rust/tests/ui/fmt/issue-89173.rs
2023-01-11 09:32:08 +00:00

15 lines
567 B
Rust

// Regression test for #89173: Make sure a helpful note is issued for
// printf-style format strings using `*` to specify the width.
fn main() {
let num = 0x0abcde;
let width = 6;
print!("%0*x", width, num);
//~^ ERROR: multiple unused formatting arguments
//~| NOTE: multiple missing formatting specifiers
//~| NOTE: argument never used
//~| NOTE: argument never used
//~| NOTE: format specifiers use curly braces, and you have to use a positional or named parameter for the width
//~| NOTE: printf formatting is not supported
}