diff options
Diffstat (limited to 'src/test/ui/recursion/issue-95134.rs')
-rw-r--r-- | src/test/ui/recursion/issue-95134.rs | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/src/test/ui/recursion/issue-95134.rs b/src/test/ui/recursion/issue-95134.rs new file mode 100644 index 000000000..adc9c6ee2 --- /dev/null +++ b/src/test/ui/recursion/issue-95134.rs @@ -0,0 +1,28 @@ +// build-fail +// compile-flags: -Copt-level=0 +//~^^ ERROR overflow evaluating the requirement + +pub fn encode_num<Writer: ExampleWriter>(n: u32, mut writer: Writer) -> Result<(), Writer::Error> { + if n > 15 { + encode_num(n / 16, &mut writer)?; + } + Ok(()) +} + +pub trait ExampleWriter { + type Error; +} + +impl<'a, T: ExampleWriter> ExampleWriter for &'a mut T { + type Error = T::Error; +} + +struct EmptyWriter; + +impl ExampleWriter for EmptyWriter { + type Error = (); +} + +fn main() { + encode_num(69, &mut EmptyWriter).unwrap(); +} |