Eagerly close tempfile to fix #1082 #1087
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src/tool.rs
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| @@ -134,6 +134,9 @@ impl Tool { | |||
| })?; | |||
| tmp.file() | |||
| .write_all(include_bytes!("detect_compiler_family.c"))?; | |||
| // Close the file handle *now*, otherwise the compiler may fail to open it on Windows | |||
| // (#1082). The file stays on disk and its path remains valid until `tmp` is dropped. | |||
| tmp.close(); | |||
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Let's also do a tmp.file().flush()?;
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That would call the Write::flush method, which for File is a no-op on all mainstream platforms including all that cc supports right now: Windows, Unix, and wasi. If you intend the call as precaution against adding a BufWriter or something in the future, sure, I can add it. However, if you want to surface I/O errors that would otherwise be detected while closing the file and ignored by dropping, we'll need File::sync_all as discussed in File's documentation. Which option do you prefer?
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Thanks for investigating this, I'd like file.flush()?; and file.sync_data()?; to be called.
I don't think we need file.sync_metadata()?;, since it's a tempfile.
src/tempfile.rs
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| @@ -72,13 +72,17 @@ impl NamedTempfile { | |||
| pub(super) fn file(&self) -> &File { | |||
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Let's change this method, to fn take_file() -> Option<File>, so we don't need the close() method
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Thank you! Just two suggestions I'd want you to change |
Fixed #1082