Adding upstream version 1.65.0+dfsg1.upstream/1.65.0+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 23 insertions, 0 deletions

diff --git a/src/tools/clippy/src/docs/vec_init_then_push.txt b/src/tools/clippy/src/docs/vec_init_then_push.txt
new file mode 100644
index 000000000..445f28747
--- /dev/null
+++ b/src/tools/clippy/src/docs/vec_init_then_push.txt
@@ -0,0 +1,23 @@
+### What it does
+Checks for calls to `push` immediately after creating a new `Vec`.
+
+If the `Vec` is created using `with_capacity` this will only lint if the capacity is a
+constant and the number of pushes is greater than or equal to the initial capacity.
+
+If the `Vec` is extended after the initial sequence of pushes and it was default initialized
+then this will only lint after there were at least four pushes. This number may change in
+the future.
+
+### Why is this bad?
+The `vec![]` macro is both more performant and easier to read than
+multiple `push` calls.
+
+### Example
+```
+let mut v = Vec::new();
+v.push(0);
+```
+Use instead:
+```
+let v = vec![0];
+```
\ No newline at end of file