From 5dbd97de3d825c6898df62baca33ff1f57cb77eb Mon Sep 17 00:00:00 2001 From: Alex Crichton Date: Wed, 21 Jun 2017 12:08:18 -0700 Subject: rustc: Implement stack probes for x86 This commit implements stack probes on x86/x86_64 using the freshly landed support upstream in LLVM. The purpose of stack probes here are to guarantee a segfault on stack overflow rather than having a chance of running over the guard page already present on all threads by accident. At this time there's no support for any other architecture because LLVM itself does not have support for other architectures. --- src/test/codegen/stack-probes.rs | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) create mode 100644 src/test/codegen/stack-probes.rs (limited to 'src/test/codegen/stack-probes.rs') diff --git a/src/test/codegen/stack-probes.rs b/src/test/codegen/stack-probes.rs new file mode 100644 index 00000000000..b7c794f4475 --- /dev/null +++ b/src/test/codegen/stack-probes.rs @@ -0,0 +1,24 @@ +// Copyright 2016 The Rust Project Developers. See the COPYRIGHT +// file at the top-level directory of this distribution and at +// http://rust-lang.org/COPYRIGHT. +// +// Licensed under the Apache License, Version 2.0 or the MIT license +// , at your +// option. This file may not be copied, modified, or distributed +// except according to those terms. + +// ignore-arm +// ignore-wasm +// ignore-emscripten +// ignore-windows +// no-system-llvm +// compile-flags: -C no-prepopulate-passes + +#![crate_type = "lib"] + +#[no_mangle] +pub fn foo() { +// CHECK: @foo() unnamed_addr #0 +// CHECK: attributes #0 = { {{.*}}"probe-stack"="__rust_probestack"{{.*}} } +} -- cgit 1.4.1-3-g733a5