tests/ui/proc-macro/attr-stmt-expr-rpass.rs

   1 // run-pass
   2 // aux-build:attr-stmt-expr-rpass.rs
   3
   4 #![feature(stmt_expr_attributes, proc_macro_hygiene)]
   5
   6 extern crate attr_stmt_expr_rpass as attr_stmt_expr;
   7 use attr_stmt_expr::{expect_let, expect_print_stmt, expect_expr, expect_print_expr,
   8                      no_output, noop};
   9
  10 fn print_str(string: &'static str) {
  11     // macros are handled a bit differently
  12     #[expect_print_expr]
  13     println!("{}", string)
  14 }
  15
  16 fn main() {
  17     #[expect_let]
  18     let string = "Hello, world!";
  19
  20     #[expect_print_stmt]
  21     println!("{}", string);
  22
  23     let _: () = {
  24         #[no_output]
  25         "Hello, world!"
  26     };
  27
  28     let _: &'static str = #[noop] "Hello, world!";
  29
  30     let _: &'static str = {
  31         #[noop] "Hello, world!"
  32     };
  33
  34     #[expect_expr]
  35     print_str("string")
  36 }