diff options
| -rw-r--r-- | compiler/rustc_lint_defs/src/builtin.rs | 3 | ||||
| -rw-r--r-- | tests/ui/consts/timeout.rs | 25 | ||||
| -rw-r--r-- | tests/ui/consts/timeout.stderr | 15 |
3 files changed, 42 insertions, 1 deletions
diff --git a/compiler/rustc_lint_defs/src/builtin.rs b/compiler/rustc_lint_defs/src/builtin.rs index 53ece08ac3d..cbb4458d1d4 100644 --- a/compiler/rustc_lint_defs/src/builtin.rs +++ b/compiler/rustc_lint_defs/src/builtin.rs @@ -3464,7 +3464,8 @@ declare_lint! { /// out an update in your own time. pub LONG_RUNNING_CONST_EVAL, Deny, - "detects long const eval operations" + "detects long const eval operations", + report_in_external_macro } declare_lint! { diff --git a/tests/ui/consts/timeout.rs b/tests/ui/consts/timeout.rs new file mode 100644 index 00000000000..c9094999ee2 --- /dev/null +++ b/tests/ui/consts/timeout.rs @@ -0,0 +1,25 @@ +//! This test checks that external macros don't hide +//! the const eval timeout lint and then subsequently +//! ICE. + +// compile-flags: --crate-type=lib -Ztiny-const-eval-limit +// error-pattern: constant evaluation is taking a long time + +static ROOK_ATTACKS_TABLE: () = { + 0_u64.count_ones(); + 0_u64.count_ones(); + 0_u64.count_ones(); + 0_u64.count_ones(); + 0_u64.count_ones(); + 0_u64.count_ones(); + 0_u64.count_ones(); + 0_u64.count_ones(); + 0_u64.count_ones(); + 0_u64.count_ones(); + 0_u64.count_ones(); + 0_u64.count_ones(); + 0_u64.count_ones(); + 0_u64.count_ones(); + 0_u64.count_ones(); + 0_u64.count_ones(); +}; diff --git a/tests/ui/consts/timeout.stderr b/tests/ui/consts/timeout.stderr new file mode 100644 index 00000000000..799b5ec8dd9 --- /dev/null +++ b/tests/ui/consts/timeout.stderr @@ -0,0 +1,15 @@ +error: constant evaluation is taking a long time + --> $SRC_DIR/core/src/num/mod.rs:LL:COL + | + = note: this lint makes sure the compiler doesn't get stuck due to infinite loops in const eval. + If your compilation actually takes a long time, you can safely allow the lint. +help: the constant being evaluated + --> $DIR/timeout.rs:8:1 + | +LL | static ROOK_ATTACKS_TABLE: () = { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + = note: `#[deny(long_running_const_eval)]` on by default + = note: this error originates in the macro `uint_impl` (in Nightly builds, run with -Z macro-backtrace for more info) + +error: aborting due to previous error + |