mirror of
https://github.com/rust-lang/rust
synced 2024-11-05 20:45:15 +00:00
79 lines
2.9 KiB
Rust
79 lines
2.9 KiB
Rust
// revisions: noopt opt opt_with_overflow_checks
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//[noopt]compile-flags: -C opt-level=0
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//[opt]compile-flags: -O
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//[opt_with_overflow_checks]compile-flags: -C overflow-checks=on -O
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// build-pass
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// ignore-pass (test emits codegen-time warnings and verifies that they are not errors)
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// normalize-stderr-test "shift left by `(64|32)_usize`, which" -> "shift left by `%BITS%`, which"
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#![crate_type="lib"]
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#![warn(arithmetic_overflow)]
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pub trait Foo {
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const N: i32;
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}
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impl<T: Foo> Foo for Vec<T> {
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const N: i32 = T::N << 42; //~ WARN: arithmetic operation will overflow
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}
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pub fn foo(x: i32) {
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let _ = x << 42; //~ WARN: arithmetic operation will overflow
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}
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pub fn main() {
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let n = 1u8 << 7;
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let n = 1u8 << 8; //~ WARN: arithmetic operation will overflow
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let n = 1u16 << 15;
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let n = 1u16 << 16; //~ WARN: arithmetic operation will overflow
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let n = 1u32 << 31;
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let n = 1u32 << 32; //~ WARN: arithmetic operation will overflow
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let n = 1u64 << 63;
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let n = 1u64 << 64; //~ WARN: arithmetic operation will overflow
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let n = 1i8 << 7;
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let n = 1i8 << 8; //~ WARN: arithmetic operation will overflow
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let n = 1i16 << 15;
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let n = 1i16 << 16; //~ WARN: arithmetic operation will overflow
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let n = 1i32 << 31;
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let n = 1i32 << 32; //~ WARN: arithmetic operation will overflow
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let n = 1i64 << 63;
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let n = 1i64 << 64; //~ WARN: arithmetic operation will overflow
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let n = 1u8 >> 7;
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let n = 1u8 >> 8; //~ WARN: arithmetic operation will overflow
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let n = 1u16 >> 15;
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let n = 1u16 >> 16; //~ WARN: arithmetic operation will overflow
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let n = 1u32 >> 31;
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let n = 1u32 >> 32; //~ WARN: arithmetic operation will overflow
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let n = 1u64 >> 63;
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let n = 1u64 >> 64; //~ WARN: arithmetic operation will overflow
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let n = 1i8 >> 7;
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let n = 1i8 >> 8; //~ WARN: arithmetic operation will overflow
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let n = 1i16 >> 15;
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let n = 1i16 >> 16; //~ WARN: arithmetic operation will overflow
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let n = 1i32 >> 31;
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let n = 1i32 >> 32; //~ WARN: arithmetic operation will overflow
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let n = 1i64 >> 63;
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let n = 1i64 >> 64; //~ WARN: arithmetic operation will overflow
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let n = 1u8;
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let n = n << 7;
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let n = n << 8; //~ WARN: arithmetic operation will overflow
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let n = 1u8 << -8; //~ WARN: arithmetic operation will overflow
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let n = 1i8<<(1isize+-1);
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let n = 1u8 << (4+3);
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let n = 1u8 << (4+4); //~ WARN: arithmetic operation will overflow
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let n = 1i64 >> [63][0];
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let n = 1i64 >> [64][0]; //~ WARN: arithmetic operation will overflow
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#[cfg(target_pointer_width = "32")]
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const BITS: usize = 32;
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#[cfg(target_pointer_width = "64")]
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const BITS: usize = 64;
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let n = 1_isize << BITS; //~ WARN: arithmetic operation will overflow
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let n = 1_usize << BITS; //~ WARN: arithmetic operation will overflow
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}
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