Auto merge of #78033 - Dylan-DPC:rollup-ds2cfsf, r=Dylan-DPC

Rollup of 6 pull requests

Successful merges:

 - #76199 (Permit uninhabited enums to cast into ints)
 - #77751 (liballoc: VecDeque: Add binary search functions)
 - #77785 (Remove compiler-synthesized reexports when documenting)
 - #77932 (BTreeMap: improve gdb introspection of BTreeMap with ZST keys or values)
 - #77961 (Set .llvmbc and .llvmcmd sections as allocatable)
 - #77985 (llvm: backport SystemZ fix for AGR clobbers)

Failed merges:

r? `@ghost`

4 files changed, 30 insertions, 18 deletions

diff --git a/src/test/debuginfo/pretty-std-collections.rs b/src/test/debuginfo/pretty-std-collections.rs
index c6d2090759f..cc2a3a34510 100644
--- a/src/test/debuginfo/pretty-std-collections.rs
+++ b/src/test/debuginfo/pretty-std-collections.rs
@@ -34,20 +34,26 @@
 // gdb-check:$6 = BTreeMap(size=15) = {[0] = pretty_std_collections::MyLeafNode (0), [...]}
 // (abbreviated because it's boring but we need enough elements to include internal nodes)
 
-// gdb-command: print zst_btree_map
-// gdb-check:$7 = BTreeMap(size=1)
+// gdb-command: print zst_key_btree_map
+// gdb-check:$7 = BTreeMap(size=1) = {[()] = 1}
+
+// gdb-command: print zst_val_btree_map
+// gdb-check:$8 = BTreeMap(size=1) = {[1] = ()}
+
+// gdb-command: print zst_key_val_btree_map
+// gdb-check:$9 = BTreeMap(size=1) = {[()] = ()}
 
 // gdb-command: print vec_deque
-// gdb-check:$8 = VecDeque(size=3) = {5, 3, 7}
+// gdb-check:$10 = VecDeque(size=3) = {5, 3, 7}
 
 // gdb-command: print vec_deque2
-// gdb-check:$9 = VecDeque(size=7) = {2, 3, 4, 5, 6, 7, 8}
+// gdb-check:$11 = VecDeque(size=7) = {2, 3, 4, 5, 6, 7, 8}
 
 // gdb-command: print hash_map
-// gdb-check:$10 = HashMap(size=4) = {[1] = 10, [2] = 20, [3] = 30, [4] = 40}
+// gdb-check:$12 = HashMap(size=4) = {[1] = 10, [2] = 20, [3] = 30, [4] = 40}
 
 // gdb-command: print hash_set
-// gdb-check:$11 = HashSet(size=4) = {1, 2, 3, 4}
+// gdb-check:$13 = HashSet(size=4) = {1, 2, 3, 4}
 
 // === LLDB TESTS ==================================================================================
 
@@ -114,8 +120,14 @@ fn main() {
         nasty_btree_map.insert(i, MyLeafNode(i));
     }
 
-    let mut zst_btree_map: BTreeMap<(), ()> = BTreeMap::new();
-    zst_btree_map.insert((), ());
+    let mut zst_key_btree_map: BTreeMap<(), i32> = BTreeMap::new();
+    zst_key_btree_map.insert((), 1);
+
+    let mut zst_val_btree_map: BTreeMap<i32, ()> = BTreeMap::new();
+    zst_val_btree_map.insert(1, ());
+
+    let mut zst_key_val_btree_map: BTreeMap<(), ()> = BTreeMap::new();
+    zst_key_val_btree_map.insert((), ());
 
     // VecDeque
     let mut vec_deque = VecDeque::new();
diff --git a/src/test/rustdoc/no-compiler-reexport.rs b/src/test/rustdoc/no-compiler-reexport.rs
new file mode 100644
index 00000000000..6d50325fed5
--- /dev/null
+++ b/src/test/rustdoc/no-compiler-reexport.rs
@@ -0,0 +1,7 @@
+// compile-flags: --no-defaults
+
+#![crate_name = "foo"]
+
+// @has 'foo/index.html' '//code' 'extern crate std;'
+// @!has 'foo/index.html' '//code' 'use std::prelude::v1::*;'
+pub struct Foo;
diff --git a/src/test/ui/uninhabited/uninhabited-enum-cast.rs b/src/test/ui/uninhabited/uninhabited-enum-cast.rs
index 7e178e054cc..5a75c94c42f 100644
--- a/src/test/ui/uninhabited/uninhabited-enum-cast.rs
+++ b/src/test/ui/uninhabited/uninhabited-enum-cast.rs
@@ -1,7 +1,9 @@
+// check-pass
+
 enum E {}
 
 fn f(e: E) {
-    println!("{}", (e as isize).to_string());   //~ ERROR non-primitive cast
+    println!("{}", (e as isize).to_string());
 }
 
 fn main() {}
diff --git a/src/test/ui/uninhabited/uninhabited-enum-cast.stderr b/src/test/ui/uninhabited/uninhabited-enum-cast.stderr
deleted file mode 100644
index a9f10dfec99..00000000000
--- a/src/test/ui/uninhabited/uninhabited-enum-cast.stderr
+++ /dev/null
@@ -1,9 +0,0 @@
-error[E0605]: non-primitive cast: `E` as `isize`
-  --> $DIR/uninhabited-enum-cast.rs:4:20
-   |
-LL |     println!("{}", (e as isize).to_string());
-   |                    ^^^^^^^^^^^^ an `as` expression can only be used to convert between primitive types or to coerce to a specific trait object
-
-error: aborting due to previous error
-
-For more information about this error, try `rustc --explain E0605`.