From 64d98f8ee037282c35007b64c2649055c56af1db Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:19:03 +0200 Subject: Merging upstream version 1.68.2+dfsg1. Signed-off-by: Daniel Baumann --- tests/ui/macros/macro-backtrace-println.rs | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 tests/ui/macros/macro-backtrace-println.rs (limited to 'tests/ui/macros/macro-backtrace-println.rs') diff --git a/tests/ui/macros/macro-backtrace-println.rs b/tests/ui/macros/macro-backtrace-println.rs new file mode 100644 index 000000000..859dd019d --- /dev/null +++ b/tests/ui/macros/macro-backtrace-println.rs @@ -0,0 +1,19 @@ +// The `format_args!` syntax extension issues errors before code expansion +// has completed, but we still need a backtrace. + +// This test includes stripped-down versions of `print!` and `println!`, +// because we can't otherwise verify the lines of the backtrace. + +fn print(_args: std::fmt::Arguments) {} + +macro_rules! myprint { + ($($arg:tt)*) => (print(format_args!($($arg)*))); +} + +macro_rules! myprintln { + ($fmt:expr) => (myprint!(concat!($fmt, "\n"))); //~ ERROR no arguments were given +} + +fn main() { + myprintln!("{}"); +} -- cgit v1.2.3