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-rw-r--r--tests/run-make/coverage/if_else.rs40
1 files changed, 40 insertions, 0 deletions
diff --git a/tests/run-make/coverage/if_else.rs b/tests/run-make/coverage/if_else.rs
new file mode 100644
index 000000000..3244e1e3a
--- /dev/null
+++ b/tests/run-make/coverage/if_else.rs
@@ -0,0 +1,40 @@
+#![allow(unused_assignments, unused_variables)]
+
+fn main() {
+ // Initialize test constants in a way that cannot be determined at compile time, to ensure
+ // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
+ // dependent conditions.
+ let is_true = std::env::args().len() == 1;
+
+ let mut countdown = 0;
+ if
+ is_true
+ {
+ countdown
+ =
+ 10
+ ;
+ }
+ else // Note coverage region difference without semicolon
+ {
+ countdown
+ =
+ 100
+ }
+
+ if
+ is_true
+ {
+ countdown
+ =
+ 10
+ ;
+ }
+ else
+ {
+ countdown
+ =
+ 100
+ ;
+ }
+}