public inbox for gcc-cvs@sourceware.org
help / color / mirror / Atom feed
From: Thomas Schwinge <tschwinge@gcc.gnu.org>
To: gcc-cvs@gcc.gnu.org
Subject: [gcc/devel/rust/master] Add testcase for const-eval issue from rust-blog
Date: Fri, 23 Sep 2022 06:51:55 +0000 (GMT)	[thread overview]
Message-ID: <20220923065155.2E7893857B8D@sourceware.org> (raw)

https://gcc.gnu.org/g:5f01d6c53734802955568771e75df68ffc2fd0d8

commit 5f01d6c53734802955568771e75df68ffc2fd0d8
Author: Philip Herron <philip.herron@embecosm.com>
Date:   Sun Sep 18 10:37:06 2022 +0100

    Add testcase for const-eval issue from rust-blog
    
    see:
    https://blog.rust-lang.org/2022/09/15/const-eval-safety-rule-revision.html

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;
+};

                 reply	other threads:[~2022-09-23  6:51 UTC|newest]

Thread overview: [no followups] expand[flat|nested]  mbox.gz  Atom feed

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20220923065155.2E7893857B8D@sourceware.org \
    --to=tschwinge@gcc.gnu.org \
    --cc=gcc-cvs@gcc.gnu.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).