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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /src/test/ui/macros/macro-backtrace-println.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/ui/macros/macro-backtrace-println.rs')
-rw-r--r-- | src/test/ui/macros/macro-backtrace-println.rs | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/test/ui/macros/macro-backtrace-println.rs b/src/test/ui/macros/macro-backtrace-println.rs new file mode 100644 index 000000000..859dd019d --- /dev/null +++ b/src/test/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!("{}"); +} |