diff options
| author | Matthias Krüger <matthias.krueger@famsik.de> | 2024-08-05 05:40:21 +0200 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-08-05 05:40:21 +0200 |
| commit | 3c8b25905ce638ef8144a13ed30c6a6349bb5c06 (patch) | |
| tree | 3d034e185f72e8dca28eab6fb1c8cc3ee326a115 | |
| parent | e4367cec5ec622f0d79304e3ddbdf8628fa6d10c (diff) | |
| parent | 8497800abde9214041e11f35efdbfa437f761001 (diff) | |
| download | rust-3c8b25905ce638ef8144a13ed30c6a6349bb5c06.tar.gz rust-3c8b25905ce638ef8144a13ed30c6a6349bb5c06.zip | |
Rollup merge of #128500 - clubby789:122600-test, r=Mark-Simulacrum
Add test for updating enum discriminant through pointer Closes #122600
| -rw-r--r-- | tests/codegen/issues/issue-122600-ptr-discriminant-update.rs | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/tests/codegen/issues/issue-122600-ptr-discriminant-update.rs b/tests/codegen/issues/issue-122600-ptr-discriminant-update.rs new file mode 100644 index 00000000000..4b520a62069 --- /dev/null +++ b/tests/codegen/issues/issue-122600-ptr-discriminant-update.rs @@ -0,0 +1,19 @@ +//@ compile-flags: -O +//@ min-llvm-version: 19 + +#![crate_type = "lib"] + +pub enum State { + A([u8; 753]), + B([u8; 753]), +} + +// CHECK-LABEL: @update +#[no_mangle] +pub unsafe fn update(s: *mut State) { + // CHECK-NEXT: start: + // CHECK-NEXT: store i8 + // CHECK-NEXT: ret + let State::A(v) = s.read() else { std::hint::unreachable_unchecked() }; + s.write(State::B(v)); +} |