diff options
Diffstat (limited to 'tests/ui/macros/missing-writer.rs')
-rw-r--r-- | tests/ui/macros/missing-writer.rs | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/tests/ui/macros/missing-writer.rs b/tests/ui/macros/missing-writer.rs new file mode 100644 index 000000000..7df965c36 --- /dev/null +++ b/tests/ui/macros/missing-writer.rs @@ -0,0 +1,17 @@ +// Check error for missing writer in writeln! and write! macro +fn main() { + let x = 1; + let y = 2; + write!("{}_{}", x, y); + //~^ ERROR format argument must be a string literal + //~| HELP you might be missing a string literal to format with + //~| ERROR cannot write into `&'static str` + //~| NOTE must implement `io::Write`, `fmt::Write`, or have a `write_fmt` method + //~| HELP a writer is needed before this format string + writeln!("{}_{}", x, y); + //~^ ERROR format argument must be a string literal + //~| HELP you might be missing a string literal to format with + //~| ERROR cannot write into `&'static str` + //~| NOTE must implement `io::Write`, `fmt::Write`, or have a `write_fmt` method + //~| HELP a writer is needed before this format string +} |