---

yaml
---
r: 140710
b: refs/heads/try2
c: 8ca64a4
h: refs/heads/master
v: v3

Author: bors

[refs]

@@ -5,7 +5,7 @@ refs/heads/snap-stage3: 78a7676898d9f80ab540c6df5d4c9ce35bb50463
 refs/heads/try: 519addf6277dbafccbb4159db4b710c37eaa2ec5
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/heads/ndm: f3868061cd7988080c30d6d5bf352a5a5fe2460b
-refs/heads/try2: 3db74ddd2e0ec7ea02ac1b82745439587f514cc4
+refs/heads/try2: 8ca64a423bea5dd9f4149fe343f7cec87e25316c
 refs/heads/dist-snap: ba4081a5a8573875fed17545846f6f6902c8ba8d
 refs/tags/release-0.2: c870d2dffb391e14efb05aa27898f1f6333a9596
 refs/tags/release-0.3: b5f0d0f648d9a6153664837026ba1be43d3e2503

branches/try2/doc/rust.md

@@ -1946,35 +1946,6 @@ fn avg(v: &[float]) -> float {
 }
 ~~~~
 
-#### Swap expressions
-
-A _swap expression_ consists of an [lvalue](#lvalues-rvalues-and-temporaries) followed by a bi-directional arrow (`<->`) and another [lvalue](#lvalues-rvalues-and-temporaries).
-
-Evaluating a swap expression causes, as a side effect, the values held in the left-hand-side and right-hand-side [lvalues](#lvalues-rvalues-and-temporaries) to be exchanged indivisibly.
-
-Evaluating a swap expression neither changes reference counts,
-nor deeply copies any owned structure pointed to by the moved [rvalue](#lvalues-rvalues-and-temporaries).
-Instead, the swap expression represents an indivisible *exchange of ownership*,
-between the right-hand-side and the left-hand-side of the expression.
-No allocation or destruction is entailed.
-
-An example of three different swap expressions:
-
-~~~~~~~~
-# let mut x = &mut [0];
-# let mut a = &mut [0];
-# let i = 0;
-# struct S1 { z: int };
-# struct S2 { c: int };
-# let mut y = S1{z: 0};
-# let mut b = S2{c: 0};
-
-x <-> a;
-x[i] <-> a[i];
-y.z <-> b.c;
-~~~~~~~~
-
-
 #### Assignment expressions
 
 An _assignment expression_ consists of an [lvalue](#lvalues-rvalues-and-temporaries) expression followed by an
@@ -2015,7 +1986,7 @@ as
 == !=
 &&
 ||
-= <->
+=
 ~~~~
 
 Operators at the same precedence level are evaluated left-to-right.

