Merge pull request swiftlang#30911 from compnerd/long-paths

test: support long paths in `rewrite-module-triples`

Author: compnerd

test/CrossImport/Inputs/rewrite-module-triples.py

@@ -7,6 +7,7 @@
 from __future__ import print_function
 
 import os
+import platform
 import shutil
 import sys
 
@@ -36,7 +37,11 @@ def rewrite(parent, names, copy_fn, rm_fn):
 
         for new_name in new_names:
             new_path = os.path.join(parent, new_name)
-            copy_fn(path, new_path)
+            if platform.system() == 'Windows':
+                copy_fn(u'\\'.join([u'\\\\?', os.path.normpath(path)]),
+                        u'\\'.join([u'\\\\?', os.path.normpath(new_path)]))
+            else:
+                copy_fn(path, new_path)
 
         rm_fn(path)