Issue #7317 has been reported by nobu (Nobuyoshi Nakada).

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Backport #7317: non-writable srcdir fix
https://bugs.ruby-lang.org/issues/7317

Author: nobu (Nobuyoshi Nakada)
Status: Assigned
Priority: Normal
Assignee: usa (Usaku NAKAMURA)
Category: 
Target version: 


r35591???????????????????????????????????


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