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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/must-use-in-macro-55516.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/must-use-in-macro-55516.rs')
-rw-r--r-- | src/test/ui/macros/must-use-in-macro-55516.rs | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/test/ui/macros/must-use-in-macro-55516.rs b/src/test/ui/macros/must-use-in-macro-55516.rs new file mode 100644 index 000000000..e7c346286 --- /dev/null +++ b/src/test/ui/macros/must-use-in-macro-55516.rs @@ -0,0 +1,10 @@ +// check-pass +// compile-flags: -Wunused + +// make sure write!() can't hide its unused Result + +fn main() { + use std::fmt::Write; + let mut example = String::new(); + write!(&mut example, "{}", 42); //~WARN must be used +} |