rust/tests/ui/numbers-arithmetic/overflowing-mul.rs

//@ run-fail
//@ regex-error-pattern: thread 'main'.*panicked
//@ error-pattern: attempt to multiply with overflow
//@ needs-subprocess
//@ compile-flags: -C debug-assertions

#![allow(arithmetic_overflow)]

fn main() {
    let x = 200u8 * 4;
}
[AUTO-GENERATED] Migrate ui tests from `//` to `//@` directives 2024-02-16 20:02:50 +00:00			`//@ run-fail`
Print thread ID in panic message if thread name is unknown `panic!` does not print any identifying information for threads that are unnamed. However, in many cases, the thread ID can be determined. This changes the panic message from something like this: thread '<unnamed>' panicked at src/main.rs:3:5: explicit panic To something like this: thread '<unnamed>' (0xff9bf) panicked at src/main.rs:3:5: explicit panic Stack overflow messages are updated as well. This change applies to both named and unnamed threads. The ID printed is the OS integer thread ID rather than the Rust thread ID, which should also be what debuggers print. 2023-09-11 00:59:31 -04:00			`//@ regex-error-pattern: thread 'main'.*panicked`
			`//@ error-pattern: attempt to multiply with overflow`
tests: use `needs-subprocess` instead of `ignore-{wasm32,emscripten,sgx}` 2025-01-23 16:36:54 +08:00			`//@ needs-subprocess`
[AUTO-GENERATED] Migrate ui tests from `//` to `//@` directives 2024-02-16 20:02:50 +00:00			`//@ compile-flags: -C debug-assertions`
Fix the overflowing tests in run-fail. * The error patterns had a typo. * Our current constant evaluation would silently allow the overflow (filed as Issue 22531). * The overflowing-mul test was accidentally doing addition instead of multiplication. 2015-02-19 12:37:27 +01:00
better lint names 2020-02-18 22:49:47 +01:00			`#![allow(arithmetic_overflow)]`
Make the `const_err` lint `deny`-by-default 2018-05-11 14:33:37 +02:00
rustc: implement arithmetic overflow checking Adds overflow checking to integer addition, multiplication, and subtraction when `-Z force-overflow-checks` is true, or if `--cfg ndebug` is not passed to the compiler. On overflow, it panics with `arithmetic operation overflowed`. Also adds `overflowing_add`, `overflowing_sub`, and `overflowing_mul` intrinsics for doing unchecked arithmetic. [breaking-change] 2015-01-06 00:56:30 -05:00			`fn main() {`
implement RFC 1229 const eval errors outside of true constant enviroments are not reported anymore, but instead forwarded to a lint. 2015-10-02 10:36:45 +02:00			`let x = 200u8 * 4;`
rustc: implement arithmetic overflow checking Adds overflow checking to integer addition, multiplication, and subtraction when `-Z force-overflow-checks` is true, or if `--cfg ndebug` is not passed to the compiler. On overflow, it panics with `arithmetic operation overflowed`. Also adds `overflowing_add`, `overflowing_sub`, and `overflowing_mul` intrinsics for doing unchecked arithmetic. [breaking-change] 2015-01-06 00:56:30 -05:00			`}`