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Diffstat (limited to 'src/tools/clippy/src/docs/transmuting_null.txt')
| -rw-r--r-- | src/tools/clippy/src/docs/transmuting_null.txt | 15 |
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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