diff options
Diffstat (limited to '')
-rw-r--r-- | src/test/ui/issues/issue-4734.rs | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/src/test/ui/issues/issue-4734.rs b/src/test/ui/issues/issue-4734.rs new file mode 100644 index 000000000..29c965d7f --- /dev/null +++ b/src/test/ui/issues/issue-4734.rs @@ -0,0 +1,37 @@ +// run-pass +#![allow(dead_code)] +// Ensures that destructors are run for expressions of the form "e;" where +// `e` is a type which requires a destructor. + + +#![allow(path_statements)] + +struct A { n: isize } +struct B; + +static mut NUM_DROPS: usize = 0; + +impl Drop for A { + fn drop(&mut self) { + unsafe { NUM_DROPS += 1; } + } +} + +impl Drop for B { + fn drop(&mut self) { + unsafe { NUM_DROPS += 1; } + } +} + +fn main() { + assert_eq!(unsafe { NUM_DROPS }, 0); + { let _a = A { n: 1 }; } + assert_eq!(unsafe { NUM_DROPS }, 1); + { A { n: 3 }; } + assert_eq!(unsafe { NUM_DROPS }, 2); + + { let _b = B; } + assert_eq!(unsafe { NUM_DROPS }, 3); + { B; } + assert_eq!(unsafe { NUM_DROPS }, 4); +} |