diff options
Diffstat (limited to 'src/tools/miri/tests/fail/validity')
4 files changed, 48 insertions, 0 deletions
diff --git a/src/tools/miri/tests/fail/validity/wrong-dyn-trait-generic.rs b/src/tools/miri/tests/fail/validity/wrong-dyn-trait-generic.rs new file mode 100644 index 00000000000..9b1cefc4b1d --- /dev/null +++ b/src/tools/miri/tests/fail/validity/wrong-dyn-trait-generic.rs @@ -0,0 +1,12 @@ +use std::mem; + +// Make sure we notice the mismatch also if the difference is "only" in the generic +// parameters of the trait. + +trait Trait<T> {} +impl<T> Trait<T> for T {} + +fn main() { + let x: &dyn Trait<i32> = &0; + let _y: *const dyn Trait<u32> = unsafe { mem::transmute(x) }; //~ERROR: wrong trait +} diff --git a/src/tools/miri/tests/fail/validity/wrong-dyn-trait-generic.stderr b/src/tools/miri/tests/fail/validity/wrong-dyn-trait-generic.stderr new file mode 100644 index 00000000000..1219f9f88cf --- /dev/null +++ b/src/tools/miri/tests/fail/validity/wrong-dyn-trait-generic.stderr @@ -0,0 +1,15 @@ +error: Undefined Behavior: constructing invalid value: wrong trait in wide pointer vtable: expected `Trait<u32>`, but encountered `Trait<i32>` + --> $DIR/wrong-dyn-trait-generic.rs:LL:CC + | +LL | let _y: *const dyn Trait<u32> = unsafe { mem::transmute(x) }; + | ^^^^^^^^^^^^^^^^^ constructing invalid value: wrong trait in wide pointer vtable: expected `Trait<u32>`, but encountered `Trait<i32>` + | + = help: this indicates a bug in the program: it performed an invalid operation, and caused Undefined Behavior + = help: see https://doc.rust-lang.org/nightly/reference/behavior-considered-undefined.html for further information + = note: BACKTRACE: + = note: inside `main` at $DIR/wrong-dyn-trait-generic.rs:LL:CC + +note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace + +error: aborting due to 1 previous error + diff --git a/src/tools/miri/tests/fail/validity/wrong-dyn-trait.rs b/src/tools/miri/tests/fail/validity/wrong-dyn-trait.rs new file mode 100644 index 00000000000..d6049196f26 --- /dev/null +++ b/src/tools/miri/tests/fail/validity/wrong-dyn-trait.rs @@ -0,0 +1,6 @@ +use std::{fmt, mem}; + +fn main() { + let x: &dyn Send = &0; + let _y: *const dyn fmt::Debug = unsafe { mem::transmute(x) }; //~ERROR: wrong trait +} diff --git a/src/tools/miri/tests/fail/validity/wrong-dyn-trait.stderr b/src/tools/miri/tests/fail/validity/wrong-dyn-trait.stderr new file mode 100644 index 00000000000..e3503323b31 --- /dev/null +++ b/src/tools/miri/tests/fail/validity/wrong-dyn-trait.stderr @@ -0,0 +1,15 @@ +error: Undefined Behavior: constructing invalid value: wrong trait in wide pointer vtable: expected `std::fmt::Debug`, but encountered `<trivial>` + --> $DIR/wrong-dyn-trait.rs:LL:CC + | +LL | let _y: *const dyn fmt::Debug = unsafe { mem::transmute(x) }; + | ^^^^^^^^^^^^^^^^^ constructing invalid value: wrong trait in wide pointer vtable: expected `std::fmt::Debug`, but encountered `<trivial>` + | + = help: this indicates a bug in the program: it performed an invalid operation, and caused Undefined Behavior + = help: see https://doc.rust-lang.org/nightly/reference/behavior-considered-undefined.html for further information + = note: BACKTRACE: + = note: inside `main` at $DIR/wrong-dyn-trait.rs:LL:CC + +note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace + +error: aborting due to 1 previous error + |