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Diffstat (limited to '')
-rw-r--r-- | src/test/ui/issues/issue-27592.rs | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/test/ui/issues/issue-27592.rs b/src/test/ui/issues/issue-27592.rs new file mode 100644 index 000000000..88f70f584 --- /dev/null +++ b/src/test/ui/issues/issue-27592.rs @@ -0,0 +1,19 @@ +// Regression test for issue #27592. + +fn write<'a, F: ::std::ops::FnOnce()->::std::fmt::Arguments<'a> + 'a>(fcn: F) { + use std::fmt::Write; + let _ = match fcn() { a => write!(&mut Stream, "{}", a), }; +} + +struct Stream; +impl ::std::fmt::Write for Stream { + fn write_str(&mut self, _s: &str) -> ::std::fmt::Result { + Ok( () ) + } +} + +fn main() { + write(|| format_args!("{}", String::from("Hello world"))); + //~^ ERROR cannot return value referencing temporary value + //~| ERROR cannot return reference to temporary value +} |