parser: Collect tokens for values in key-value attributes

4 files changed, 14 insertions, 2 deletions

diff --git a/src/test/ui/ast-json/ast-json-noexpand-output.stdout b/src/test/ui/ast-json/ast-json-noexpand-output.stdout
index 9c29a5f2337..02342af8dc5 100644
--- a/src/test/ui/ast-json/ast-json-noexpand-output.stdout
+++ b/src/test/ui/ast-json/ast-json-noexpand-output.stdout
@@ -1 +1 @@
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diff --git a/src/test/ui/ast-json/ast-json-output.stdout b/src/test/ui/ast-json/ast-json-output.stdout
index cccd51985dc..235f39c567b 100644
--- a/src/test/ui/ast-json/ast-json-output.stdout
+++ b/src/test/ui/ast-json/ast-json-output.stdout
@@ -1 +1 @@
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diff --git a/src/test/ui/attributes/key-value-non-ascii.rs b/src/test/ui/attributes/key-value-non-ascii.rs
new file mode 100644
index 00000000000..91c917e7db5
--- /dev/null
+++ b/src/test/ui/attributes/key-value-non-ascii.rs
@@ -0,0 +1,4 @@
+#![feature(rustc_attrs)]
+
+#[rustc_dummy = b"ffi.rs"] //~ ERROR byte constant must be ASCII
+fn main() {}
diff --git a/src/test/ui/attributes/key-value-non-ascii.stderr b/src/test/ui/attributes/key-value-non-ascii.stderr
new file mode 100644
index 00000000000..3e082139f89
--- /dev/null
+++ b/src/test/ui/attributes/key-value-non-ascii.stderr
@@ -0,0 +1,8 @@
+error: byte constant must be ASCII. Use a \xHH escape for a non-ASCII byte
+  --> $DIR/key-value-non-ascii.rs:3:19
+   |
+LL | #[rustc_dummy = b"ffi.rs"]
+   |                   ^
+
+error: aborting due to previous error
+