Auto merge of #36764 - jonathandturner:rollup, r=jonathandturner

Rollup of 14 pull requests

- Successful merges: #36563, #36574, #36586, #36662, #36663, #36669, #36676, #36721, #36723, #36727, #36729, #36742, #36754, #36756
- Failed merges:

configure

@@ -437,6 +437,10 @@ case $CFG_OSTYPE in
         CFG_CPUTYPE=$(isainfo -n)
         ;;
 
+    Haiku)
+        CFG_OSTYPE=unknown-haiku
+        ;;
+
     MINGW*)
         # msys' `uname` does not print gcc configuration, but prints msys
         # configuration. so we cannot believe `uname -m`:
@@ -532,6 +536,10 @@ case $CFG_CPUTYPE in
         CFG_CPUTYPE=x86_64
         ;;
 
+    BePC)
+        CFG_CPUTYPE=i686
+        ;;
+
     *)
         err "unknown CPU type: $CFG_CPUTYPE"
 esac

mk/cfg/i686-unknown-haiku.mk

@@ -0,0 +1,27 @@
+# i686-unknown-haiku configuration
+CROSS_PREFIX_i686-unknown-haiku=i586-pc-haiku-
+CC_i686-unknown-haiku=$(CC)
+CXX_i686-unknown-haiku=$(CXX)
+CPP_i686-unknown-haiku=$(CPP)
+AR_i686-unknown-haiku=$(AR)
+CFG_LIB_NAME_i686-unknown-haiku=lib$(1).so
+CFG_STATIC_LIB_NAME_i686-unknown-haiku=lib$(1).a
+CFG_LIB_GLOB_i686-unknown-haiku=lib$(1)-*.so
+CFG_LIB_DSYM_GLOB_i686-unknown-haiku=lib$(1)-*.dylib.dSYM
+CFG_CFLAGS_i686-unknown-haiku := -m32 $(CFLAGS)
+CFG_GCCISH_CFLAGS_i686-unknown-haiku := -Wall -Werror -g -fPIC -m32 $(CFLAGS)
+CFG_GCCISH_CXXFLAGS_i686-unknown-haiku := -fno-rtti $(CXXFLAGS)
+CFG_GCCISH_LINK_FLAGS_i686-unknown-haiku := -shared -fPIC -ldl -pthread  -lrt -g -m32
+CFG_GCCISH_PRE_LIB_FLAGS_i686-unknown-haiku := -Wl,-whole-archive
+CFG_GCCISH_POST_LIB_FLAGS_i686-unknown-haiku := -Wl,-no-whole-archive
+CFG_DEF_SUFFIX_i686-unknown-haiku := .linux.def
+CFG_LLC_FLAGS_i686-unknown-haiku :=
+CFG_INSTALL_NAME_i686-unknown-haiku =
+CFG_EXE_SUFFIX_i686-unknown-haiku =
+CFG_WINDOWSY_i686-unknown-haiku :=
+CFG_UNIXY_i686-unknown-haiku := 1
+CFG_PATH_MUNGE_i686-unknown-haiku := true
+CFG_LDPATH_i686-unknown-haiku :=
+CFG_RUN_i686-unknown-haiku=$(2)
+CFG_RUN_TARG_i686-unknown-haiku=$(call CFG_RUN_i686-unknown-haiku,,$(2))
+CFG_GNU_TRIPLE_i686-unknown-haiku := i686-unknown-haiku

