summaryrefslogtreecommitdiffstats
path: root/src/test/ui/pattern/issue-92074-macro-ice.rs
diff options
context:
space:
mode:
Diffstat (limited to 'src/test/ui/pattern/issue-92074-macro-ice.rs')
-rw-r--r--src/test/ui/pattern/issue-92074-macro-ice.rs36
1 files changed, 36 insertions, 0 deletions
diff --git a/src/test/ui/pattern/issue-92074-macro-ice.rs b/src/test/ui/pattern/issue-92074-macro-ice.rs
new file mode 100644
index 000000000..039d3b314
--- /dev/null
+++ b/src/test/ui/pattern/issue-92074-macro-ice.rs
@@ -0,0 +1,36 @@
+pub enum En {
+ A(Vec<u8>)
+}
+
+fn get_usize() -> usize {
+ 0
+}
+
+macro_rules! force_expr {
+ ($e:expr) => { $e }
+}
+
+macro_rules! force_pat {
+ ($a:expr, $b:expr) => { $a..=$b }
+}
+
+macro_rules! make_vec {
+ () => { force_expr!(Vec::new()) } //~ ERROR arbitrary expressions aren't allowed
+}
+
+macro_rules! make_pat {
+ () => { force_pat!(get_usize(), get_usize()) }
+ //~^ ERROR arbitrary expressions aren't allowed
+ //~| ERROR arbitrary expressions aren't allowed
+}
+
+#[allow(unreachable_code)]
+fn f() -> Result<(), impl core::fmt::Debug> {
+ let x: En = loop {};
+
+ assert!(matches!(x, En::A(make_vec!())));
+ assert!(matches!(5, make_pat!()));
+ Ok::<(), &'static str>(())
+}
+
+fn main() {}