Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 20 insertions, 0 deletions

diff --git a/compiler/rustc_error_codes/src/error_codes/E0014.md b/compiler/rustc_error_codes/src/error_codes/E0014.md
new file mode 100644
index 000000000..2c69957e9
--- /dev/null
+++ b/compiler/rustc_error_codes/src/error_codes/E0014.md
@@ -0,0 +1,20 @@
+#### Note: this error code is no longer emitted by the compiler.
+
+Constants can only be initialized by a constant value or, in a future
+version of Rust, a call to a const function. This error indicates the use
+of a path (like a::b, or x) denoting something other than one of these
+allowed items.
+
+Erroneous code example:
+
+```
+const FOO: i32 = { let x = 0; x }; // 'x' isn't a constant nor a function!
+```
+
+To avoid it, you have to replace the non-constant value:
+
+```
+const FOO: i32 = { const X : i32 = 0; X };
+// or even:
+const FOO2: i32 = { 0 }; // but brackets are useless here
+```