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* [gcc/devel/rust/master] testsuite: add loop condition execution test
@ 2022-09-12 7:20 Thomas Schwinge
0 siblings, 0 replies; only message in thread
From: Thomas Schwinge @ 2022-09-12 7:20 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:6839ad40eebf982f149452cc294ab387350abcef
commit 6839ad40eebf982f149452cc294ab387350abcef
Author: liushuyu <liushuyu011@gmail.com>
Date: Tue Sep 6 22:41:17 2022 -0600
testsuite: add loop condition execution test
Diff:
---
.../rust/execute/torture/loop-condition-eval.rs | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
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
+}
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