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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /src/test/ui/lint/lint-deref-nullptr.rs | |
parent | Initial commit. (diff) | |
download | rustc-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 '')
-rw-r--r-- | src/test/ui/lint/lint-deref-nullptr.rs | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/src/test/ui/lint/lint-deref-nullptr.rs b/src/test/ui/lint/lint-deref-nullptr.rs new file mode 100644 index 000000000..d052dbd9b --- /dev/null +++ b/src/test/ui/lint/lint-deref-nullptr.rs @@ -0,0 +1,38 @@ +// test the deref_nullptr lint + +#![deny(deref_nullptr)] + +use std::ptr; + +struct Struct { + field: u8, +} + +fn f() { + unsafe { + let a = 1; + let ub = *(a as *const i32); + let ub = *(0 as *const i32); + //~^ ERROR dereferencing a null pointer + let ub = *ptr::null::<i32>(); + //~^ ERROR dereferencing a null pointer + let ub = *ptr::null_mut::<i32>(); + //~^ ERROR dereferencing a null pointer + let ub = *(ptr::null::<i16>() as *const i32); + //~^ ERROR dereferencing a null pointer + let ub = *(ptr::null::<i16>() as *mut i32 as *mut usize as *const u8); + //~^ ERROR dereferencing a null pointer + let ub = &*ptr::null::<i32>(); + //~^ ERROR dereferencing a null pointer + let ub = &*ptr::null_mut::<i32>(); + //~^ ERROR dereferencing a null pointer + ptr::addr_of!(*ptr::null::<i32>()); + //~^ ERROR dereferencing a null pointer + ptr::addr_of_mut!(*ptr::null_mut::<i32>()); + //~^ ERROR dereferencing a null pointer + let offset = ptr::addr_of!((*ptr::null::<Struct>()).field); + //~^ ERROR dereferencing a null pointer + } +} + +fn main() {} |