Fix various CI issues

.github/workflows/ci.yml

@@ -25,7 +25,7 @@ jobs:
     name: Check formatting
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Check formatting
       run: cargo fmt -- --check
 
@@ -79,7 +79,8 @@ jobs:
             runtime: gnustep-1-9
             libobjc2: "1.9"
           - name: Test GNUStep with libobjc2 v2.0
-            os: ubuntu-latest
+            # Fails for some reason on Ubuntu 22
+            os: ubuntu-20.04
             target: x86_64-unknown-linux-gnu
             runtime: gnustep-2-0
             libobjc2: "2.0"
@@ -92,7 +93,9 @@ jobs:
             libobjc2: "2.1"
             fuzz: true
           - name: Test GNUStep 32bit
-            os: ubuntu-latest
+            # Ubuntu 22 image doesn't have the required C++ libraries
+            # installed for 32-bit
+            os: ubuntu-20.04
             target: i686-unknown-linux-gnu
             cflags: -m32
             configureflags: --target=x86-pc-linux-gnu
@@ -162,11 +165,11 @@ jobs:
     runs-on: ${{ matrix.os }}
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
 
     - name: Cache external dependencies
       id: extern-cache
-      uses: actions/cache@v2
+      uses: actions/cache@v3
       with:
         # We could have just cached build-files, and then rerun the build tool
         # every time, letting it figure out what's changed. However, this has
@@ -297,7 +300,7 @@ jobs:
         ls -al $HOME/extern/*
 
     - name: Cache Cargo
-      uses: actions/cache@v2
+      uses: actions/cache@v3
       with:
         path: |
           ~/.cargo/bin/
@@ -307,7 +310,8 @@ jobs:
         key: cargo-${{ matrix.name }}-${{ hashFiles('**/Cargo.toml') }}
 
     - name: Cache Rust Target
-      uses: actions/cache@v2
+      if: ${{ !contains(matrix.rust.toolchain, 'nightly') }}
+      uses: actions/cache@v3
       with:
         path: |
           target/

crates/objc2-encode/src/encode.rs

@@ -784,7 +784,7 @@ mod tests {
         extern "C" fn my_fn3(x: &u8) -> &u8 {
             x
         }
-        extern "C" fn my_fn4<'a, 'b>(x: &'a u8, _y: &'b i32) -> &'a u8 {
+        extern "C" fn my_fn4<'a>(x: &'a u8, _y: &i32) -> &'a u8 {
             x
         }
 

crates/test-ui/ui/invalid_msg_send.stderr

@@ -3,19 +3,36 @@ error: unexpected end of macro invocation
   |
   |     let _: () = unsafe { msg_send![obj] };
   |                                       ^ missing tokens in macro arguments
+  |
+note: while trying to match `,`
+ --> $WORKSPACE/crates/objc2/src/macros.rs
+  |
+  |     [$obj:expr, $($selector_and_arguments:tt)+] => {
+  |               ^
 
 error: unexpected end of macro invocation
  --> ui/invalid_msg_send.rs
   |
   |     let _: () = unsafe { msg_send![obj,] };
   |                                        ^ missing tokens in macro arguments
+  |
+note: while trying to match meta-variable `$selector_and_arguments:tt`
+ --> $WORKSPACE/crates/objc2/src/macros.rs
+  |
+  |     [$obj:expr, $($selector_and_arguments:tt)+] => {
+  |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: no rules expected the token `)`
  --> ui/invalid_msg_send.rs
   |
   |     let _: () = unsafe { msg_send![obj, a:] };
   |                          ^^^^^^^^^^^^^^^^^^ no rules expected this token in macro call
   |
+note: while trying to match `_`
+ --> $WORKSPACE/crates/objc2/src/macros/__msg_send_parse.rs
+  |
+  |         @($selector:ident: _ $(,)?)
+  |                            ^
   = note: this error originates in the macro `msg_send` (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error: no rules expected the token `)`
@@ -24,6 +41,11 @@ error: no rules expected the token `)`
   |     let _: () = unsafe { msg_send![obj, a: b c] };
   |                          ^^^^^^^^^^^^^^^^^^^^^^ no rules expected this token in macro call
   |
+note: while trying to match `:`
+ --> $WORKSPACE/crates/objc2/src/macros/__msg_send_parse.rs
+  |
+  |         @($($selector:ident : $argument:expr)*)
+  |                             ^
   = note: this error originates in the macro `msg_send` (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error: no rules expected the token `a`
@@ -32,19 +54,36 @@ error: no rules expected the token `a`
   |     let _: () = unsafe { msg_send![obj, a: b, c d] };
   |                          ^^^^^^^^^^^^^^^^^^^^^^^^^ no rules expected this token in macro call
   |
+note: while trying to match `)`
+ --> $WORKSPACE/crates/objc2/src/macros/__msg_send_parse.rs
+  |
+  |         @()
+  |           ^
   = note: this error originates in the macro `$crate::__msg_send_parse` which comes from the expansion of the macro `msg_send` (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error: no rules expected the token `,`
  --> ui/invalid_msg_send.rs
   |
   |     let _: () = unsafe { msg_send![obj, a: b c: d,] };
   |                                                  ^ no rules expected this token in macro call
+  |
+note: while trying to match `)`
+ --> $WORKSPACE/crates/objc2/src/macros/__msg_send_parse.rs
+  |
+  |         @($($selector:ident : $argument:expr)*)
+  |                                               ^
 
