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| author | Mazdak Farrokhzad <twingoow@gmail.com> | 2019-10-02 18:24:43 +0200 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2019-10-02 18:24:43 +0200 |
| commit | 34ea55908e36e2b83d5ccdf34fa81aed95ecc44b (patch) | |
| tree | 2880583b0b61c437614fd545370b762cabbe90bd /src/test | |
| parent | 028ffd136659eabdc1fd4c1d2e2d5f8043440cff (diff) | |
| parent | 3a8932d9b0d12a67c9b92e0370de708a089d50b4 (diff) | |
| download | rust-34ea55908e36e2b83d5ccdf34fa81aed95ecc44b.tar.gz rust-34ea55908e36e2b83d5ccdf34fa81aed95ecc44b.zip | |
Rollup merge of #64991 - wesleywiser:fix_too_eager_const_prop, r=oli-obk
[const-prop] Correctly handle locals that can't be propagated `const_prop()` now handles writing the Rvalue into the Place in the stack frame for us. So if we're not supposed to propagate that value, we need to clear it. r? @oli-obk Fixes #64970
Diffstat (limited to 'src/test')
| -rw-r--r-- | src/test/ui/consts/const-eval/issue-64970.rs | 15 | ||||
| -rw-r--r-- | src/test/ui/consts/const-eval/issue-64970.stderr | 8 |
2 files changed, 23 insertions, 0 deletions
diff --git a/src/test/ui/consts/const-eval/issue-64970.rs b/src/test/ui/consts/const-eval/issue-64970.rs new file mode 100644 index 00000000000..ede5081c8a5 --- /dev/null +++ b/src/test/ui/consts/const-eval/issue-64970.rs @@ -0,0 +1,15 @@ +// run-pass + +fn main() { + foo(10); +} + +fn foo(mut n: i32) { + if false { + n = 0i32; + } + + if n > 0i32 { + 1i32 / n; + } +} diff --git a/src/test/ui/consts/const-eval/issue-64970.stderr b/src/test/ui/consts/const-eval/issue-64970.stderr new file mode 100644 index 00000000000..2c44b68cbd1 --- /dev/null +++ b/src/test/ui/consts/const-eval/issue-64970.stderr @@ -0,0 +1,8 @@ +warning: unused arithmetic operation that must be used + --> $DIR/issue-64970.rs:13:9 + | +LL | 1i32 / n; + | ^^^^^^^^ + | + = note: `#[warn(unused_must_use)]` on by default + |