diff options
Diffstat (limited to 'tests/ui/parser/underscore-suffix-for-string.rs')
-rw-r--r-- | tests/ui/parser/underscore-suffix-for-string.rs | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/tests/ui/parser/underscore-suffix-for-string.rs b/tests/ui/parser/underscore-suffix-for-string.rs new file mode 100644 index 000000000..bd260752e --- /dev/null +++ b/tests/ui/parser/underscore-suffix-for-string.rs @@ -0,0 +1,17 @@ +macro_rules! sink { + ($tt:tt) => {()} +} + +fn main() { + let _ = "Foo"_; + //~^ ERROR underscore literal suffix is not allowed + + // This is ok, because `__` is a valid identifier and the macro consumes it + // before proper parsing happens. + let _ = sink!("Foo"__); + + // This is not ok, even as an input to a macro, because the `_` suffix is + // never allowed. + sink!("Foo"_); + //~^ ERROR underscore literal suffix is not allowed +} |