cairo-lang-lowering 2.19.0

//! > Test panic in one of the match arms.

//! > test_runner_name
test_early_unsafe_panic

//! > function_code
fn foo(a: Option<u32>) -> u32 {
    match a {
        Some(x) => x,
        None => core::panic_with_felt252('error'),
    }
}

//! > function_name
foo

//! > semantic_diagnostics

//! > lowering_diagnostics

//! > before
Parameters: v0: core::option::Option::<core::integer::u32>
blk0 (root):
Statements:
End:
  Match(match_enum(v0) {
    Option::Some(v1) => blk1,
    Option::None(v2) => blk2,
  })

blk1:
Statements:
End:
  Return(v1)

blk2:
Statements:
  (v3: core::never) <- core::panic_with_const_felt252::<435711799154>()
End:
  Match(match_enum(v3) {
  })

//! > after
Parameters: v0: core::option::Option::<core::integer::u32>
blk0 (root):
Statements:
End:
  Match(match_enum(v0) {
    Option::Some(v1) => blk1,
    Option::None(v2) => blk2,
  })

blk1:
Statements:
End:
  Return(v1)

blk2:
Statements:
End:
  Match(match core::panics::unsafe_panic() {
  })

//! > ==========================================================================

//! > Test panic in root block.

//! > test_runner_name
test_early_unsafe_panic

//! > function_code
fn foo(a: Option<u32>) -> u32 {
    a.unwrap();
    core::panic_with_felt252('error')
}

//! > function_name
foo

//! > semantic_diagnostics

//! > lowering_diagnostics

//! > before
Parameters: v0: core::option::Option::<core::integer::u32>
blk0 (root):
Statements:
End:
  Match(match_enum(v0) {
    Option::Some(v1) => blk1,
    Option::None(v2) => blk2,
  })

blk1:
Statements:
  (v3: core::never) <- core::panic_with_const_felt252::<435711799154>()
End:
  Match(match_enum(v3) {
  })

blk2:
Statements:
  (v4: core::never) <- core::panic_with_const_felt252::<29721761890975875353235833581453094220424382983267374>()
End:
  Match(match_enum(v4) {
  })

//! > after
Parameters: v0: core::option::Option::<core::integer::u32>
blk0 (root):
Statements:
End:
  Match(match core::panics::unsafe_panic() {
  })

blk1:
Statements:
  (v3: core::never) <- core::panic_with_const_felt252::<435711799154>()
End:
  Match(match_enum(v3) {
  })

blk2:
Statements:
  (v4: core::never) <- core::panic_with_const_felt252::<29721761890975875353235833581453094220424382983267374>()
End:
  Match(match_enum(v4) {
  })

//! > ==========================================================================

//! > Test that a side-effecting statement (debug::print) before the dead tail is preserved.

//! > test_runner_name
test_early_unsafe_panic

//! > function_code
use core::debug::PrintTrait;

fn foo(a: Option<u32>) -> u32 {
    'error'.print();
    core::panic_with_felt252('error')
}

//! > function_name
foo

//! > semantic_diagnostics

//! > lowering_diagnostics

//! > before
Parameters: v0: core::option::Option::<core::integer::u32>
blk0 (root):
Statements:
  (v1: core::felt252) <- 435711799154
  (v2: core::array::Array::<core::felt252>) <- core::array::array_new::<core::felt252>()
  (v3: core::array::Array::<core::felt252>) <- core::array::array_append::<core::felt252>(v2, v1)
  () <- core::debug::print(v3)
  (v4: core::never) <- core::panic_with_const_felt252::<435711799154>()
End:
  Match(match_enum(v4) {
  })

//! > after
Parameters: v0: core::option::Option::<core::integer::u32>
blk0 (root):
Statements:
  (v1: core::felt252) <- 435711799154
  (v2: core::array::Array::<core::felt252>) <- core::array::array_new::<core::felt252>()
  (v3: core::array::Array::<core::felt252>) <- core::array::array_append::<core::felt252>(v2, v1)
  () <- core::debug::print(v3)
End:
  Match(match core::panics::unsafe_panic() {
  })

//! > ==========================================================================

//! > Test two side-effecting statements in a row before the dead tail are preserved.

//! > test_runner_name
test_early_unsafe_panic

//! > function_code
use core::debug::PrintTrait;

fn foo(a: Option<u32>) -> u32 {
    'error1'.print();
    'error2'.print();
    core::panic_with_felt252('error3')
}

//! > function_name
foo

//! > semantic_diagnostics

//! > lowering_diagnostics

//! > before
Parameters: v0: core::option::Option::<core::integer::u32>
blk0 (root):
Statements:
  (v1: core::felt252) <- 111542220583473
  (v2: core::array::Array::<core::felt252>) <- core::array::array_new::<core::felt252>()
  (v3: core::array::Array::<core::felt252>) <- core::array::array_append::<core::felt252>(v2, v1)
  () <- core::debug::print(v3)
  (v4: core::felt252) <- 111542220583474
  (v5: core::array::Array::<core::felt252>) <- core::array::array_new::<core::felt252>()
  (v6: core::array::Array::<core::felt252>) <- core::array::array_append::<core::felt252>(v5, v4)
  () <- core::debug::print(v6)
  (v7: core::never) <- core::panic_with_const_felt252::<111542220583475>()
End:
  Match(match_enum(v7) {
  })

//! > after
Parameters: v0: core::option::Option::<core::integer::u32>
blk0 (root):
Statements:
  (v1: core::felt252) <- 111542220583473
  (v2: core::array::Array::<core::felt252>) <- core::array::array_new::<core::felt252>()
  (v3: core::array::Array::<core::felt252>) <- core::array::array_append::<core::felt252>(v2, v1)
  () <- core::debug::print(v3)
  (v4: core::felt252) <- 111542220583474
  (v5: core::array::Array::<core::felt252>) <- core::array::array_new::<core::felt252>()
  (v6: core::array::Array::<core::felt252>) <- core::array::array_append::<core::felt252>(v5, v4)
  () <- core::debug::print(v6)
End:
  Match(match core::panics::unsafe_panic() {
  })