diff options
| -rw-r--r-- | clippy_lints/src/large_enum_variant.rs | 4 | ||||
| -rw-r--r-- | tests/ui/auxiliary/macro_rules.rs | 10 | ||||
| -rw-r--r-- | tests/ui/large_enum_variant.rs | 9 | ||||
| -rw-r--r-- | tests/ui/large_enum_variant.stderr | 18 |
4 files changed, 31 insertions, 10 deletions
diff --git a/clippy_lints/src/large_enum_variant.rs b/clippy_lints/src/large_enum_variant.rs index 3c7880d74ee..ad9b4f357a7 100644 --- a/clippy_lints/src/large_enum_variant.rs +++ b/clippy_lints/src/large_enum_variant.rs @@ -4,6 +4,7 @@ use crate::utils::{snippet_opt, span_lint_and_then}; use rustc_errors::Applicability; use rustc_hir::{Item, ItemKind, VariantData}; use rustc_lint::{LateContext, LateLintPass}; +use rustc_middle::lint::in_external_macro; use rustc_session::{declare_tool_lint, impl_lint_pass}; use rustc_target::abi::LayoutOf; @@ -58,6 +59,9 @@ impl_lint_pass!(LargeEnumVariant => [LARGE_ENUM_VARIANT]); impl<'tcx> LateLintPass<'tcx> for LargeEnumVariant { fn check_item(&mut self, cx: &LateContext<'_>, item: &Item<'_>) { + if in_external_macro(cx.tcx.sess, item.span) { + return; + } let did = cx.tcx.hir().local_def_id(item.hir_id); if let ItemKind::Enum(ref def, _) = item.kind { let ty = cx.tcx.type_of(did); diff --git a/tests/ui/auxiliary/macro_rules.rs b/tests/ui/auxiliary/macro_rules.rs index f985a15eda2..18324823468 100644 --- a/tests/ui/auxiliary/macro_rules.rs +++ b/tests/ui/auxiliary/macro_rules.rs @@ -84,3 +84,13 @@ macro_rules! as_conv { 0u32 as u64 }; } + +#[macro_export] +macro_rules! large_enum_variant { + () => { + enum LargeEnumInMacro { + A(i32), + B([i32; 8000]), + } + }; +} diff --git a/tests/ui/large_enum_variant.rs b/tests/ui/large_enum_variant.rs index 852ef5fec0e..d22fee3f27b 100644 --- a/tests/ui/large_enum_variant.rs +++ b/tests/ui/large_enum_variant.rs @@ -1,7 +1,12 @@ +// aux-build:macro_rules.rs + #![allow(dead_code)] #![allow(unused_variables)] #![warn(clippy::large_enum_variant)] +#[macro_use] +extern crate macro_rules; + enum LargeEnum { A(i32), B([i32; 8000]), @@ -51,4 +56,6 @@ enum LargeEnumOk { LargeB([i32; 8001]), } -fn main() {} +fn main() { + large_enum_variant!(); +} diff --git a/tests/ui/large_enum_variant.stderr b/tests/ui/large_enum_variant.stderr index 8ce641a81f2..d39a4d462aa 100644 --- a/tests/ui/large_enum_variant.stderr +++ b/tests/ui/large_enum_variant.stderr @@ -1,12 +1,12 @@ error: large size difference between variants - --> $DIR/large_enum_variant.rs:7:5 + --> $DIR/large_enum_variant.rs:12:5 | LL | B([i32; 8000]), | ^^^^^^^^^^^^^^ this variant is 32000 bytes | = note: `-D clippy::large-enum-variant` implied by `-D warnings` note: and the second-largest variant is 4 bytes: - --> $DIR/large_enum_variant.rs:6:5 + --> $DIR/large_enum_variant.rs:11:5 | LL | A(i32), | ^^^^^^ @@ -16,13 +16,13 @@ LL | B(Box<[i32; 8000]>), | ^^^^^^^^^^^^^^^^ error: large size difference between variants - --> $DIR/large_enum_variant.rs:31:5 + --> $DIR/large_enum_variant.rs:36:5 | LL | ContainingLargeEnum(LargeEnum), | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this variant is 32004 bytes | note: and the second-largest variant is 8 bytes: - --> $DIR/large_enum_variant.rs:30:5 + --> $DIR/large_enum_variant.rs:35:5 | LL | VariantOk(i32, u32), | ^^^^^^^^^^^^^^^^^^^ @@ -32,30 +32,30 @@ LL | ContainingLargeEnum(Box<LargeEnum>), | ^^^^^^^^^^^^^^ error: large size difference between variants - --> $DIR/large_enum_variant.rs:41:5 + --> $DIR/large_enum_variant.rs:46:5 | LL | StructLikeLarge { x: [i32; 8000], y: i32 }, | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this variant is 32004 bytes | note: and the second-largest variant is 8 bytes: - --> $DIR/large_enum_variant.rs:40:5 + --> $DIR/large_enum_variant.rs:45:5 | LL | VariantOk(i32, u32), | ^^^^^^^^^^^^^^^^^^^ help: consider boxing the large fields to reduce the total size of the enum - --> $DIR/large_enum_variant.rs:41:5 + --> $DIR/large_enum_variant.rs:46:5 | LL | StructLikeLarge { x: [i32; 8000], y: i32 }, | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: large size difference between variants - --> $DIR/large_enum_variant.rs:46:5 + --> $DIR/large_enum_variant.rs:51:5 | LL | StructLikeLarge2 { x: [i32; 8000] }, | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this variant is 32000 bytes | note: and the second-largest variant is 8 bytes: - --> $DIR/large_enum_variant.rs:45:5 + --> $DIR/large_enum_variant.rs:50:5 | LL | VariantOk(i32, u32), | ^^^^^^^^^^^^^^^^^^^ |