Unimplemented macro println
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bug
- Dominant language
- C++
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Description
I tried this code (error encountered in the wild here), but I have reduced it to a testcase.:
fn main()
{
println!("salutate");
}
I expected to see this happen: The code to compile and run, printing salutate. This code works successfully with rustc greetings.rs
Instead, this happened:
greetings.rs:3:3: error: unknown macro 2: [println]
3 | println!("salutate");
| ^
Meta
I was using version d155a54785cb7b40ada7ae748997d717a4b27ab9.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the reduced greetings.rs testcase and compare its behavior with rustc; the original affected path is compiler/rustc/build.rs. Done means gccrs accepts println!("salutate") and the program compiles, runs, and prints salutate.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp, rust
- Domain
- compilers
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100