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// Test unreachable_code lint for `try {}` block ok-wrapping. See issues #54165, #63324.
//@ compile-flags: --edition 2018
//@ check-pass
#![feature(try_blocks)]
#![warn(unreachable_code)]
fn err() -> Result<u32, ()> {
Err(())
}
// In the following cases unreachable code is autogenerated and should not be reported.
fn test_ok_wrapped_divergent_expr_1() {
let res: Result<u32, ()> = try {
loop {
err()?;
}
};
println!("res: {:?}", res);
}
fn test_ok_wrapped_divergent_expr_2() {
let _: Result<u32, ()> = try {
return
};
}
fn test_autogenerated_unit_after_divergent_expr() {
let _: Result<(), ()> = try {
return;
};
}
// In the following cases unreachable code should be reported.
fn test_try_block_after_divergent_stmt() {
let _: Result<u32, ()> = {
return;
try {
loop {
err()?;
}
}
//~^^^^^ WARNING unreachable expression
};
}
fn test_wrapped_divergent_expr() {
let _: Result<u32, ()> = {
Err(return)
//~^ WARNING unreachable call
};
}
fn test_expr_after_divergent_stmt_in_try_block() {
let res: Result<u32, ()> = try {
loop {
err()?;
}
42
//~^ WARNING unreachable expression
};
println!("res: {:?}", res);
}
fn main() {
test_ok_wrapped_divergent_expr_1();
test_ok_wrapped_divergent_expr_2();
test_autogenerated_unit_after_divergent_expr();
test_try_block_after_divergent_stmt();
test_wrapped_divergent_expr();
test_expr_after_divergent_stmt_in_try_block();
}
|
