Improve diagnostics for concat_bytes! with C string literals
#142698
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Also ensure the suggestions are checked, since this will be updated.
Use the same error as other invalid types for `concat_bytes!`, rather than using `ConcatCStrLit` from `concat!`. Also add more information with a note about why this doesn't work, and a suggestion to use a null-terminated byte string instead.
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Use the same error as other invalid types for
concat_bytes!, ratherthan using
ConcatCStrLitfromconcat!. Also add more informationwith a note about why this doesn't work, and a suggestion to use a
null-terminated byte string instead.