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