b378f14..d041040772b 100644
--- a/src/test/run-pass/shape_intrinsic_tag_then_rec.rs
+++ b/src/test/run-pass/shape_intrinsic_tag_then_rec.rs
@@ -23,7 +23,7 @@ type ty = spanned<ty_>;
 fn main() {
     let sp: span = {lo: 57451u, hi: 57542u, expanded_from: os_none};
     let t: @ty = @{ data: 3u, span: sp };
-    let p_: path_ = { global: true, idents: ["hi"], types: [t] };
+    let p_: path_ = { global: true, idents: ["hi"]/~, types: [t] };
     let p: path = { data: p_, span: sp };
     let x = { sp: sp, path: p };
     log(error, x.path);
diff --git a/src/test/run-pass/swap-2.rs b/src/test/run-pass/swap-2.rs
index a70ffba452e..b0a7bd30d81 100644
--- a/src/test/run-pass/swap-2.rs
+++ b/src/test/run-pass/swap-2.rs
@@ -1,4 +1,4 @@
-fn swap<T>(v: [mut T], i: int, j: int) { v[i] <-> v[j]; }
+fn swap<T>(v: [mut T]/~, i: int, j: int) { v[i] <-> v[j]; }
 
 fn main() {
     let a: [mut int]/~ = [mut 0, 1, 2, 3, 4, 5, 6]/~;