From 0cf43291d7007fa8edc31e0d7dda84acc453d86d Mon Sep 17 00:00:00 2001 From: Ralf Jung Date: Mon, 29 Jul 2019 15:34:40 +0200 Subject: [PATCH] also test error messages --- src/test/ui/consts/const-eval/ub-ref.rs | 2 ++ src/test/ui/consts/const-eval/ub-ref.stderr | 10 +++++----- 2 files changed, 7 insertions(+), 5 deletions(-) diff --git a/src/test/ui/consts/const-eval/ub-ref.rs b/src/test/ui/consts/const-eval/ub-ref.rs index 3b19f3b07753..0d8f30159b31 100644 --- a/src/test/ui/consts/const-eval/ub-ref.rs +++ b/src/test/ui/consts/const-eval/ub-ref.rs @@ -1,3 +1,4 @@ +// ignore-tidy-linelength #![feature(const_transmute)] #![allow(const_err)] // make sure we cannot allow away the errors tested here @@ -5,6 +6,7 @@ use std::mem; const UNALIGNED: &u16 = unsafe { mem::transmute(&[0u8; 4]) }; //~^ ERROR it is undefined behavior to use this value +//~^^ type validation failed: encountered unaligned reference (required 2 byte alignment but found 1) const NULL: &u16 = unsafe { mem::transmute(0usize) }; //~^ ERROR it is undefined behavior to use this value diff --git a/src/test/ui/consts/const-eval/ub-ref.stderr b/src/test/ui/consts/const-eval/ub-ref.stderr index 153c5381950f..f1702955ed7b 100644 --- a/src/test/ui/consts/const-eval/ub-ref.stderr +++ b/src/test/ui/consts/const-eval/ub-ref.stderr @@ -1,5 +1,5 @@ error[E0080]: it is undefined behavior to use this value - --> $DIR/ub-ref.rs:6:1 + --> $DIR/ub-ref.rs:7:1 | LL | const UNALIGNED: &u16 = unsafe { mem::transmute(&[0u8; 4]) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ type validation failed: encountered unaligned reference (required 2 byte alignment but found 1) @@ -7,7 +7,7 @@ LL | const UNALIGNED: &u16 = unsafe { mem::transmute(&[0u8; 4]) }; = note: The rules on what exactly is undefined behavior aren't clear, so this check might be overzealous. Please open an issue on the rust compiler repository if you believe it should not be considered undefined behavior error[E0080]: it is undefined behavior to use this value - --> $DIR/ub-ref.rs:9:1 + --> $DIR/ub-ref.rs:11:1 | LL | const NULL: &u16 = unsafe { mem::transmute(0usize) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ type validation failed: encountered 0, but expected something greater or equal to 1 @@ -15,7 +15,7 @@ LL | const NULL: &u16 = unsafe { mem::transmute(0usize) }; = note: The rules on what exactly is undefined behavior aren't clear, so this check might be overzealous. Please open an issue on the rust compiler repository if you believe it should not be considered undefined behavior error[E0080]: it is undefined behavior to use this value - --> $DIR/ub-ref.rs:12:1 + --> $DIR/ub-ref.rs:14:1 | LL | const REF_AS_USIZE: usize = unsafe { mem::transmute(&0) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ type validation failed: encountered a pointer, but expected initialized plain (non-pointer) bytes @@ -23,7 +23,7 @@ LL | const REF_AS_USIZE: usize = unsafe { mem::transmute(&0) }; = note: The rules on what exactly is undefined behavior aren't clear, so this check might be overzealous. Please open an issue on the rust compiler repository if you believe it should not be considered undefined behavior error[E0080]: it is undefined behavior to use this value - --> $DIR/ub-ref.rs:15:1 + --> $DIR/ub-ref.rs:17:1 | LL | const REF_AS_USIZE_SLICE: &[usize] = &[unsafe { mem::transmute(&0) }]; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ type validation failed: encountered a pointer at ., but expected plain (non-pointer) bytes @@ -31,7 +31,7 @@ LL | const REF_AS_USIZE_SLICE: &[usize] = &[unsafe { mem::transmute(&0) }]; = note: The rules on what exactly is undefined behavior aren't clear, so this check might be overzealous. Please open an issue on the rust compiler repository if you believe it should not be considered undefined behavior error[E0080]: it is undefined behavior to use this value - --> $DIR/ub-ref.rs:18:1 + --> $DIR/ub-ref.rs:20:1 | LL | const USIZE_AS_REF: &'static u8 = unsafe { mem::transmute(1337usize) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ type validation failed: encountered dangling reference (created from integer)