mk/cfg/x86_64-unknown-haiku.mk

@@ -0,0 +1,27 @@
+# x86_64-unknown-haiku configuration
+CROSS_PREFIX_x86_64-unknown-haiku=x86_64-unknown-haiku-
+CC_x86_64-unknown-haiku=$(CC)
+CXX_x86_64-unknown-haiku=$(CXX)
+CPP_x86_64-unknown-haiku=$(CPP)
+AR_x86_64-unknown-haiku=$(AR)
+CFG_LIB_NAME_x86_64-unknown-haiku=lib$(1).so
+CFG_STATIC_LIB_NAME_x86_64-unknown-haiku=lib$(1).a
+CFG_LIB_GLOB_x86_64-unknown-haiku=lib$(1)-*.so
+CFG_LIB_DSYM_GLOB_x86_64-unknown-haiku=lib$(1)-*.dylib.dSYM
+CFG_CFLAGS_x86_64-unknown-haiku := -m64 $(CFLAGS)
+CFG_GCCISH_CFLAGS_x86_64-unknown-haiku := -Wall -Werror -g -fPIC -m64 $(CFLAGS)
+CFG_GCCISH_CXXFLAGS_x86_64-unknown-haiku := -fno-rtti $(CXXFLAGS)
+CFG_GCCISH_LINK_FLAGS_x86_64-unknown-haiku := -shared -fPIC -ldl -pthread -lrt -g -m64
+CFG_GCCISH_PRE_LIB_FLAGS_x86_64-unknown-haiku := -Wl,-whole-archive
+CFG_GCCISH_POST_LIB_FLAGS_x86_64-unknown-haiku := -Wl,-no-whole-archive
+CFG_DEF_SUFFIX_x86_64-unknown-haiku := .linux.def
+CFG_LLC_FLAGS_x86_64-unknown-haiku :=
+CFG_INSTALL_NAME_x86_64-unknown-haiku =
+CFG_EXE_SUFFIX_x86_64-unknown-haiku =
+CFG_WINDOWSY_x86_64-unknown-haiku :=
+CFG_UNIXY_x86_64-unknown-haiku := 1
+CFG_PATH_MUNGE_x86_64-unknown-haiku := true
+CFG_LDPATH_x86_64-unknown-haiku :=
+CFG_RUN_x86_64-unknown-haiku=$(2)
+CFG_RUN_TARG_x86_64-unknown-haiku=$(call CFG_RUN_x86_64-unknown-haiku,,$(2))
+CFG_GNU_TRIPLE_x86_64-unknown-haiku := x86_64-unknown-haiku

mk/main.mk

@@ -512,10 +512,14 @@ ifeq ($$(OSTYPE_$(3)),apple-darwin)
 else
 ifeq ($$(CFG_WINDOWSY_$(3)),1)
   LD_LIBRARY_PATH_ENV_NAME$(1)_T_$(2)_H_$(3) := PATH
+else
+ifeq ($$(OSTYPE_$(3)),unknown-haiku)
+  LD_LIBRARY_PATH_ENV_NAME$(1)_T_$(2)_H_$(3) := LIBRARY_PATH
 else
   LD_LIBRARY_PATH_ENV_NAME$(1)_T_$(2)_H_$(3) := LD_LIBRARY_PATH
 endif
 endif
+endif
 
 LD_LIBRARY_PATH_ENV_HOSTDIR$(1)_T_$(2)_H_$(3) := \
     $$(CURDIR)/$$(HLIB$(1)_H_$(3)):$$(CFG_LLVM_INST_DIR_$(3))/lib

src/bootstrap/lib.rs

@@ -243,7 +243,14 @@ impl Build {
         // Almost all of these are simple one-liners that shell out to the
         // corresponding functionality in the extra modules, where more
         // documentation can be found.
-        for target in step::all(self) {
+        let steps = step::all(self);
+
+        self.verbose("bootstrap build plan:");
+        for step in &steps {
+            self.verbose(&format!("{:?}", step));
+        }
+
+        for target in steps {
             let doc_out = self.out.join(&target.target).join("doc");
             match target.src {
                 Llvm { _dummy } => {

src/bootstrap/step.rs

@@ -171,6 +171,8 @@ targets!(define_source);
 /// into a topologically sorted list which when executed left-to-right will
 /// correctly sequence the entire build.
 pub fn all(build: &Build) -> Vec<Step> {
+    build.verbose("inferred build steps:");
+
     let mut ret = Vec::new();
     let mut all = HashSet::new();
     for target in top_level(build) {
@@ -184,6 +186,7 @@ pub fn all(build: &Build) -> Vec<Step> {
                 set: &mut HashSet<Step<'a>>) {
         if set.insert(target.clone()) {
             for dep in target.deps(build) {
+                build.verbose(&format!("{:?}\n  -> {:?}", target, dep));
                 fill(build, &dep, ret, set);
             }
             ret.push(target.clone());

src/doc/book/getting-started.md

@@ -230,12 +230,13 @@ $ cd hello_world
 
 ## Writing and Running a Rust Program
 
-Next, make a new source file and call it *main.rs*. Rust files always end
-in a *.rs* extension. If you’re using more than one word in your filename, use
-an underscore to separate them; for example, you'd use *hello_world.rs* rather
-than *helloworld.rs*.
+We need to create a source file for our Rust program. Rust files always end
+in a *.rs* extension. If you are using more than one word in your filename,
+use an underscore to separate them; for example, you would use
+*my_program.rs* rather than *myprogram.rs*.
 
