Auto merge of #113432 - klensy:ms-cut-backtrace, r=ChrisDenton

reduce deps for windows-msvc targets for backtrace

(eventually) mirrors https://github.com/rust-lang/backtrace-rs/pull/543

Some dependencies of backtrace don't used on windows-msvc targets, so exclude them:

    miniz_oxide (+ adler)
    addr2line (+ gimli)
    object (+ memchr)

This saves about 30kb of std.dll + 17.5mb of rlibs

library/std/Cargo.toml

@@ -25,14 +25,12 @@ hashbrown = { version = "0.14", default-features = false, features = ['rustc-dep
 std_detect = { path = "../stdarch/crates/std_detect", default-features = false, features = ['rustc-dep-of-std'] }
 
 # Dependencies of the `backtrace` crate
-addr2line = { version = "0.20.0", optional = true, default-features = false }
 rustc-demangle = { version = "0.1.21", features = ['rustc-dep-of-std'] }
-miniz_oxide = { version = "0.7.0", optional = true, default-features = false, public = false }
-[dependencies.object]
-version = "0.31.1"
-optional = true
-default-features = false
-features = ['read_core', 'elf', 'macho', 'pe', 'unaligned', 'archive']
+
+[target.'cfg(not(all(windows, target_env = "msvc", not(target_vendor = "uwp"))))'.dependencies]
+miniz_oxide = { version = "0.7.0", optional = true, default-features = false }
+addr2line = { version = "0.20.0", optional = true, default-features = false }
+object = { version = "0.31.1", default-features = false, optional = true, features = ['read_core', 'elf', 'macho', 'pe', 'unaligned', 'archive'] }
 
 [dev-dependencies]
 rand = { version = "0.8.5", default-features = false, features = ["alloc"] }

library/std/src/lib.rs

@@ -397,9 +397,15 @@ extern crate libc;
 #[allow(unused_extern_crates)]
 extern crate unwind;
 
+// FIXME: #94122 this extern crate definition only exist here to stop
+// miniz_oxide docs leaking into std docs. Find better way to do it.
+// Remove exclusion from tidy platform check when this removed.
 #[doc(masked)]
 #[allow(unused_extern_crates)]
-#[cfg(feature = "miniz_oxide")]
+#[cfg(all(
+    not(all(windows, target_env = "msvc", not(target_vendor = "uwp"))),
+    feature = "miniz_oxide"
+))]
 extern crate miniz_oxide;
 
 // During testing, this crate is not actually the "real" std library, but rather

src/tools/tidy/src/deps.rs

@@ -113,7 +113,6 @@ const PERMITTED_DEPS_LOCATION: &str = concat!(file!(), ":", line!());
 /// rustc. Please check with the compiler team before adding an entry.
 const PERMITTED_RUSTC_DEPENDENCIES: &[&str] = &[
     // tidy-alphabetical-start
-    "addr2line",
     "adler",
     "ahash",
     "aho-corasick",

src/tools/tidy/src/pal.rs

@@ -52,6 +52,7 @@ const EXCEPTION_PATHS: &[&str] = &[
     // FIXME: platform-specific code should be moved to `sys`
     "library/std/src/io/copy.rs",
     "library/std/src/io/stdio.rs",
+    "library/std/src/lib.rs", // for miniz_oxide leaking docs, which itself workaround
     "library/std/src/path.rs",
     "library/std/src/sys_common", // Should only contain abstractions over platforms
     "library/std/src/net/test.rs", // Utility helpers for tests