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* [gcc r13-5566] gccrs: Add testcase for const-eval issue from rust-blog
@ 2023-01-31 13:16 Arthur Cohen
  0 siblings, 0 replies; only message in thread
From: Arthur Cohen @ 2023-01-31 13:16 UTC (permalink / raw)
  To: gcc-cvs

https://gcc.gnu.org/g:f92f8ee75bf0f4a653218a52698263b559c463a4

commit r13-5566-gf92f8ee75bf0f4a653218a52698263b559c463a4
Author: Philip Herron <philip.herron@embecosm.com>
Date:   Sun Sep 18 10:37:06 2022 +0100

    gccrs: Add testcase for const-eval issue from rust-blog
    
    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.

Diff:
---
 gcc/testsuite/rust/compile/rust-const-blog-issue.rs | 12 ++++++++++++
 1 file changed, 12 insertions(+)

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;
+};

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