auto merge of #14867 : alexcrichton/rust/rollup, r=alexcrichton

Author: bors

configure

@@ -416,7 +416,6 @@ opt mingw-cross 0 "cross-compile for win32 using mingw"
 opt clang 0 "prefer clang to gcc for building the runtime"
 opt ccache 0 "invoke gcc/clang via ccache to reuse object files between builds"
 opt local-rust 0 "use an installed rustc rather than downloading a snapshot"
-opt pax-flags 0 "apply PaX flags to rustc binaries (required for GRSecurity/PaX-patched kernels)"
 opt inject-std-version 1 "inject the current compiler version of libstd into programs"
 opt llvm-static-stdcpp 0 "statically link to libstdc++ for LLVM"
 opt rpath 1 "build rpaths into rustc itself"
@@ -518,12 +517,6 @@ then
     fi
 fi
 
-if [ "$CFG_OSTYPE" = "unknown-linux-gnu" ]
-then
-    probe CFG_PAXCTL           paxctl /sbin/paxctl
-    probe CFG_ZCAT             zcat
-fi
-
 step_msg "looking for target specific programs"
 
 probe CFG_ADB        adb
@@ -546,51 +539,6 @@ then
     fi
 fi
 
-if [ "$CFG_OSTYPE" = "unknown-linux-gnu" ]
-then
-    if [ ! -z "$CFG_ENABLE_PAX_FLAGS" -a -z "$CFG_PAXCTL" ]
-    then
-        err "enabled PaX markings but no paxctl binary found"
-    fi
-
-    if [ -z "$CFG_DISABLE_PAX_FLAGS" ]
-    then
-        # GRSecurity/PaX detection. This can be very flaky.
-        GRSEC_DETECTED=
-
-        # /dev/grsec only exists if CONFIG_GRKERNSEC_NO_RBAC is not set.
-        # /proc/sys/kernel/grsecurity is not available if ÇONFIG_GRKERNSEC_SYSCTL is not set.
-        if [ -e /dev/grsec -o -d /proc/sys/kernel/grsecurity ]
-        then
-            GRSEC_DETECTED=1
-        # /proc/config.gz is normally only available to root, and only if CONFIG_IKCONFIG_PROC has been set.
-        elif [ -r /proc/config.gz -a ! -z "$CFG_ZCAT" ]
-        then
-            if "$CFG_ZCAT" /proc/config.gz | grep --quiet "CONFIG_GRKERNSEC=y"
-            then
-                GRSEC_DETECTED=1
-            fi
-        # Flaky.
-        elif grep --quiet grsec /proc/version
-        then
-            GRSEC_DETECTED=1
-        fi
-
-        if [ ! -z "$GRSEC_DETECTED" ]
-        then
-            step_msg "GRSecurity: yes"
-            if [ ! -z "$CFG_PAXCTL" ]
-            then
-                CFG_ENABLE_PAX_FLAGS=1
-            else
-                warn "GRSecurity kernel detected but no paxctl binary found: not setting CFG_ENABLE_PAX_FLAGS"
-            fi
-        else
-            step_msg "GRSecurity: no"
-        fi
-    fi
-fi
-
 BIN_SUF=
 if [ "$CFG_OSTYPE" = "pc-mingw32" ] || [ "$CFG_OSTYPE" = "w64-mingw32" ]
 then
@@ -942,16 +890,33 @@ then
     msg "git: submodule sync"
     "${CFG_GIT}" submodule sync
 
+    msg "git: submodule init"
+    "${CFG_GIT}" submodule init
+
+    # Disable submodules that we're not using
+    if [ ! -z "${CFG_LLVM_ROOT}" ]; then
+        msg "git: submodule deinit src/llvm"
+        "${CFG_GIT}" submodule deinit src/llvm
+    fi
+    if [ ! -z "${CFG_JEMALLOC_ROOT}" ]; then
+        msg "git: submodule deinit src/jemalloc"
+        "${CFG_GIT}" submodule deinit src/jemalloc
+    fi
+    if [ ! -z "${CFG_LIBUV_ROOT}" ]; then
+        msg "git: submodule deinit src/libuv"
+        "${CFG_GIT}" submodule deinit src/libuv
+    fi
+
     msg "git: submodule update"
-    "${CFG_GIT}" submodule update --init
+    "${CFG_GIT}" submodule update
     need_ok "git failed"
 
     msg "git: submodule foreach sync"
     "${CFG_GIT}" submodule foreach --recursive 'if test -e .gitmodules; then git submodule sync; fi'
     need_ok "git failed"
 
     msg "git: submodule foreach update"
-    "${CFG_GIT}" submodule update --init --recursive
+    "${CFG_GIT}" submodule update --recursive
     need_ok "git failed"
 
