* [COMMITTED] gccrs: testsuite: add loop condition execution test
@ 2023-01-31 13:26 Arthur Cohen
0 siblings, 0 replies; only message in thread
From: Arthur Cohen @ 2023-01-31 13:26 UTC (permalink / raw)
To: gcc-patches; +Cc: gcc-rust, liushuyu
From: liushuyu <liushuyu011@gmail.com>
gcc/testsuite/ChangeLog:
* rust/execute/torture/loop-condition-eval.rs: New test.
Signed-off-by: Zixing Liu <liushuyu011@gmail.com>
Tested on x86_64-pc-linux-gnu, committed on master.
---
.../execute/torture/loop-condition-eval.rs | 21 +++++++++++++++++++
1 file changed, 21 insertions(+)
create mode 100644 gcc/testsuite/rust/execute/torture/loop-condition-eval.rs
diff --git a/gcc/testsuite/rust/execute/torture/loop-condition-eval.rs b/gcc/testsuite/rust/execute/torture/loop-condition-eval.rs
new file mode 100644
index 00000000000..008965917ab
--- /dev/null
+++ b/gcc/testsuite/rust/execute/torture/loop-condition-eval.rs
@@ -0,0 +1,21 @@
+// { dg-output "1\n" }
+pub fn test() -> u64 {
+ let mut n = 113383; // #20 in https://oeis.org/A006884
+ while n != 1 {
+ n = if n % 2 == 0 { n / 2 } else { 3 * n + 1 };
+ }
+ n
+}
+
+pub fn test_1() -> u64 {
+ test()
+}
+
+extern "C" {
+ fn printf(fmt: *const i8, ...);
+}
+
+fn main() -> i32 {
+ unsafe { printf("%lu\n" as *const str as *const i8, test_1()) }
+ 0
+}
--
2.39.1
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