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, 15 insertions, 0 deletions

diff --git a/src/tools/clippy/src/docs/transmuting_null.txt b/src/tools/clippy/src/docs/transmuting_null.txt
new file mode 100644
index 000000000..f8bacfc0b
--- /dev/null
+++ b/src/tools/clippy/src/docs/transmuting_null.txt
@@ -0,0 +1,15 @@
+### What it does
+Checks for transmute calls which would receive a null pointer.
+
+### Why is this bad?
+Transmuting a null pointer is undefined behavior.
+
+### Known problems
+Not all cases can be detected at the moment of this writing.
+For example, variables which hold a null pointer and are then fed to a `transmute`
+call, aren't detectable yet.
+
+### Example
+```
+let null_ref: &u64 = unsafe { std::mem::transmute(0 as *const u64) };
+```
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