     # NB: this is just for the sake of getting the submodule SHA1 values

mk/stage0.mk

@@ -18,10 +18,6 @@ ifdef CFG_ENABLE_LOCAL_RUST
 	$(Q)$(S)src/etc/local_stage0.sh $(CFG_BUILD) $(CFG_LOCAL_RUST_ROOT) rustlib
 else
 	$(Q)$(CFG_PYTHON) $(S)src/etc/get-snapshot.py $(CFG_BUILD) $(SNAPSHOT_FILE)
-ifdef CFG_ENABLE_PAX_FLAGS
-	@$(call E, apply PaX flags: $@)
-	@"$(CFG_PAXCTL)" -cm "$@"
-endif
 endif
 	$(Q)touch $@
 

src/libcollections/treemap.rs

@@ -761,7 +761,7 @@ pub struct IntersectionItems<'a, T> {
     b: Peekable<&'a T, SetItems<'a, T>>,
 }
 
-/// Lazy iterator producing elements in the set intersection (in-order)
+/// Lazy iterator producing elements in the set union (in-order)
 pub struct UnionItems<'a, T> {
     a: Peekable<&'a T, SetItems<'a, T>>,
     b: Peekable<&'a T, SetItems<'a, T>>,

src/libcore/any.rs

@@ -8,10 +8,10 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-//! Traits for dynamic typing of any type (through runtime reflection)
+//! Traits for dynamic typing of any `'static` type (through runtime reflection)
 //!
 //! This module implements the `Any` trait, which enables dynamic typing
-//! of any type, through runtime reflection.
+//! of any `'static` type through runtime reflection.
 //!
 //! `Any` itself can be used to get a `TypeId`, and has more features when used as a trait object.
 //! As `&Any` (a borrowed trait object), it has the `is` and `as_ref` methods, to test if the
@@ -32,8 +32,10 @@ pub enum Void { }
 // Any trait
 ///////////////////////////////////////////////////////////////////////////////
 
-/// The `Any` trait is implemented by all types, and can be used as a trait object
-/// for dynamic typing
+/// The `Any` trait is implemented by all `'static` types, and can be used for dynamic typing
+///
+/// Every type with no non-`'static` references implements `Any`, so `Any` can be used as a trait
+/// object to emulate the effects dynamic typing.
 pub trait Any {
     /// Get the `TypeId` of `self`
     fn get_type_id(&self) -> TypeId;
@@ -261,6 +263,14 @@ mod tests {
         let s = format!("{}", b);
         assert_eq!(s.as_slice(), "&Any");
     }
+
+    #[test]
+    fn any_fixed_vec() {
+        let test = [0u, ..8];
+        let test = &test as &Any;
+        assert!(test.is::<[uint, ..8]>());
+        assert!(!test.is::<[uint, ..10]>());
+    }
 }
 
 #[cfg(test)]

src/libcore/intrinsics.rs

@@ -307,6 +307,20 @@ extern "rust-intrinsic" {
     /// `forget` is unsafe because the caller is responsible for
     /// ensuring the argument is deallocated already.
     pub fn forget<T>(_: T) -> ();
+
+    /// Unsafely transforms a value of one type into a value of another type.
+    ///
+    /// Both types must have the same size and alignment, and this guarantee
+    /// is enforced at compile-time.
+    ///
+    /// # Example
+    ///
+    /// ```rust
+    /// use std::mem;
+    ///
+    /// let v: &[u8] = unsafe { mem::transmute("L") };
+    /// assert!(v == [76u8]);
+    /// ```
     pub fn transmute<T,U>(e: T) -> U;
 
