From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:02:58 +0200 Subject: Adding upstream version 1.64.0+dfsg1. Signed-off-by: Daniel Baumann --- .../example/alloc_example.rs | 38 ++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 compiler/rustc_codegen_cranelift/example/alloc_example.rs (limited to 'compiler/rustc_codegen_cranelift/example/alloc_example.rs') diff --git a/compiler/rustc_codegen_cranelift/example/alloc_example.rs b/compiler/rustc_codegen_cranelift/example/alloc_example.rs new file mode 100644 index 000000000..bc1594d82 --- /dev/null +++ b/compiler/rustc_codegen_cranelift/example/alloc_example.rs @@ -0,0 +1,38 @@ +#![feature(start, core_intrinsics, alloc_error_handler, box_syntax)] +#![no_std] + +extern crate alloc; +extern crate alloc_system; + +use alloc::boxed::Box; + +use alloc_system::System; + +#[global_allocator] +static ALLOC: System = System; + +#[cfg_attr(unix, link(name = "c"))] +#[cfg_attr(target_env = "msvc", link(name = "msvcrt"))] +extern "C" { + fn puts(s: *const u8) -> i32; +} + +#[panic_handler] +fn panic_handler(_: &core::panic::PanicInfo) -> ! { + core::intrinsics::abort(); +} + +#[alloc_error_handler] +fn alloc_error_handler(_: alloc::alloc::Layout) -> ! { + core::intrinsics::abort(); +} + +#[start] +fn main(_argc: isize, _argv: *const *const u8) -> isize { + let world: Box<&str> = box "Hello World!\0"; + unsafe { + puts(*world as *const str as *const u8); + } + + 0 +} -- cgit v1.2.3