[libc++] Fix missing encoding in open() call in python script

[siradam7th]

This is a simple fix for the script not being able to run on some platforms due to a missing encoding parameter.

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@llvm/pr-subscribers-libcxx

Author: Adam (siradam7th)

Changes

This is a simple fix for the script not being able to run on some platforms due to a missing encoding parameter.

---

Full diff: https://github.com/llvm/llvm-project/pull/154594.diff

1 Files Affected:

• (modified) libcxx/utils/generate_libcxx_cppm_in.py (+10-2)

diff --git a/libcxx/utils/generate_libcxx_cppm_in.py b/libcxx/utils/generate_libcxx_cppm_in.py
index 39076a61b55b8..26d680a0db31f 100644
--- a/libcxx/utils/generate_libcxx_cppm_in.py
+++ b/libcxx/utils/generate_libcxx_cppm_in.py
@@ -9,11 +9,19 @@
 import os.path
 import sys
 
-from libcxx.header_information import module_c_headers, module_headers, header_restrictions, headers_not_available, libcxx_root
+from libcxx.header_information import (
+    module_c_headers,
+    module_headers,
+    header_restrictions,
+    headers_not_available,
+    libcxx_root,
+)
 
 
 def write_file(module):
-    with open(libcxx_root / "modules" / f"{module}.cppm.in", "w") as module_cpp_in:
+    with open(
+        libcxx_root / "modules" / f"{module}.cppm.in", "w", encoding="utf-8"
+    ) as module_cpp_in:
         module_cpp_in.write(
             """\
 // -*- C++ -*-

[siradam7th]

@frederick-vs-ja @ldionne

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[frederick-vs-ja]

LGTM. CI failures were unrelated. This seems following #148874 up.

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[ldionne]

@siradam7th Thanks for the contribution. In the future, please disable private Github email addresses when making contributions to LLVM -- we need a real email address for commit attribution. Cheers!