diff --git a/library/std/src/lib.rs b/library/std/src/lib.rs index eae74ebcf055..92ff9216da95 100644 --- a/library/std/src/lib.rs +++ b/library/std/src/lib.rs @@ -15,9 +15,11 @@ pub use std::*; // Bind `core::assert` to a different name to avoid possible name conflicts if a // crate uses `extern crate std as core`. See // https://github.com/model-checking/kani/issues/1949 +#[cfg(not(feature = "concrete_playback"))] #[allow(unused_imports)] use core::assert as __kani__workaround_core_assert; +#[cfg(not(feature = "concrete_playback"))] // Override process calls with stubs. pub mod process; @@ -41,6 +43,7 @@ pub mod process; /// ``` /// the assert message will be: /// "The sum of {} and {} is {}", a, b, c +#[cfg(not(feature = "concrete_playback"))] #[macro_export] macro_rules! assert { ($cond:expr $(,)?) => { @@ -77,6 +80,7 @@ macro_rules! assert { // (see https://github.com/model-checking/kani/issues/13) // 3. Call kani::assert so that any instrumentation that it does (e.g. injecting // reachability checks) is done for assert_eq and assert_ne +#[cfg(not(feature = "concrete_playback"))] #[macro_export] macro_rules! assert_eq { ($left:expr, $right:expr $(,)?) => ({ @@ -89,6 +93,7 @@ macro_rules! assert_eq { }); } +#[cfg(not(feature = "concrete_playback"))] #[macro_export] macro_rules! assert_ne { ($left:expr, $right:expr $(,)?) => ({ @@ -102,16 +107,19 @@ macro_rules! assert_ne { } // Treat the debug assert macros same as non-debug ones +#[cfg(not(feature = "concrete_playback"))] #[macro_export] macro_rules! debug_assert { ($($x:tt)*) => ({ $crate::assert!($($x)*); }) } +#[cfg(not(feature = "concrete_playback"))] #[macro_export] macro_rules! debug_assert_eq { ($($x:tt)*) => ({ $crate::assert_eq!($($x)*); }) } +#[cfg(not(feature = "concrete_playback"))] #[macro_export] macro_rules! debug_assert_ne { ($($x:tt)*) => ({ $crate::assert_ne!($($x)*); }) @@ -119,28 +127,33 @@ macro_rules! debug_assert_ne { // Override the print macros to skip all the printing functionality (which // is not relevant for verification) +#[cfg(not(feature = "concrete_playback"))] #[macro_export] macro_rules! print { ($($x:tt)*) => {{ let _ = format_args!($($x)*); }}; } +#[cfg(not(feature = "concrete_playback"))] #[macro_export] macro_rules! eprint { ($($x:tt)*) => {{ let _ = format_args!($($x)*); }}; } +#[cfg(not(feature = "concrete_playback"))] #[macro_export] macro_rules! println { () => { }; ($($x:tt)*) => {{ let _ = format_args!($($x)*); }}; } +#[cfg(not(feature = "concrete_playback"))] #[macro_export] macro_rules! eprintln { () => { }; ($($x:tt)*) => {{ let _ = format_args!($($x)*); }}; } +#[cfg(not(feature = "concrete_playback"))] #[macro_export] macro_rules! unreachable { // The argument, if present, is a literal that represents the error message, i.e.: @@ -171,6 +184,7 @@ macro_rules! unreachable { stringify!($fmt, $($arg)*)))}}; } +#[cfg(not(feature = "concrete_playback"))] #[macro_export] macro_rules! panic { // No argument is given. diff --git a/tests/script-based-pre/playback_print/config.yml b/tests/script-based-pre/playback_print/config.yml new file mode 100644 index 000000000000..abda4b73edb7 --- /dev/null +++ b/tests/script-based-pre/playback_print/config.yml @@ -0,0 +1,4 @@ +# Copyright Kani Contributors +# SPDX-License-Identifier: Apache-2.0 OR MIT +script: playback_print.sh +expected: expected diff --git a/tests/script-based-pre/playback_print/expected b/tests/script-based-pre/playback_print/expected new file mode 100644 index 000000000000..b9a04bb58988 --- /dev/null +++ b/tests/script-based-pre/playback_print/expected @@ -0,0 +1,13 @@ +internal error: entered unreachable code: oops + +assertion `left == right` failed: Found 1 != 0 +left: 1 +right: 0 + +assertion `left == right` failed +left: 0 +right: 1 + +Found value 2 + +test result: FAILED. 0 passed; 4 failed diff --git a/tests/script-based-pre/playback_print/playback_print.sh b/tests/script-based-pre/playback_print/playback_print.sh new file mode 100755 index 000000000000..abcade64a218 --- /dev/null +++ b/tests/script-based-pre/playback_print/playback_print.sh @@ -0,0 +1,40 @@ +#!/usr/bin/env bash +# Copyright Kani Contributors +# SPDX-License-Identifier: Apache-2.0 OR MIT +# Test that concrete playback -Z concrete-playback does not override std print +# functions + +set -o nounset + +function error() { + echo $@ + # Cleanup + rm ${RS_FILE} + rm output.log + exit 1 +} + +RS_FILE="modified.rs" +cp print_vars.rs ${RS_FILE} +export RUSTFLAGS="--edition 2021" + +echo "[TEST] Generate test..." +kani ${RS_FILE} -Z concrete-playback --concrete-playback=inplace + +echo "[TEST] Run test..." +kani playback -Z concrete-playback ${RS_FILE} 2>&1 | tee output.log + +echo "------ Check output ----------" + +set -e +while read -r line; do + grep "${line}" output.log || error "Failed to find: \"${line}\"" +done < expected + +echo +echo "------ Output OK ----------" +echo + +# Cleanup +rm ${RS_FILE} +rm output.log diff --git a/tests/script-based-pre/playback_print/print_vars.rs b/tests/script-based-pre/playback_print/print_vars.rs new file mode 100644 index 000000000000..07457cbe9957 --- /dev/null +++ b/tests/script-based-pre/playback_print/print_vars.rs @@ -0,0 +1,20 @@ +// Copyright Kani Contributors +// SPDX-License-Identifier: Apache-2.0 OR MIT +// +// compile-flags: --edition 2021 +// kani-flags: playback + +#[kani::proof] +pub fn harness() { + let v1: u32 = kani::any(); + let v2: u32 = kani::any(); + // avoid direct assignments to v1 to block constant propagation. + kani::assume(v1 == v2); + + match v2 { + 0 => assert_eq!(v1, 1), + 1 => assert_eq!(v1, 0, "Found {v1} != 0"), + 2 => panic!("Found value {v1}"), + _ => unreachable!("oops"), + } +}