rust/src/test/incremental/hashes/let_expressions.rs

// This test case tests the incremental compilation hash (ICH) implementation
// for let expressions.

// The general pattern followed here is: Change one thing between rev1 and rev2
// and make sure that the hash has changed, then change nothing between rev2 and
// rev3 and make sure that the hash has not changed.

// compile-pass
// revisions: cfail1 cfail2 cfail3
// compile-flags: -Z query-dep-graph -Zincremental-ignore-spans


#![allow(warnings)]
#![feature(rustc_attrs)]
#![crate_type="rlib"]

// Change Name -----------------------------------------------------------------
#[cfg(cfail1)]
pub fn change_name() {
    let _x = 2u64;
}

#[cfg(not(cfail1))]
#[rustc_clean(cfg="cfail2",
    except="HirBody,mir_built,optimized_mir")]
#[rustc_clean(cfg="cfail3")]
pub fn change_name() {
    let _y = 2u64;
}



// Add Type --------------------------------------------------------------------
#[cfg(cfail1)]
pub fn add_type() {
    let _x = 2u32;
}

#[cfg(not(cfail1))]
#[rustc_clean(cfg="cfail2",
    except="HirBody,typeck_tables_of,mir_built,optimized_mir")]
#[rustc_clean(cfg="cfail3")]
pub fn add_type() {
    let _x: u32 = 2u32;
}



// Change Type -----------------------------------------------------------------
#[cfg(cfail1)]
pub fn change_type() {
    let _x: u64 = 2;
}

#[cfg(not(cfail1))]
#[rustc_clean(cfg="cfail2",
    except="HirBody,typeck_tables_of,mir_built,optimized_mir")]
#[rustc_clean(cfg="cfail3")]
pub fn change_type() {
    let _x: u8 = 2;
}



// Change Mutability of Reference Type -----------------------------------------
#[cfg(cfail1)]
pub fn change_mutability_of_reference_type() {
    let _x: &u64;
}

#[cfg(not(cfail1))]
#[rustc_clean(cfg="cfail2",
    except="HirBody,typeck_tables_of,mir_built,optimized_mir")]
#[rustc_clean(cfg="cfail3")]
pub fn change_mutability_of_reference_type() {
    let _x: &mut u64;
}



// Change Mutability of Slot ---------------------------------------------------
#[cfg(cfail1)]
pub fn change_mutability_of_slot() {
    let mut _x: u64 = 0;
}

#[cfg(not(cfail1))]
#[rustc_clean(cfg="cfail2",
    except="HirBody,typeck_tables_of,mir_built,optimized_mir")]
#[rustc_clean(cfg="cfail3")]
pub fn change_mutability_of_slot() {
    let _x: u64 = 0;
}



// Change Simple Binding to Pattern --------------------------------------------
#[cfg(cfail1)]
pub fn change_simple_binding_to_pattern() {
    let _x = (0u8, 'x');
}

#[cfg(not(cfail1))]
#[rustc_clean(cfg="cfail2",
    except="HirBody,typeck_tables_of,mir_built,optimized_mir")]
#[rustc_clean(cfg="cfail3")]
pub fn change_simple_binding_to_pattern() {
    let (_a, _b) = (0u8, 'x');
}



// Change Name in Pattern ------------------------------------------------------
#[cfg(cfail1)]
pub fn change_name_in_pattern() {
    let (_a, _b) = (1u8, 'y');
}

#[cfg(not(cfail1))]
#[rustc_clean(cfg="cfail2",
    except="HirBody,mir_built,optimized_mir")]
#[rustc_clean(cfg="cfail3")]
pub fn change_name_in_pattern() {
    let (_a, _c) = (1u8, 'y');
}



// Add `ref` in Pattern --------------------------------------------------------
#[cfg(cfail1)]
pub fn add_ref_in_pattern() {
    let (_a, _b) = (1u8, 'y');
}

#[cfg(not(cfail1))]
#[rustc_clean(cfg="cfail2",
    except="HirBody,typeck_tables_of,mir_built,optimized_mir")]
#[rustc_clean(cfg="cfail3")]
pub fn add_ref_in_pattern() {
    let (ref _a, _b) = (1u8, 'y');
}



// Add `&` in Pattern ----------------------------------------------------------
#[cfg(cfail1)]
pub fn add_amp_in_pattern() {
    let (_a, _b) = (&1u8, 'y');
}

#[cfg(not(cfail1))]
#[rustc_clean(cfg="cfail2",
    except="HirBody,typeck_tables_of,mir_built,optimized_mir")]
#[rustc_clean(cfg="cfail3")]
pub fn add_amp_in_pattern() {
    let (&_a, _b) = (&1u8, 'y');
}



// Change Mutability of Binding in Pattern -------------------------------------
#[cfg(cfail1)]
pub fn change_mutability_of_binding_in_pattern() {
    let (_a, _b) = (99u8, 'q');
}

#[cfg(not(cfail1))]
#[rustc_clean(cfg="cfail2",
    except="HirBody,typeck_tables_of,mir_built,optimized_mir")]
#[rustc_clean(cfg="cfail3")]
pub fn change_mutability_of_binding_in_pattern() {
    let (mut _a, _b) = (99u8, 'q');
}



// Add Initializer -------------------------------------------------------------
#[cfg(cfail1)]
pub fn add_initializer() {
    let _x: i16;
}

#[cfg(not(cfail1))]
#[rustc_clean(cfg="cfail2",
    except="HirBody,typeck_tables_of,mir_built,optimized_mir")]
#[rustc_clean(cfg="cfail3")]
pub fn add_initializer() {
    let _x: i16 = 3i16;
}



// Change Initializer ----------------------------------------------------------
#[cfg(cfail1)]
pub fn change_initializer() {
    let _x = 4u16;
}

#[cfg(not(cfail1))]
#[rustc_clean(cfg="cfail2",
    except="HirBody,mir_built,optimized_mir")]
#[rustc_clean(cfg="cfail3")]
pub fn change_initializer() {
    let _x = 5u16;
}