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Chayim Refael Friedman
b5ad702c62
This is not documented (and I discovered that from experimenting and looking at the compiler's source code), but cfg_attrs *on the same level* as the attribute macro should be processed before it is expanded. cfg_attrs *below* should not (and this is contrary to what happens with derive macros, where both should be processed).
This directory contains some source code for the Rust project, including:
- The bootstrapping build system
- Various submodules for tools, like cargo, tidy, etc.
For more information on how various parts of the compiler work, see the rustc dev guide.