 error: no rules expected the token `b`
  --> ui/invalid_msg_send.rs
   |
   |     let _: Result<(), Id<Object, Shared>> = unsafe { msg_send![obj, a: _, b: _] };
   |                                                                           ^ no rules expected this token in macro call
+  |
+note: while trying to match `)`
+ --> $WORKSPACE/crates/objc2/src/macros/__msg_send_parse.rs
+  |
+  |         @($selector:ident: _ $(,)?)
+  |                                   ^
 
 error[E0412]: cannot find type `c` in this scope
  --> ui/invalid_msg_send.rs

crates/test-ui/ui/invalid_ns_string_input.stderr

@@ -4,26 +4,26 @@ error[E0308]: mismatched types
   |     let _ = ns_string!(1u8);
   |                        ^^^ expected `&str`, found `u8`
 
-error[E0080]: evaluation of constant value failed
+note: erroneous constant used
  --> ui/invalid_ns_string_input.rs
   |
   |     let _ = ns_string!(1u8);
-  |             ^^^^^^^^^^^^^^^ referenced constant has errors
+  |             ^^^^^^^^^^^^^^^
   |
-  = note: this error originates in the macro `$crate::__ns_string_inner` which comes from the expansion of the macro `ns_string` (in Nightly builds, run with -Z macro-backtrace for more info)
+  = note: this note originates in the macro `$crate::__ns_string_inner` which comes from the expansion of the macro `ns_string` (in Nightly builds, run with -Z macro-backtrace for more info)
 
-error[E0080]: evaluation of constant value failed
+note: erroneous constant used
  --> ui/invalid_ns_string_input.rs
   |
   |     let _ = ns_string!(1u8);
-  |             ^^^^^^^^^^^^^^^ referenced constant has errors
+  |             ^^^^^^^^^^^^^^^
   |
-  = note: this error originates in the macro `$crate::__ns_string_inner` which comes from the expansion of the macro `ns_string` (in Nightly builds, run with -Z macro-backtrace for more info)
+  = note: this note originates in the macro `$crate::__ns_string_inner` which comes from the expansion of the macro `ns_string` (in Nightly builds, run with -Z macro-backtrace for more info)
 
-error[E0080]: evaluation of constant value failed
+note: erroneous constant used
  --> ui/invalid_ns_string_input.rs
   |
   |     let _ = ns_string!(1u8);
-  |             ^^^^^^^^^^^^^^^ referenced constant has errors
+  |             ^^^^^^^^^^^^^^^
   |
-  = note: this error originates in the macro `$crate::__ns_string_inner` which comes from the expansion of the macro `ns_string` (in Nightly builds, run with -Z macro-backtrace for more info)
+  = note: this note originates in the macro `$crate::__ns_string_inner` which comes from the expansion of the macro `ns_string` (in Nightly builds, run with -Z macro-backtrace for more info)

