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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /src/test/ui/abi/extern/extern-call-scrub.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/ui/abi/extern/extern-call-scrub.rs')
-rw-r--r-- | src/test/ui/abi/extern/extern-call-scrub.rs | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/src/test/ui/abi/extern/extern-call-scrub.rs b/src/test/ui/abi/extern/extern-call-scrub.rs new file mode 100644 index 000000000..ff33cf31a --- /dev/null +++ b/src/test/ui/abi/extern/extern-call-scrub.rs @@ -0,0 +1,45 @@ +// run-pass +#![allow(unused_must_use)] +// This time we're testing repeatedly going up and down both stacks to +// make sure the stack pointers are maintained properly in both +// directions + +// ignore-emscripten no threads support +#![feature(rustc_private)] + +extern crate libc; +use std::thread; + +mod rustrt { + extern crate libc; + + #[link(name = "rust_test_helpers", kind = "static")] + extern "C" { + pub fn rust_dbg_call( + cb: extern "C" fn(libc::uintptr_t) -> libc::uintptr_t, + data: libc::uintptr_t, + ) -> libc::uintptr_t; + } +} + +extern "C" fn cb(data: libc::uintptr_t) -> libc::uintptr_t { + if data == 1 { data } else { count(data - 1) + count(data - 1) } +} + +fn count(n: libc::uintptr_t) -> libc::uintptr_t { + unsafe { + println!("n = {}", n); + rustrt::rust_dbg_call(cb, n) + } +} + +pub fn main() { + // Make sure we're on a thread with small Rust stacks (main currently + // has a large stack) + thread::spawn(move || { + let result = count(12); + println!("result = {}", result); + assert_eq!(result, 2048); + }) + .join(); +} |