From a47367631603c1688a73cdb34c48bcd74a400019 Mon Sep 17 00:00:00 2001 From: David Wood Date: Fri, 15 Oct 2021 15:20:21 +0000 Subject: [PATCH] sess: default to v0 symbol mangling Rust's current mangling scheme depends on compiler internals; loses information about generic parameters (and other things) which makes for a worse experience when using external tools that need to interact with Rust symbol names; is inconsistent; and can contain `.` characters which aren't universally supported. Therefore, Rust has defined its own symbol mangling scheme which is defined in terms of the Rust language, not the compiler implementation; encodes information about generic parameters in a reversible way; has a consistent definition; and generates symbols that only use the characters `A-Z`, `a-z`, `0-9`, and `_`. Support for the new Rust symbol mangling scheme has been added to upstream tools that will need to interact with Rust symbols (e.g. debuggers). This commit changes the default symbol mangling scheme from the legacy scheme to the new Rust mangling scheme. Signed-off-by: David Wood --- compiler/rustc_session/src/config.rs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/compiler/rustc_session/src/config.rs b/compiler/rustc_session/src/config.rs index 60e1b465ba96d..b0e583725d30f 100644 --- a/compiler/rustc_session/src/config.rs +++ b/compiler/rustc_session/src/config.rs @@ -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) } }