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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:18:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:18:58 +0000 |
commit | a4b7ed7a42c716ab9f05e351f003d589124fd55d (patch) | |
tree | b620cd3f223850b28716e474e80c58059dca5dd4 /tests/ui/issues/issue-2214.rs | |
parent | Adding upstream version 1.67.1+dfsg1. (diff) | |
download | rustc-a4b7ed7a42c716ab9f05e351f003d589124fd55d.tar.xz rustc-a4b7ed7a42c716ab9f05e351f003d589124fd55d.zip |
Adding upstream version 1.68.2+dfsg1.upstream/1.68.2+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/issues/issue-2214.rs')
-rw-r--r-- | tests/ui/issues/issue-2214.rs | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/tests/ui/issues/issue-2214.rs b/tests/ui/issues/issue-2214.rs new file mode 100644 index 000000000..1994c3515 --- /dev/null +++ b/tests/ui/issues/issue-2214.rs @@ -0,0 +1,41 @@ +// run-pass +// ignore-wasm32-bare no libc to test ffi with +// ignore-sgx no libc +#![feature(rustc_private)] + +extern crate libc; + +use libc::{c_double, c_int}; +use std::mem; + +fn to_c_int(v: &mut isize) -> &mut c_int { + unsafe { mem::transmute_copy(&v) } +} + +fn lgamma(n: c_double, value: &mut isize) -> c_double { + unsafe { + return m::lgamma(n, to_c_int(value)); + } +} + +mod m { + use libc::{c_double, c_int}; + + extern "C" { + #[cfg(all(unix, not(target_os = "vxworks")))] + #[link_name="lgamma_r"] + pub fn lgamma(n: c_double, sign: &mut c_int) -> c_double; + #[cfg(windows)] + #[link_name = "lgamma"] + pub fn lgamma(n: c_double, sign: &mut c_int) -> c_double; + #[cfg(target_os = "vxworks")] + #[link_name = "lgamma"] + pub fn lgamma(n: c_double, sign: &mut c_int) -> c_double; + } +} + +pub fn main() { + let mut y: isize = 5; + let x: &mut isize = &mut y; + assert_eq!(lgamma(1.0 as c_double, x), 0.0 as c_double); +} |