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Diffstat (limited to '')
-rw-r--r-- | src/test/ui/borrowck/reassignment_immutable_fields_overlapping.rs | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/test/ui/borrowck/reassignment_immutable_fields_overlapping.rs b/src/test/ui/borrowck/reassignment_immutable_fields_overlapping.rs new file mode 100644 index 000000000..d7aad6c01 --- /dev/null +++ b/src/test/ui/borrowck/reassignment_immutable_fields_overlapping.rs @@ -0,0 +1,16 @@ +// This should never be allowed -- `foo.a` and `foo.b` are +// overlapping, so since `x` is not `mut` we should not permit +// reassignment. + +union Foo { + a: u32, + b: u32, +} + +unsafe fn overlapping_fields() { + let x: Foo; + x.a = 1; //~ ERROR + x.b = 22; //~ ERROR +} + +fn main() { } |