Update upstream source from tag 'upstream/1.52.1+dfsg1'

[rustc.git] / src / tools / clippy / tests / ui / dbg_macro.rs

diff --git a/src/tools/clippy/tests/ui/dbg_macro.rs b/src/tools/clippy/tests/ui/dbg_macro.rs
new file mode 100644 (file)
index 0000000..d74e261
--- /dev/null
+++ b/src/tools/clippy/tests/ui/dbg_macro.rs
@@ -0,0 +1,19 @@
+#![warn(clippy::dbg_macro)]
+
+fn foo(n: u32) -> u32 {
+    if let Some(n) = dbg!(n.checked_sub(4)) { n } else { n }
+}
+
+fn factorial(n: u32) -> u32 {
+    if dbg!(n <= 1) {
+        dbg!(1)
+    } else {
+        dbg!(n * factorial(n - 1))
+    }
+}
+
+fn main() {
+    dbg!(42);
+    dbg!(dbg!(dbg!(42)));
+    foo(3) + dbg!(factorial(4));
+}