diff options
Diffstat (limited to 'src/tools/clippy/tests/ui-toml/large_stack_frames')
3 files changed, 33 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui-toml/large_stack_frames/clippy.toml b/src/tools/clippy/tests/ui-toml/large_stack_frames/clippy.toml new file mode 100644 index 000000000..584335dc2 --- /dev/null +++ b/src/tools/clippy/tests/ui-toml/large_stack_frames/clippy.toml @@ -0,0 +1 @@ +stack-size-threshold = 1000 diff --git a/src/tools/clippy/tests/ui-toml/large_stack_frames/large_stack_frames.rs b/src/tools/clippy/tests/ui-toml/large_stack_frames/large_stack_frames.rs new file mode 100644 index 000000000..39798ffea --- /dev/null +++ b/src/tools/clippy/tests/ui-toml/large_stack_frames/large_stack_frames.rs @@ -0,0 +1,17 @@ +#![warn(clippy::large_stack_frames)] + +// We use this helper function instead of writing [0; 4294967297] directly to represent a +// case that large_stack_arrays can't catch +fn create_array<const N: usize>() -> [u8; N] { + [0; N] +} + +fn f() { + let _x = create_array::<1000>(); +} +fn f2() { + //~^ ERROR: this function allocates a large amount of stack space + let _x = create_array::<1001>(); +} + +fn main() {} diff --git a/src/tools/clippy/tests/ui-toml/large_stack_frames/large_stack_frames.stderr b/src/tools/clippy/tests/ui-toml/large_stack_frames/large_stack_frames.stderr new file mode 100644 index 000000000..67ee57ab6 --- /dev/null +++ b/src/tools/clippy/tests/ui-toml/large_stack_frames/large_stack_frames.stderr @@ -0,0 +1,15 @@ +error: this function allocates a large amount of stack space + --> $DIR/large_stack_frames.rs:12:1 + | +LL | / fn f2() { +LL | | +LL | | let _x = create_array::<1001>(); +LL | | } + | |_^ + | + = note: allocating large amounts of stack space can overflow the stack + = note: `-D clippy::large-stack-frames` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::large_stack_frames)]` + +error: aborting due to previous error + |