diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:18:58 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:18:58 +0000 |
commit | a4b7ed7a42c716ab9f05e351f003d589124fd55d (patch) | |
tree | b620cd3f223850b28716e474e80c58059dca5dd4 /tests/ui/unsafe/unsafe-fn-autoderef.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/unsafe/unsafe-fn-autoderef.rs')
-rw-r--r-- | tests/ui/unsafe/unsafe-fn-autoderef.rs | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/tests/ui/unsafe/unsafe-fn-autoderef.rs b/tests/ui/unsafe/unsafe-fn-autoderef.rs new file mode 100644 index 000000000..60460fc6e --- /dev/null +++ b/tests/ui/unsafe/unsafe-fn-autoderef.rs @@ -0,0 +1,23 @@ +struct Rec { + f: isize +} + +fn f(p: *const Rec) -> isize { + + // Test that * ptrs do not autoderef. There is a deeper reason for + // prohibiting this, beyond making unsafe things annoying (which doesn't + // actually seem desirable to me). The deeper reason is that if you + // have a type like: + // + // enum foo = *foo; + // + // you end up with an infinite auto-deref chain, which is + // currently impossible (in all other cases, infinite auto-derefs + // are prohibited by various checks, such as that the enum is + // instantiable and so forth). + + return p.f; //~ ERROR no field `f` on type `*const Rec` +} + +fn main() { +} |