branches/try2/doc/tutorial-ffi.md

@@ -151,6 +151,7 @@ wrapping `malloc` and `free`:
 ~~~~
 use core::libc::{c_void, size_t, malloc, free};
 use core::unstable::intrinsics;
+use core::util;
 
 // a wrapper around the handle returned by the foreign code
 pub struct Unique<T> {
@@ -184,7 +185,8 @@ impl<T: Owned> Drop for Unique<T> {
     fn finalize(&self) {
         unsafe {
             let mut x = intrinsics::init(); // dummy value to swap in
-            x <-> *self.ptr; // moving the object out is needed to call the destructor
+            // moving the object out is needed to call the destructor
+            util::replace_ptr(self.ptr, x);
             free(self.ptr as *c_void)
         }
     }

branches/try2/mk/platform.mk

@@ -247,12 +247,12 @@ AR_mips-unknown-linux-gnu=mips-linux-gnu-ar
 CFG_LIB_NAME_mips-unknown-linux-gnu=lib$(1).so
 CFG_LIB_GLOB_mips-unknown-linux-gnu=lib$(1)-*.so
 CFG_LIB_DSYM_GLOB_mips-unknown-linux-gnu=lib$(1)-*.dylib.dSYM
-CFG_GCCISH_CFLAGS_mips-unknown-linux-gnu := -Wall -g -fPIC -mips32r2 -msoft-float -mabi=32
+CFG_GCCISH_CFLAGS_mips-unknown-linux-gnu := -Wall -g -fPIC -mips32r2 -msoft-float -mabi=32 -mno-compact-eh
 CFG_GCCISH_CXXFLAGS_mips-unknown-linux-gnu := -fno-rtti
 CFG_GCCISH_LINK_FLAGS_mips-unknown-linux-gnu := -shared -fPIC -g -mips32r2 -msoft-float -mabi=32
 CFG_GCCISH_DEF_FLAG_mips-unknown-linux-gnu := -Wl,--export-dynamic,--dynamic-list=
 CFG_GCCISH_PRE_LIB_FLAGS_mips-unknown-linux-gnu := -Wl,-whole-archive
-CFG_GCCISH_POST_LIB_FLAGS_mips-unknown-linux-gnu := -Wl,-no-whole-archive -Wl,-znoexecstack
+CFG_GCCISH_POST_LIB_FLAGS_mips-unknown-linux-gnu := -Wl,-no-whole-archive
 CFG_DEF_SUFFIX_mips-unknown-linux-gnu := .linux.def
 CFG_INSTALL_NAME_mips-unknown-linux-gnu =
 CFG_LIBUV_LINK_FLAGS_mips-unknown-linux-gnu =

branches/try2/src/compiletest/header.rs

@@ -91,7 +91,7 @@ pub fn is_test_ignored(config: config, testfile: &Path) -> bool {
     return false;
 
     fn xfail_target() -> ~str {
-        ~"xfail-" + str::from_slice(os::SYSNAME)
+        ~"xfail-" + str::to_owned(os::SYSNAME)
     }
 }
 

branches/try2/src/compiletest/runtest.rs

@@ -371,7 +371,7 @@ fn check_expected_errors(expected_errors: ~[errors::ExpectedError],
             was_expected = true;
         }
 
-        if !was_expected && is_compiler_error_or_warning(str::from_slice(line)) {
+        if !was_expected && is_compiler_error_or_warning(str::to_owned(line)) {
             fatal_ProcRes(fmt!("unexpected compiler error or warning: '%s'",
                                line),
                           ProcRes);
@@ -596,7 +596,7 @@ fn make_lib_name(config: config, auxfile: &Path, testfile: &Path) -> Path {
 
 fn make_exe_name(config: config, testfile: &Path) -> Path {
     Path(output_base_name(config, testfile).to_str() +
-            str::from_slice(os::EXE_SUFFIX))
+            str::to_owned(os::EXE_SUFFIX))
 }
 
 fn make_run_args(config: config, _props: TestProps, testfile: &Path) ->

branches/try2/src/libcore/cell.rs

@@ -12,6 +12,7 @@
 
 use cast::transmute_mut;
 use prelude::*;
+use util::replace;
 
 /*
 A dynamic, mutable location.
@@ -48,9 +49,7 @@ pub impl<T> Cell<T> {
             fail!(~"attempt to take an empty cell");
         }
 
-        let mut value = None;
-        value <-> self.value;
-        value.unwrap()
+        replace(&mut self.value, None).unwrap()
     }
 
     /// Returns the value, failing if the cell is full.

branches/try2/src/libcore/cleanup.rs

@@ -127,6 +127,7 @@ struct AnnihilateStats {
     n_bytes_freed: uint
 }
 
+#[cfg(stage0)]
 unsafe fn each_live_alloc(read_next_before: bool,
                           f: &fn(box: *mut BoxRepr, uniq: bool) -> bool) {
     //! Walks the internal list of allocations
@@ -141,8 +142,8 @@ unsafe fn each_live_alloc(read_next_before: bool,
         let uniq =
             (*box).header.ref_count == managed::raw::RC_MANAGED_UNIQUE;
 
-        if ! f(box, uniq) {
-            break
+        if !f(box, uniq) {
+            return;
         }
 
         if read_next_before {
@@ -152,6 +153,33 @@ unsafe fn each_live_alloc(read_next_before: bool,
         }
     }
 }
+#[cfg(not(stage0))]
+unsafe fn each_live_alloc(read_next_before: bool,
+                          f: &fn(box: *mut BoxRepr, uniq: bool) -> bool) -> bool {
+    //! Walks the internal list of allocations
+
+    use managed;
+
+    let task: *Task = transmute(rustrt::rust_get_task());
+    let box = (*task).boxed_region.live_allocs;
+    let mut box: *mut BoxRepr = transmute(copy box);
+    while box != mut_null() {
+        let next_before = transmute(copy (*box).header.next);
+        let uniq =
+            (*box).header.ref_count == managed::raw::RC_MANAGED_UNIQUE;
+
+        if !f(box, uniq) {
+            return false;
+        }
+
+        if read_next_before {
+            box = next_before;
+        } else {
+            box = transmute(copy (*box).header.next);
+        }
+    }
