-
Notifications
You must be signed in to change notification settings - Fork 332
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Auto merge of #126679 - fmease:rollup-njrv2py, r=fmease
Rollup of 6 pull requests Successful merges: - #125447 (Allow constraining opaque types during subtyping in the trait system) - #125766 (MCDC Coverage: instrument last boolean RHS operands from condition coverage) - #125880 (Remove `src/tools/rust-demangler`) - #126154 (StorageLive: refresh storage (instead of UB) when local is already live) - #126572 (override user defined channel when using precompiled rustc) - #126662 (Unconditionally warn on usage of `wasm32-wasi`) r? `@ghost` `@rustbot` modify labels: rollup
- Loading branch information
Showing
4 changed files
with
61 additions
and
0 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,14 @@ | ||
#![feature(core_intrinsics, custom_mir)] | ||
use std::intrinsics::mir::*; | ||
|
||
#[custom_mir(dialect = "runtime")] | ||
fn main() { | ||
mir! { | ||
let val: i32; | ||
{ | ||
val = 42; //~ERROR: accessing a dead local variable | ||
StorageLive(val); // too late... (but needs to be here to make `val` not implicitly live) | ||
Return() | ||
} | ||
} | ||
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,15 @@ | ||
error: Undefined Behavior: accessing a dead local variable | ||
--> $DIR/storage-live-dead-var.rs:LL:CC | ||
| | ||
LL | val = 42; | ||
| ^^^^^^^^ accessing a dead local variable | ||
| | ||
= 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/storage-live-dead-var.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 | ||
|
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,17 @@ | ||
#![feature(core_intrinsics, custom_mir)] | ||
use std::intrinsics::mir::*; | ||
|
||
#[custom_mir(dialect = "runtime")] | ||
fn main() { | ||
mir! { | ||
let val: i32; | ||
let _val2: i32; | ||
{ | ||
StorageLive(val); | ||
val = 42; | ||
StorageLive(val); // reset val to `uninit` | ||
_val2 = val; //~ERROR: uninitialized | ||
Return() | ||
} | ||
} | ||
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,15 @@ | ||
error: Undefined Behavior: constructing invalid value: encountered uninitialized memory, but expected an integer | ||
--> $DIR/storage-live-resets-var.rs:LL:CC | ||
| | ||
LL | _val2 = val; | ||
| ^^^^^^^^^^^ constructing invalid value: encountered uninitialized memory, but expected an integer | ||
| | ||
= 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/storage-live-resets-var.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 | ||
|