-Now open the *main.rs* file you just created, and type the following code:
+Now, make a new file and call it *main.rs*. Open the file and type
+the following code:
 
 ```rust
 fn main() {

src/etc/local_stage0.sh

@@ -18,7 +18,7 @@ LIB_PREFIX=lib
 
 OS=`uname -s`
 case $OS in
-    ("Linux"|"FreeBSD"|"DragonFly"|"Bitrig"|"OpenBSD"|"SunOS")
+    ("Linux"|"FreeBSD"|"DragonFly"|"Bitrig"|"OpenBSD"|"SunOS"|"Haiku")
     BIN_SUF=
     LIB_SUF=.so
     ;;

src/librustc/middle/intrinsicck.rs

@@ -103,11 +103,16 @@ impl<'a, 'gcx, 'tcx> ExprVisitor<'a, 'gcx, 'tcx> {
             }
         };
 
-        span_err!(self.infcx.tcx.sess, span, E0512,
+        struct_span_err!(self.infcx.tcx.sess, span, E0512,
                   "transmute called with differently sized types: \
                    {} ({}) to {} ({})",
                   from, skeleton_string(from, sk_from),
-                  to, skeleton_string(to, sk_to));
+                  to, skeleton_string(to, sk_to))
+            .span_label(span,
+                &format!("transmuting between {} and {}",
+                    skeleton_string(from, sk_from),
+                    skeleton_string(to, sk_to)))
+            .emit();
     }
 }
 

src/librustc/session/config.rs

@@ -605,6 +605,7 @@ macro_rules! options {
         pub const parse_opt_bool: Option<&'static str> =
             Some("one of: `y`, `yes`, `on`, `n`, `no`, or `off`");
         pub const parse_string: Option<&'static str> = Some("a string");
+        pub const parse_string_push: Option<&'static str> = Some("a string");
         pub const parse_opt_string: Option<&'static str> = Some("a string");
         pub const parse_list: Option<&'static str> = Some("a space-separated list of strings");
         pub const parse_opt_list: Option<&'static str> = Some("a space-separated list of strings");
@@ -667,6 +668,13 @@ macro_rules! options {
             }
         }
 
+        fn parse_string_push(slot: &mut Vec<String>, v: Option<&str>) -> bool {
+            match v {
+                Some(s) => { slot.push(s.to_string()); true },
+                None => false,
+            }
+        }
+
         fn parse_list(slot: &mut Vec<String>, v: Option<&str>)
                       -> bool {
             match v {
@@ -742,6 +750,8 @@ options! {CodegenOptions, CodegenSetter, basic_codegen_options,
         "tool to assemble archives with"),
     linker: Option<String> = (None, parse_opt_string, [UNTRACKED],
         "system linker to link outputs with"),
+    link_arg: Vec<String> = (vec![], parse_string_push, [UNTRACKED],
+        "a single extra argument to pass to the linker (can be used several times)"),
     link_args: Option<Vec<String>> = (None, parse_opt_list, [UNTRACKED],
         "extra arguments to pass to the linker (space separated)"),
     link_dead_code: bool = (false, parse_bool, [UNTRACKED],

src/librustc_back/target/haiku_base.rs

@@ -0,0 +1,23 @@
+// Copyright 2014-2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+use target::TargetOptions;
+use std::default::Default;
+
+pub fn opts() -> TargetOptions {
+    TargetOptions {
+        linker: "cc".to_string(),
+        dynamic_linking: true,
+        executables: true,
+        has_rpath: true,
+        linker_is_gnu: true,
+        .. Default::default()
+    }
+}

src/librustc_back/target/i686_unknown_haiku.rs

@@ -0,0 +1,30 @@
+// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+use target::{Target, TargetResult};
+
+pub fn target() -> TargetResult {
+    let mut base = super::haiku_base::opts();
+    base.cpu = "pentium4".to_string();
+    base.max_atomic_width = 64;
+    base.pre_link_args.push("-m32".to_string());
+
+    Ok(Target {
+        llvm_target: "i686-unknown-haiku".to_string(),
+        target_endian: "little".to_string(),
+        target_pointer_width: "32".to_string(),
+        data_layout: "e-m:e-p:32:32-f64:32:64-f80:32-n8:16:32-S128".to_string(),
+        arch: "x86".to_string(),
