diff options
Diffstat (limited to 'tests/ui/allocator/no_std-alloc-error-handler-default.rs')
-rw-r--r-- | tests/ui/allocator/no_std-alloc-error-handler-default.rs | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/tests/ui/allocator/no_std-alloc-error-handler-default.rs b/tests/ui/allocator/no_std-alloc-error-handler-default.rs new file mode 100644 index 000000000..56409e713 --- /dev/null +++ b/tests/ui/allocator/no_std-alloc-error-handler-default.rs @@ -0,0 +1,71 @@ +// run-pass +// ignore-android no libc +// ignore-emscripten no libc +// ignore-sgx no libc +// ignore-wasm32 no libc +// only-linux +// compile-flags:-C panic=abort +// aux-build:helper.rs + +#![feature(rustc_private, lang_items)] +#![no_std] +#![no_main] + +extern crate alloc; +extern crate libc; + +// ARM targets need these symbols +#[no_mangle] +pub fn __aeabi_unwind_cpp_pr0() {} + +#[no_mangle] +pub fn __aeabi_unwind_cpp_pr1() {} + +use alloc::boxed::Box; +use alloc::string::ToString; +use core::alloc::{GlobalAlloc, Layout}; +use core::ptr::null_mut; + +extern crate helper; + +struct MyAllocator; + +unsafe impl GlobalAlloc for MyAllocator { + unsafe fn alloc(&self, layout: Layout) -> *mut u8 { + if layout.size() < 4096 { libc::malloc(layout.size()) as _ } else { null_mut() } + } + unsafe fn dealloc(&self, _ptr: *mut u8, _layout: Layout) {} +} + +#[global_allocator] +static A: MyAllocator = MyAllocator; + +#[panic_handler] +fn panic(panic_info: &core::panic::PanicInfo) -> ! { + unsafe { + let s = panic_info.to_string(); + const PSTR: &str = "panic occurred: "; + const CR: &str = "\n"; + libc::write(libc::STDERR_FILENO, PSTR.as_ptr() as *const _, PSTR.len()); + libc::write(libc::STDERR_FILENO, s.as_ptr() as *const _, s.len()); + libc::write(libc::STDERR_FILENO, CR.as_ptr() as *const _, CR.len()); + libc::exit(0) + } +} + +// Because we are compiling this code with `-C panic=abort`, this wouldn't normally be needed. +// However, `core` and `alloc` are both compiled with `-C panic=unwind`, which means that functions +// in these libraries will refer to `rust_eh_personality` if LLVM can not *prove* the contents won't +// unwind. So, for this test case we will define the symbol. +#[lang = "eh_personality"] +extern "C" fn rust_eh_personality() {} + +#[derive(Default, Debug)] +struct Page(#[allow(unused_tuple_struct_fields)] [[u64; 32]; 16]); + +#[no_mangle] +fn main(_argc: i32, _argv: *const *const u8) -> isize { + let zero = Box::<Page>::new(Default::default()); + helper::work_with(&zero); + 1 +} |