crates/test-ui/ui/invalid_sel.stderr

@@ -3,15 +3,33 @@ error: unexpected end of macro invocation
   |
   |     sel!();
   |     ^^^^^^ missing tokens in macro arguments
+  |
+note: while trying to match `alloc`
+ --> $WORKSPACE/crates/objc2/src/macros.rs
+  |
+  |     (alloc) => ({
+  |      ^^^^^
 
 error: unexpected end of macro invocation
  --> ui/invalid_sel.rs
   |
   |     sel!(a: b);
   |              ^ missing tokens in macro arguments
+  |
+note: while trying to match `:`
+ --> $WORKSPACE/crates/objc2/src/macros.rs
+  |
+  |     ($first:ident $(: $($rest:ident :)*)?) => ({
+  |                                     ^
 
 error: unexpected end of macro invocation
  --> ui/invalid_sel.rs
   |
   |     sel!(a: b: c);
   |                 ^ missing tokens in macro arguments
+  |
+note: while trying to match `:`
+ --> $WORKSPACE/crates/objc2/src/macros.rs
+  |
+  |     ($first:ident $(: $($rest:ident :)*)?) => ({
+  |                                     ^

crates/test-ui/ui/ns_string_not_const.stderr

@@ -7,26 +7,50 @@ error[E0435]: attempt to use a non-constant value in a constant
   |             |          non-constant value
   |             help: consider using `let` instead of `const`: `let INPUT`
 
-error[E0080]: evaluation of constant value failed
+note: erroneous constant used
  --> ui/ns_string_not_const.rs
   |
   |     let _ = ns_string!(s);
-  |             ^^^^^^^^^^^^^ referenced constant has errors
+  |             ^^^^^^^^^^^^^
   |
-  = note: this error originates in the macro `$crate::__ns_string_inner` which comes from the expansion of the macro `ns_string` (in Nightly builds, run with -Z macro-backtrace for more info)
+  = note: this note originates in the macro `$crate::__ns_string_inner` which comes from the expansion of the macro `ns_string` (in Nightly builds, run with -Z macro-backtrace for more info)
 
-error[E0080]: evaluation of constant value failed
+note: erroneous constant used
  --> ui/ns_string_not_const.rs
   |
   |     let _ = ns_string!(s);
-  |             ^^^^^^^^^^^^^ referenced constant has errors
+  |             ^^^^^^^^^^^^^
   |
-  = note: this error originates in the macro `$crate::__ns_string_inner` which comes from the expansion of the macro `ns_string` (in Nightly builds, run with -Z macro-backtrace for more info)
+  = note: this note originates in the macro `$crate::__ns_string_inner` which comes from the expansion of the macro `ns_string` (in Nightly builds, run with -Z macro-backtrace for more info)
 
-error[E0080]: evaluation of constant value failed
+note: erroneous constant used
  --> ui/ns_string_not_const.rs
   |
   |     let _ = ns_string!(s);
-  |             ^^^^^^^^^^^^^ referenced constant has errors
+  |             ^^^^^^^^^^^^^
   |
-  = note: this error originates in the macro `$crate::__ns_string_inner` which comes from the expansion of the macro `ns_string` (in Nightly builds, run with -Z macro-backtrace for more info)
+  = note: this note originates in the macro `$crate::__ns_string_inner` which comes from the expansion of the macro `ns_string` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+note: erroneous constant used
+ --> ui/ns_string_not_const.rs
+  |
+  |     let _ = ns_string!(s);
+  |             ^^^^^^^^^^^^^
+  |
+  = note: this note originates in the macro `$crate::__ns_string_inner` which comes from the expansion of the macro `ns_string` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+note: erroneous constant used
+ --> ui/ns_string_not_const.rs
+  |
+  |     let _ = ns_string!(s);
+  |             ^^^^^^^^^^^^^
+  |
+  = note: this note originates in the macro `$crate::__ns_string_inner` which comes from the expansion of the macro `ns_string` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+note: erroneous constant used
+ --> ui/ns_string_not_const.rs
+  |
+  |     let _ = ns_string!(s);
+  |             ^^^^^^^^^^^^^
+  |
+  = note: this note originates in the macro `$crate::__ns_string_inner` which comes from the expansion of the macro `ns_string` (in Nightly builds, run with -Z macro-backtrace for more info)