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rustc: print filename if file cannot be written

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File cannot be written, for example, if directory does not exist.

Before this commit:

```
% rustc -o nonexistent/program program.rs
error: could not write output: No such file or directory
```

With this commit:

```
% rustc -o nonexistent/program program.rs
error: could not write output to nonexistent/program.0.o: No such file or directory
```

This is useful when full rust command is not displayed, or when last
error is preceded by thousands of warnings.
This commit is contained in:
Stepan Koltsov 2015-01-18 03:32:11 +03:00
parent 89c4e3792d
commit fa01251a8c
1 changed files with 3 additions and 3 deletions
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6
src/librustc_trans/back/write.rs
View File

@ -67,11 +67,11 @@ pub fn write_output_file(
output: &Path,
file_type: llvm::FileType) {
unsafe {
let output = CString::from_slice(output.as_vec());
let output_c = CString::from_slice(output.as_vec());
let result = llvm::LLVMRustWriteOutputFile(
target, pm, m, output.as_ptr(), file_type);
target, pm, m, output_c.as_ptr(), file_type);
if !result {
llvm_err(handler, "could not write output".to_string());
llvm_err(handler, format!("could not write output to {}", output.display()));
}
}
}