diff --git a/compiler/rustc_typeck/src/expr_use_visitor.rs b/compiler/rustc_typeck/src/expr_use_visitor.rs index 1d7852d964c1d..1bdad508daa2d 100644 --- a/compiler/rustc_typeck/src/expr_use_visitor.rs +++ b/compiler/rustc_typeck/src/expr_use_visitor.rs @@ -265,6 +265,9 @@ impl<'a, 'tcx> ExprUseVisitor<'a, 'tcx> { if def.variants.len() > 1 { needs_to_be_read = true; } + } else { + // If it is not ty::Adt, then it should be read + needs_to_be_read = true; } } PatKind::Lit(_) | PatKind::Range(..) => { diff --git a/src/test/ui/closures/2229_closure_analysis/issue-87988.rs b/src/test/ui/closures/2229_closure_analysis/issue-87988.rs new file mode 100644 index 0000000000000..27e7fabf11ab6 --- /dev/null +++ b/src/test/ui/closures/2229_closure_analysis/issue-87988.rs @@ -0,0 +1,19 @@ +// run-pass +// edition:2021 + +const LIBUSB_HOTPLUG_EVENT_DEVICE_ARRIVED: i32 = 0x01; +const LIBUSB_HOTPLUG_EVENT_DEVICE_LEFT: i32 = 0x02; + +pub fn hotplug_callback(event: i32) { + let _ = || { + match event { + LIBUSB_HOTPLUG_EVENT_DEVICE_ARRIVED => (), + LIBUSB_HOTPLUG_EVENT_DEVICE_LEFT => (), + _ => (), + }; + }; +} + +fn main() { + hotplug_callback(1); +} diff --git a/src/test/ui/closures/2229_closure_analysis/match-edge-cases.rs b/src/test/ui/closures/2229_closure_analysis/match-edge-cases.rs new file mode 100644 index 0000000000000..914ebbe26a57d --- /dev/null +++ b/src/test/ui/closures/2229_closure_analysis/match-edge-cases.rs @@ -0,0 +1,44 @@ +// run-pass +// edition:2021 + +const PATTERN_REF: &str = "Hello World"; +const NUMBER: i32 = 30; +const NUMBER_POINTER: *const i32 = &NUMBER; + +pub fn edge_case_ref(event: &str) { + let _ = || { + match event { + PATTERN_REF => (), + _ => (), + }; + }; +} + +pub fn edge_case_str(event: String) { + let _ = || { + match event.as_str() { + "hello" => (), + _ => (), + }; + }; +} + +pub fn edge_case_raw_ptr(event: *const i32) { + let _ = || { + match event { + NUMBER_POINTER => (), + _ => (), + }; + }; +} + +pub fn edge_case_char(event: char) { + let _ = || { + match event { + 'a' => (), + _ => (), + }; + }; +} + +fn main() {}