Rollup merge of #125226 - madsmtm:fix-mac-catalyst-tests, r=workingjubilee

Make more of the test suite run on Mac Catalyst

Combined with https://github.com/rust-lang/rust/pull/125225, the only failing parts of the test suite are in `tests/rustdoc-js`, `tests/rustdoc-js-std` and `tests/debuginfo`. Tested with:
```console
./x test --target=aarch64-apple-ios-macabi library/std
./x test --target=aarch64-apple-ios-macabi --skip=tests/rustdoc-js --skip=tests/rustdoc-js-std --skip=tests/debuginfo tests
```

Will probably put up a PR later to enable _running_ on (not just compiling for) Mac Catalyst in CI, though not sure where exactly I should do so? `src/ci/github-actions/jobs.yml`?

Note that I've deliberately _not_ enabled stack overflow handlers on iOS/tvOS/watchOS/visionOS (see https://github.com/rust-lang/rust/issues/25872), but rather just skipped those tests, as it uses quite a few APIs that I'd be weary about getting rejected by the App Store (note that Swift doesn't do it on those platforms either).

r? ``@workingjubilee``

CC ``@thomcc``

``@rustbot`` label O-ios O-apple

src/tools/compiletest/src/header.rs

@@ -747,6 +747,7 @@ const KNOWN_DIRECTIVE_NAMES: &[&str] = &[
     "ignore-aarch64",
     "ignore-aarch64-unknown-linux-gnu",
     "ignore-android",
+    "ignore-apple",
     "ignore-arm",
     "ignore-avr",
     "ignore-beta",
@@ -829,7 +830,6 @@ const KNOWN_DIRECTIVE_NAMES: &[&str] = &[
     "ignore-x32",
     "ignore-x86",
     "ignore-x86_64",
-    "ignore-x86_64-apple-darwin",
     "ignore-x86_64-unknown-linux-gnu",
     "incremental",
     "known-bug",
@@ -876,6 +876,7 @@ const KNOWN_DIRECTIVE_NAMES: &[&str] = &[
     "only-32bit",
     "only-64bit",
     "only-aarch64",
+    "only-apple",
     "only-arm",
     "only-avr",
     "only-beta",

src/tools/compiletest/src/header/cfg.rs

@@ -159,6 +159,12 @@ pub(super) fn parse_cfg_name_directive<'a>(
         message: "when the architecture is part of the Thumb family"
     }
 
+    condition! {
+        name: "apple",
+        condition: config.target.contains("apple"),
+        message: "when the target vendor is Apple"
+    }
+
     // Technically the locally built compiler uses the "dev" channel rather than the "nightly"
     // channel, even though most people don't know or won't care about it. To avoid confusion, we
     // treat the "dev" channel as the "nightly" channel when processing the directive.

src/tools/compiletest/src/runtest.rs

@@ -98,7 +98,7 @@ fn get_lib_name(lib: &str, aux_type: AuxType) -> Option<String> {
         AuxType::Lib => Some(format!("lib{}.rlib", lib)),
         AuxType::Dylib => Some(if cfg!(windows) {
             format!("{}.dll", lib)
-        } else if cfg!(target_os = "macos") {
+        } else if cfg!(target_vendor = "apple") {
             format!("lib{}.dylib", lib)
         } else {
             format!("lib{}.so", lib)

src/tools/compiletest/src/util.rs

@@ -57,7 +57,7 @@ impl PathBufExt for PathBuf {
 pub fn dylib_env_var() -> &'static str {
     if cfg!(windows) {
         "PATH"
-    } else if cfg!(target_os = "macos") {
+    } else if cfg!(target_vendor = "apple") {
         "DYLD_LIBRARY_PATH"
     } else if cfg!(target_os = "haiku") {
         "LIBRARY_PATH"

src/tools/tidy/src/issues.txt

@@ -2122,7 +2122,6 @@ ui/issues/issue-33687.rs
 ui/issues/issue-33770.rs
 ui/issues/issue-3389.rs
 ui/issues/issue-33941.rs
-ui/issues/issue-33992.rs
 ui/issues/issue-34047.rs
 ui/issues/issue-34074.rs
 ui/issues/issue-34209.rs

src/tools/tidy/src/ui_tests.rs

@@ -15,7 +15,7 @@ use std::path::{Path, PathBuf};
 const ENTRY_LIMIT: u32 = 900;
 // FIXME: The following limits should be reduced eventually.
 
-const ISSUES_ENTRY_LIMIT: u32 = 1676;
+const ISSUES_ENTRY_LIMIT: u32 = 1674;
 
 const EXPECTED_TEST_FILE_EXTENSIONS: &[&str] = &[
     "rs",     // test source files