From: Arthur Cohen <arthur.cohen@embecosm.com>
To: gcc-patches@gcc.gnu.org
Cc: gcc-rust@gcc.gnu.org, Philip Herron <philip.herron@embecosm.com>
Subject: [COMMITTED] gccrs: Add testcase for const-eval issue from rust-blog
Date: Tue, 31 Jan 2023 14:26:50 +0100 [thread overview]
Message-ID: <20230131132650.663517-1-arthur.cohen@embecosm.com> (raw)
From: Philip Herron <philip.herron@embecosm.com>
see:
https://blog.rust-lang.org/2022/09/15/const-eval-safety-rule-revision.html
gcc/testsuite/ChangeLog:
* rust/compile/rust-const-blog-issue.rs: New test.
Tested on x86_64-pc-linux-gnu, committed on master.
---
gcc/testsuite/rust/compile/rust-const-blog-issue.rs | 12 ++++++++++++
1 file changed, 12 insertions(+)
create mode 100644 gcc/testsuite/rust/compile/rust-const-blog-issue.rs
diff --git a/gcc/testsuite/rust/compile/rust-const-blog-issue.rs b/gcc/testsuite/rust/compile/rust-const-blog-issue.rs
new file mode 100644
index 00000000000..a5ea2ebacb9
--- /dev/null
+++ b/gcc/testsuite/rust/compile/rust-const-blog-issue.rs
@@ -0,0 +1,12 @@
+// { dg-excess-errors "accessing value of" }
+mod mem {
+ extern "rust-intrinsic" {
+ #[rustc_const_stable(feature = "const_transmute", since = "1.46.0")]
+ fn transmute<T, U>(_: T) -> U;
+ }
+}
+
+pub static FOO: () = unsafe {
+ let illegal_ptr2int: usize = mem::transmute(&());
+ let _copy = illegal_ptr2int;
+};
--
2.39.1
reply other threads:[~2023-01-31 13:23 UTC|newest]
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