From ddee45e1d7fd34563c13513d974f792fae41a2f7 Mon Sep 17 00:00:00 2001 From: Martin Nordholts Date: Tue, 5 Jul 2022 19:56:22 +0200 Subject: Support `#[unix_sigpipe = "inherit|sig_dfl|sig_ign"]` on `fn main()` This makes it possible to instruct libstd to never touch the signal handler for `SIGPIPE`, which makes programs pipeable by default (e.g. with `./your-program | head -n 1`) without `ErrorKind::BrokenPipe` errors. --- compiler/rustc_feature/src/active.rs | 2 ++ compiler/rustc_feature/src/builtin_attrs.rs | 1 + 2 files changed, 3 insertions(+) (limited to 'compiler/rustc_feature') diff --git a/compiler/rustc_feature/src/active.rs b/compiler/rustc_feature/src/active.rs index 22178dd2123..89103a87623 100644 --- a/compiler/rustc_feature/src/active.rs +++ b/compiler/rustc_feature/src/active.rs @@ -519,6 +519,8 @@ declare_features! ( /// Allows creation of instances of a struct by moving fields that have /// not changed from prior instances of the same struct (RFC #2528) (active, type_changing_struct_update, "1.58.0", Some(86555), None), + /// Enables rustc to generate code that instructs libstd to NOT ignore SIGPIPE. + (active, unix_sigpipe, "CURRENT_RUSTC_VERSION", Some(97889), None), /// Allows unsized fn parameters. (active, unsized_fn_params, "1.49.0", Some(48055), None), /// Allows unsized rvalues at arguments and parameters. diff --git a/compiler/rustc_feature/src/builtin_attrs.rs b/compiler/rustc_feature/src/builtin_attrs.rs index d520efed9b8..00621341ee3 100644 --- a/compiler/rustc_feature/src/builtin_attrs.rs +++ b/compiler/rustc_feature/src/builtin_attrs.rs @@ -359,6 +359,7 @@ pub const BUILTIN_ATTRIBUTES: &[BuiltinAttribute] = &[ ), // Entry point: + gated!(unix_sigpipe, Normal, template!(Word, NameValueStr: "inherit|sig_ign|sig_dfl"), ErrorFollowing, experimental!(unix_sigpipe)), ungated!(start, Normal, template!(Word), WarnFollowing), ungated!(no_start, CrateLevel, template!(Word), WarnFollowing), ungated!(no_main, CrateLevel, template!(Word), WarnFollowing), -- cgit 1.4.1-3-g733a5