From 0d5adf09356641070079eadef09717ece164b6b9 Mon Sep 17 00:00:00 2001 From: liushuyu Date: Tue, 6 Sep 2022 22:41:17 -0600 Subject: [PATCH] gccrs: testsuite: add loop condition execution test gcc/testsuite/ChangeLog: * rust/execute/torture/loop-condition-eval.rs: New test. Signed-off-by: Zixing Liu --- .../rust/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 0000000..0089659 --- /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 +} -- 2.7.4