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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:20:29 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:20:29 +0000 |
commit | 631cd5845e8de329d0e227aaa707d7ea228b8f8f (patch) | |
tree | a1b87c8f8cad01cf18f7c5f57a08f102771ed303 /tests/run-make/extern-fn-with-union | |
parent | Adding debian version 1.69.0+dfsg1-1. (diff) | |
download | rustc-631cd5845e8de329d0e227aaa707d7ea228b8f8f.tar.xz rustc-631cd5845e8de329d0e227aaa707d7ea228b8f8f.zip |
Merging upstream version 1.70.0+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/run-make/extern-fn-with-union')
-rw-r--r-- | tests/run-make/extern-fn-with-union/Makefile | 7 | ||||
-rw-r--r-- | tests/run-make/extern-fn-with-union/ctest.c | 10 | ||||
-rw-r--r-- | tests/run-make/extern-fn-with-union/test.rs | 19 | ||||
-rw-r--r-- | tests/run-make/extern-fn-with-union/testcrate.rs | 11 |
4 files changed, 47 insertions, 0 deletions
diff --git a/tests/run-make/extern-fn-with-union/Makefile b/tests/run-make/extern-fn-with-union/Makefile new file mode 100644 index 000000000..e6c8c9936 --- /dev/null +++ b/tests/run-make/extern-fn-with-union/Makefile @@ -0,0 +1,7 @@ +# ignore-cross-compile +include ../tools.mk + +all: $(call NATIVE_STATICLIB,ctest) + $(RUSTC) testcrate.rs + $(RUSTC) test.rs + $(call RUN,test) || exit 1 diff --git a/tests/run-make/extern-fn-with-union/ctest.c b/tests/run-make/extern-fn-with-union/ctest.c new file mode 100644 index 000000000..86cb64537 --- /dev/null +++ b/tests/run-make/extern-fn-with-union/ctest.c @@ -0,0 +1,10 @@ +#include <stdio.h> +#include <stdint.h> + +typedef union TestUnion { + uint64_t bits; +} TestUnion; + +uint64_t give_back(TestUnion tu) { + return tu.bits; +} diff --git a/tests/run-make/extern-fn-with-union/test.rs b/tests/run-make/extern-fn-with-union/test.rs new file mode 100644 index 000000000..438fbddf3 --- /dev/null +++ b/tests/run-make/extern-fn-with-union/test.rs @@ -0,0 +1,19 @@ +extern crate testcrate; + +use std::mem; + +extern "C" { + fn give_back(tu: testcrate::TestUnion) -> u64; +} + +fn main() { + let magic: u64 = 0xDEADBEEF; + + // Let's test calling it cross crate + let back = unsafe { testcrate::give_back(mem::transmute(magic)) }; + assert_eq!(magic, back); + + // And just within this crate + let back = unsafe { give_back(mem::transmute(magic)) }; + assert_eq!(magic, back); +} diff --git a/tests/run-make/extern-fn-with-union/testcrate.rs b/tests/run-make/extern-fn-with-union/testcrate.rs new file mode 100644 index 000000000..28d91ff37 --- /dev/null +++ b/tests/run-make/extern-fn-with-union/testcrate.rs @@ -0,0 +1,11 @@ +#![crate_type = "lib"] + +#[repr(C)] +pub struct TestUnion { + _val: u64, +} + +#[link(name = "ctest", kind = "static")] +extern "C" { + pub fn give_back(tu: TestUnion) -> u64; +} |