[Experiment] Build the standard library with -Csymbol-mangling-version=v0 #142257

Original file line number	Diff line number	Diff line change
Expand Up		@@ -1408,7 +1408,7 @@ impl Options {
		}

		pub fn get_symbol_mangling_version(&self) -> SymbolManglingVersion {
	self.cg.symbol_mangling_version.unwrap_or(SymbolManglingVersion::Legacy)
	self.cg.symbol_mangling_version.unwrap_or(SymbolManglingVersion::V0)
		}
		}

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22 changes: 1 addition & 21 deletions src/bootstrap/src/core/builder/cargo.rs

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Original file line number	Diff line number	Diff line change
Expand Up		@@ -578,22 +578,6 @@ impl Builder<'_> {
		rustflags.arg(sysroot_str);
		}

	let use_new_symbol_mangling = match self.config.rust_new_symbol_mangling {
	Some(setting) => {
	// If an explicit setting is given, use that
	setting
	}
	None => {
	if mode == Mode::Std {
	// The standard library defaults to the legacy scheme
	false
	} else {
	// The compiler and tools default to the new scheme
	true
	}
	}
	};

		// By default, windows-rs depends on a native library that doesn't get copied into the
		// sysroot. Passing this cfg enables raw-dylib support instead, which makes the native
		// library unnecessary. This can be removed when windows-rs enables raw-dylib
Expand All		@@ -602,11 +586,7 @@ impl Builder<'_> {
		rustflags.arg("--cfg=windows_raw_dylib");
		}

	if use_new_symbol_mangling {
	rustflags.arg("-Csymbol-mangling-version=v0");
	} else {
	rustflags.arg("-Csymbol-mangling-version=legacy");
	}
	rustflags.arg("-Csymbol-mangling-version=v0");

		// FIXME: the following components don't build with `-Zrandomize-layout` yet:
		// - rust-analyzer, due to the rowan crate
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