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-rw-r--r--src/test/ui/macros/rfc-3086-metavar-expr/out-of-bounds-arguments.rs43
1 files changed, 43 insertions, 0 deletions
diff --git a/src/test/ui/macros/rfc-3086-metavar-expr/out-of-bounds-arguments.rs b/src/test/ui/macros/rfc-3086-metavar-expr/out-of-bounds-arguments.rs
new file mode 100644
index 000000000..6a0d68bd6
--- /dev/null
+++ b/src/test/ui/macros/rfc-3086-metavar-expr/out-of-bounds-arguments.rs
@@ -0,0 +1,43 @@
+#![feature(macro_metavar_expr)]
+
+macro_rules! a {
+ ( $( { $( [ $( ( $( $foo:ident )* ) )* ] )* } )* ) => {
+ (
+ ${count(foo, 0)},
+ ${count(foo, 10)},
+ //~^ ERROR depth parameter on meta-variable expression `count` must be less than 4
+ )
+ };
+}
+
+macro_rules! b {
+ ( $( { $( [ $( $foo:ident )* ] )* } )* ) => {
+ (
+ $( $( $(
+ ${ignore(foo)}
+ ${index(0)},
+ ${index(10)},
+ //~^ ERROR depth parameter on meta-variable expression `index` must be less than 3
+ )* )* )*
+ )
+ };
+}
+
+macro_rules! c {
+ ( $( { $( $foo:ident )* } )* ) => {
+ (
+ $( $(
+ ${ignore(foo)}
+ ${length(0)}
+ ${length(10)}
+ //~^ ERROR depth parameter on meta-variable expression `length` must be less than 2
+ )* )*
+ )
+ };
+}
+
+fn main() {
+ a!( { [ (a) ] [ (b c) ] } );
+ b!( { [ a b ] } );
+ c!({ a });
+}