summaryrefslogtreecommitdiffstats
path: root/src/test/ui/indexing-requires-a-uint.rs
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:02:58 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:02:58 +0000
commit698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch)
tree173a775858bd501c378080a10dca74132f05bc50 /src/test/ui/indexing-requires-a-uint.rs
parentInitial commit. (diff)
downloadrustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz
rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/ui/indexing-requires-a-uint.rs')
-rw-r--r--src/test/ui/indexing-requires-a-uint.rs14
1 files changed, 14 insertions, 0 deletions
diff --git a/src/test/ui/indexing-requires-a-uint.rs b/src/test/ui/indexing-requires-a-uint.rs
new file mode 100644
index 000000000..dbe9b44a1
--- /dev/null
+++ b/src/test/ui/indexing-requires-a-uint.rs
@@ -0,0 +1,14 @@
+// Make sure that indexing an array is only valid with a `usize`, not any other
+// integral type.
+
+fn main() {
+ fn bar<T>(_: T) {}
+ [0][0u8]; //~ ERROR: the type `[{integer}]` cannot be indexed by `u8`
+
+ [0][0]; // should infer to be a usize
+
+ let i = 0; // i is an IntVar
+ [0][i]; // i should be locked to usize
+ bar::<isize>(i); // i should not be re-coerced back to an isize
+ //~^ ERROR: mismatched types
+}