     /// Returns `true` if a type requires drop glue.

src/libcore/mem.rs

@@ -17,6 +17,8 @@ use ptr;
 use intrinsics;
 use intrinsics::{bswap16, bswap32, bswap64};
 
+pub use intrinsics::transmute;
+
 /// Returns the size of a type in bytes.
 #[inline]
 #[stable]
@@ -412,29 +414,6 @@ pub fn drop<T>(_x: T) { }
 #[stable]
 pub unsafe fn forget<T>(thing: T) { intrinsics::forget(thing) }
 
-/// Unsafely transforms a value of one type into a value of another type.
-///
-/// Both types must have the same size and alignment, and this guarantee is
-/// enforced at compile-time.
-///
-/// # Example
-///
-/// ```rust
-/// use std::mem;
-///
-/// let v: &[u8] = unsafe { mem::transmute("L") };
-/// assert!(v == [76u8]);
-/// ```
-#[inline]
-#[unstable = "this function will be modified to reject invocations of it which \
-              cannot statically prove that T and U are the same size. For \
-              example, this function, as written today, will be rejected in \
-              the future because the size of T and U cannot be statically \
-              known to be the same"]
-pub unsafe fn transmute<T, U>(thing: T) -> U {
-    intrinsics::transmute(thing)
-}
-
 /// Interprets `src` as `&U`, and then reads `src` without moving the contained
 /// value.
 ///

src/libnative/io/c_win32.rs

@@ -77,15 +77,20 @@ pub mod compat {
         fn GetProcAddress(hModule: HMODULE, lpProcName: LPCSTR) -> LPVOID;
     }
 
-    // store_func() is idempotent, so using relaxed ordering for the atomics should be enough.
-    // This way, calling a function in this compatibility layer (after it's loaded) shouldn't
-    // be any slower than a regular DLL call.
-    unsafe fn store_func<T: Copy>(ptr: *mut T, module: &str, symbol: &str, fallback: T) {
+    // store_func() is idempotent, so using relaxed ordering for the atomics
+    // should be enough.  This way, calling a function in this compatibility
+    // layer (after it's loaded) shouldn't be any slower than a regular DLL
+    // call.
+    unsafe fn store_func(ptr: *mut uint, module: &str, symbol: &str, fallback: uint) {
         let module = module.to_utf16().append_one(0);
         symbol.with_c_str(|symbol| {
             let handle = GetModuleHandleW(module.as_ptr());
-            let func: Option<T> = transmute(GetProcAddress(handle, symbol));
-            atomic_store_relaxed(ptr, func.unwrap_or(fallback))
+            let func: uint = transmute(GetProcAddress(handle, symbol));
+            atomic_store_relaxed(ptr, if func == 0 {
+                fallback
+            } else {
+                func
+            })
         })
     }
 
@@ -109,10 +114,10 @@ pub mod compat {
 
                 extern "system" fn thunk($($argname: $argtype),*) -> $rettype {
                     unsafe {
-                        ::io::c::compat::store_func(&mut ptr,
-                                                             stringify!($module),
-                                                             stringify!($symbol),
-                                                             fallback);
+                        ::io::c::compat::store_func(&mut ptr as *mut _ as *mut uint,
+                                                    stringify!($module),
+                                                    stringify!($symbol),
+                                                    fallback as uint);
                         ::std::intrinsics::atomic_load_relaxed(&ptr)($($argname),*)
                     }
                 }

src/librustc/driver/driver.rs

@@ -333,6 +333,9 @@ pub fn phase_3_run_analysis_passes(sess: Session,
             time(time_passes, "privacy checking", maps, |(a, b)|
                  middle::privacy::check_crate(&ty_cx, &exp_map2, a, b, krate));
 
+    time(time_passes, "intrinsic checking", (), |_|
+         middle::intrinsicck::check_crate(&ty_cx, krate));
+
     time(time_passes, "effect checking", (), |_|
          middle::effect::check_crate(&ty_cx, krate));
 

src/librustc/lib.rs

@@ -85,6 +85,7 @@ pub mod middle {
     pub mod dependency_format;
     pub mod weak_lang_items;
     pub mod save;
+    pub mod intrinsicck;
 }
 
 pub mod front {