+        target_os: "haiku".to_string(),
+        target_env: "".to_string(),
+        target_vendor: "unknown".to_string(),
+        options: base,
+    })
+}

src/librustc_back/target/mod.rs

@@ -56,6 +56,7 @@ mod apple_ios_base;
 mod bitrig_base;
 mod dragonfly_base;
 mod freebsd_base;
+mod haiku_base;
 mod linux_base;
 mod linux_musl_base;
 mod openbsd_base;
@@ -165,6 +166,9 @@ supported_targets! {
     ("x86_64-unknown-netbsd", x86_64_unknown_netbsd),
     ("x86_64-rumprun-netbsd", x86_64_rumprun_netbsd),
 
+    ("i686_unknown_haiku", i686_unknown_haiku),
+    ("x86_64_unknown_haiku", x86_64_unknown_haiku),
+
     ("x86_64-apple-darwin", x86_64_apple_darwin),
     ("i686-apple-darwin", i686_apple_darwin),
 

src/librustc_back/target/x86_64_unknown_haiku.rs

@@ -0,0 +1,30 @@
+// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+use target::{Target, TargetResult};
+
+pub fn target() -> TargetResult {
+    let mut base = super::haiku_base::opts();
+    base.cpu = "x86-64".to_string();
+    base.max_atomic_width = 64;
+    base.pre_link_args.push("-m64".to_string());
+
+    Ok(Target {
+        llvm_target: "x86_64-unknown-haiku".to_string(),
+        target_endian: "little".to_string(),
+        target_pointer_width: "64".to_string(),
+        data_layout: "e-m:e-i64:64-f80:128-n8:16:32:64-S128".to_string(),
+        arch: "x86_64".to_string(),
+        target_os: "haiku".to_string(),
+        target_env: "".to_string(),
+        target_vendor: "unknown".to_string(),
+        options: base,
+    })
+}

src/librustc_data_structures/flock.rs

@@ -94,6 +94,27 @@ mod imp {
         pub const F_SETLKW: libc::c_int = 9;
     }
 
+    #[cfg(target_os = "haiku")]
+    mod os {
+        use libc;
+
+        pub struct flock {
+            pub l_type: libc::c_short,
+            pub l_whence: libc::c_short,
+            pub l_start: libc::off_t,
+            pub l_len: libc::off_t,
+            pub l_pid: libc::pid_t,
+
+            // not actually here, but brings in line with freebsd
+            pub l_sysid: libc::c_int,
+        }
+
+        pub const F_UNLCK: libc::c_short = 0x0200;
+        pub const F_WRLCK: libc::c_short = 0x0400;
+        pub const F_SETLK: libc::c_int = 0x0080;
+        pub const F_SETLKW: libc::c_int = 0x0100;
+    }
+
     #[cfg(any(target_os = "macos", target_os = "ios"))]
     mod os {
         use libc;

src/librustc_trans/back/link.rs

@@ -754,7 +754,8 @@ fn link_args(cmd: &mut Linker,
         let empty_vec = Vec::new();
         let empty_str = String::new();
         let args = sess.opts.cg.link_args.as_ref().unwrap_or(&empty_vec);
-        let mut args = args.iter().chain(used_link_args.iter());
+        let more_args = &sess.opts.cg.link_arg;
+        let mut args = args.iter().chain(more_args.iter()).chain(used_link_args.iter());
         let relocation_model = sess.opts.cg.relocation_model.as_ref()
                                    .unwrap_or(&empty_str);
         if (t.options.relocation_model == "pic" || *relocation_model == "pic")
@@ -844,6 +845,7 @@ fn link_args(cmd: &mut Linker,
     if let Some(ref args) = sess.opts.cg.link_args {
         cmd.args(args);
     }
+    cmd.args(&sess.opts.cg.link_arg);
     cmd.args(&used_link_args);
 }
 

src/librustc_typeck/check/mod.rs

@@ -1525,9 +1525,11 @@ impl<'a, 'gcx, 'tcx> FnCtxt<'a, 'gcx, 'tcx> {
         match self.locals.borrow().get(&nid) {
             Some(&t) => t,
             None => {
-                span_err!(self.tcx.sess, span, E0513,
-                          "no type for local variable {}",
-                          nid);
+                struct_span_err!(self.tcx.sess, span, E0513,
+                                 "no type for local variable {}",
+                                 self.tcx.map.node_to_string(nid))
+                    .span_label(span, &"no type for variable")
+                    .emit();
                 self.tcx.types.err
             }
         }