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|
#![allow(unused_assignments, unused_variables)]
// compile-flags: -C opt-level=2
// This test used to be sensitive to certain coverage-specific hacks in
// `rustc_middle/mir/mono.rs`, but those hacks were later cleaned up by
// <https://github.com/rust-lang/rust/pull/83666>.
fn main() {
// Initialize test constants in a way that cannot be determined at compile time, to ensure
// rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
// dependent conditions.
let is_true = std::env::args().len() == 1;
let is_false = !is_true;
let mut some_string = Some(String::from("the string content"));
println!(
"The string or alt: {}"
,
some_string
.
unwrap_or_else
(
||
{
let mut countdown = 0;
if is_false {
countdown = 10;
}
"alt string 1".to_owned()
}
)
);
some_string = Some(String::from("the string content"));
let
a
=
||
{
let mut countdown = 0;
if is_false {
countdown = 10;
}
"alt string 2".to_owned()
};
println!(
"The string or alt: {}"
,
some_string
.
unwrap_or_else
(
a
)
);
some_string = None;
println!(
"The string or alt: {}"
,
some_string
.
unwrap_or_else
(
||
{
let mut countdown = 0;
if is_false {
countdown = 10;
}
"alt string 3".to_owned()
}
)
);
some_string = None;
let
a
=
||
{
let mut countdown = 0;
if is_false {
countdown = 10;
}
"alt string 4".to_owned()
};
println!(
"The string or alt: {}"
,
some_string
.
unwrap_or_else
(
a
)
);
let
quote_closure
=
|val|
{
let mut countdown = 0;
if is_false {
countdown = 10;
}
format!("'{}'", val)
};
println!(
"Repeated, quoted string: {:?}"
,
std::iter::repeat("repeat me")
.take(5)
.map
(
quote_closure
)
.collect::<Vec<_>>()
);
let
_unused_closure
=
|
mut countdown
|
{
if is_false {
countdown = 10;
}
"closure should be unused".to_owned()
};
let mut countdown = 10;
let _short_unused_closure = | _unused_arg: u8 | countdown += 1;
let short_used_covered_closure_macro = | used_arg: u8 | println!("called");
let short_used_not_covered_closure_macro = | used_arg: u8 | println!("not called");
let _short_unused_closure_macro = | _unused_arg: u8 | println!("not called");
let _short_unused_closure_block = | _unused_arg: u8 | { println!("not called") };
let _shortish_unused_closure = | _unused_arg: u8 | {
println!("not called")
};
let _as_short_unused_closure = |
_unused_arg: u8
| { println!("not called") };
let _almost_as_short_unused_closure = |
_unused_arg: u8
| { println!("not called") }
;
let _short_unused_closure_line_break_no_block = | _unused_arg: u8 |
println!("not called")
;
let _short_unused_closure_line_break_no_block2 =
| _unused_arg: u8 |
println!(
"not called"
)
;
let short_used_not_covered_closure_line_break_no_block_embedded_branch =
| _unused_arg: u8 |
println!(
"not called: {}",
if is_true { "check" } else { "me" }
)
;
let short_used_not_covered_closure_line_break_block_embedded_branch =
| _unused_arg: u8 |
{
println!(
"not called: {}",
if is_true { "check" } else { "me" }
)
}
;
let short_used_covered_closure_line_break_no_block_embedded_branch =
| _unused_arg: u8 |
println!(
"not called: {}",
if is_true { "check" } else { "me" }
)
;
let short_used_covered_closure_line_break_block_embedded_branch =
| _unused_arg: u8 |
{
println!(
"not called: {}",
if is_true { "check" } else { "me" }
)
}
;
if is_false {
short_used_not_covered_closure_macro(0);
short_used_not_covered_closure_line_break_no_block_embedded_branch(0);
short_used_not_covered_closure_line_break_block_embedded_branch(0);
}
short_used_covered_closure_macro(0);
short_used_covered_closure_line_break_no_block_embedded_branch(0);
short_used_covered_closure_line_break_block_embedded_branch(0);
}
|