+    return true;
+}
 
 #[cfg(unix)]
 fn debug_mem() -> bool {

branches/try2/src/libcore/comm.rs

@@ -21,6 +21,7 @@ use uint;
 use unstable;
 use vec;
 use unstable::Exclusive;
+use util::replace;
 
 use pipes::{recv, try_recv, wait_many, peek, PacketHeader};
 
@@ -149,9 +150,8 @@ impl<T: Owned> GenericChan<T> for Chan<T> {
     #[inline(always)]
     fn send(&self, x: T) {
         unsafe {
-            let mut endp = None;
             let mut self_endp = transmute_mut(&self.endp);
-            endp <-> *self_endp;
+            let endp = replace(self_endp, None);
             *self_endp = Some(streamp::client::data(endp.unwrap(), x))
         }
     }
@@ -161,9 +161,8 @@ impl<T: Owned> GenericSmartChan<T> for Chan<T> {
     #[inline(always)]
     fn try_send(&self, x: T) -> bool {
         unsafe {
-            let mut endp = None;
             let mut self_endp = transmute_mut(&self.endp);
-            endp <-> *self_endp;
+            let endp = replace(self_endp, None);
             match streamp::client::try_data(endp.unwrap(), x) {
                 Some(next) => {
                     *self_endp = Some(next);
@@ -179,9 +178,8 @@ impl<T: Owned> GenericPort<T> for Port<T> {
     #[inline(always)]
     fn recv(&self) -> T {
         unsafe {
-            let mut endp = None;
             let mut self_endp = transmute_mut(&self.endp);
-            endp <-> *self_endp;
+            let endp = replace(self_endp, None);
             let streamp::data(x, endp) = recv(endp.unwrap());
             *self_endp = Some(endp);
             x
@@ -191,9 +189,8 @@ impl<T: Owned> GenericPort<T> for Port<T> {
     #[inline(always)]
     fn try_recv(&self) -> Option<T> {
         unsafe {
-            let mut endp = None;
             let mut self_endp = transmute_mut(&self.endp);
-            endp <-> *self_endp;
+            let endp = replace(self_endp, None);
             match try_recv(endp.unwrap()) {
                 Some(streamp::data(x, endp)) => {
                     *self_endp = Some(endp);
@@ -209,14 +206,13 @@ impl<T: Owned> Peekable<T> for Port<T> {
     #[inline(always)]
     fn peek(&self) -> bool {
         unsafe {
-            let mut endp = None;
             let mut self_endp = transmute_mut(&self.endp);
-            endp <-> *self_endp;
+            let mut endp = replace(self_endp, None);
             let peek = match endp {
                 Some(ref mut endp) => peek(endp),
                 None => fail!(~"peeking empty stream")
             };
-            *self_endp <-> endp;
+            *self_endp = endp;
             peek
         }
     }
@@ -267,8 +263,7 @@ impl<T:Owned> GenericPort<T> for PortSet<T> {
             let mut result = None;
             // we have to swap the ports array so we aren't borrowing
             // aliasable mutable memory.
-            let mut ports = ~[];
-            ports <-> *self_ports;
+            let mut ports = replace(self_ports, ~[]);
             while result.is_none() && ports.len() > 0 {
                 let i = wait_many(ports);
                 match ports[i].try_recv() {
@@ -281,7 +276,7 @@ impl<T:Owned> GenericPort<T> for PortSet<T> {
                     }
                 }
             }
-            ports <-> *self_ports;
+            *self_ports = ports;
             result
         }
     }
@@ -320,8 +315,7 @@ impl<T: Owned> GenericChan<T> for SharedChan<T> {
     fn send(&self, x: T) {
         let mut xx = Some(x);
         do self.ch.with_imm |chan| {
-            let mut x = None;
-            x <-> xx;
+            let x = replace(&mut xx, None);
             chan.send(x.unwrap())
         }
     }
@@ -331,8 +325,7 @@ impl<T: Owned> GenericSmartChan<T> for SharedChan<T> {
     fn try_send(&self, x: T) -> bool {
         let mut xx = Some(x);
         do self.ch.with_imm |chan| {
-            let mut x = None;
-            x <-> xx;
+            let x = replace(&mut xx, None);
             chan.try_send(x.unwrap())
         }
     }

branches/try2/src/libcore/condition.rs

@@ -12,7 +12,7 @@
 
 use prelude::*;
 use task;
-use task::local_data::{local_data_pop, local_data_set};
+use local_data::{local_data_pop, local_data_set};
 
 // helper for transmutation, shown below.
 type RustClosure = (int, int);
@@ -24,14 +24,14 @@ pub struct Handler<T, U> {
 
 pub struct Condition<'self, T, U> {
     name: &'static str,
-    key: task::local_data::LocalDataKey<'self, Handler<T, U>>
+    key: local_data::LocalDataKey<'self, Handler<T, U>>
 }
 
 pub impl<'self, T, U> Condition<'self, T, U> {
     fn trap(&'self self, h: &'self fn(T) -> U) -> Trap<'self, T, U> {
         unsafe {
             let p : *RustClosure = ::cast::transmute(&h);
-            let prev = task::local_data::local_data_get(self.key);
+            let prev = local_data::local_data_get(self.key);
             let h = @Handler { handle: *p, prev: prev };
             Trap { cond: self, handler: h }
         }