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Diffstat (limited to '')
-rw-r--r-- | src/test/ui/issues/issue-30530.rs | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/src/test/ui/issues/issue-30530.rs b/src/test/ui/issues/issue-30530.rs new file mode 100644 index 000000000..111fb8aa5 --- /dev/null +++ b/src/test/ui/issues/issue-30530.rs @@ -0,0 +1,28 @@ +// run-pass +// Regression test for Issue #30530: alloca's created for storing +// intermediate scratch values during brace-less match arms need to be +// initialized with their drop-flag set to "dropped" (or else we end +// up running the destructors on garbage data at the end of the +// function). + +pub enum Handler { + Default, + #[allow(dead_code)] + Custom(*mut Box<dyn Fn()>), +} + +fn main() { + #[allow(unused_must_use)] { + take(Handler::Default, Box::new(main)); + } +} + +#[inline(never)] +pub fn take(h: Handler, f: Box<dyn Fn()>) -> Box<dyn Fn()> { + unsafe { + match h { + Handler::Custom(ptr) => *Box::from_raw(ptr), + Handler::Default => f, + } + } +} |