[llvm] [lit] Implement builtin umask (PR #94621)

[Jay Foad via llvm-commits]

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@@ -87,10 +87,11 @@ class ShellEnvironment(object):
     we maintain a dir stack for pushd/popd.
     """
 
-    def __init__(self, cwd, env):
+    def __init__(self, cwd, env, umask=-1):
         self.cwd = cwd
         self.env = dict(env)
         self.dirStack = []
+        self.umask = umask
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jayfoad wrote:

Done, thanks.

https://github.com/llvm/llvm-project/pull/94621