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Fix execute permissions for flatc binary extracted from PAR files (#18738) #18738

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Merged
meta-codesync merged 1 commit into from
Apr 8, 2026
Merged

Fix execute permissions for flatc binary extracted from PAR files (#18738) #18738

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10 changes: 10 additions & 0 deletions exir/_serialize/_flatbuffer.py
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Original file line number Diff line number Diff line change
Expand Up @@ -11,6 +11,7 @@
import os
import re
import shutil
import stat
import subprocess

import tempfile
Expand Down Expand Up @@ -252,6 +253,15 @@ def _run_flatc(args: Sequence[str]) -> None:
if flatc_resource.is_file():
# Use the provided flatc binary.
with importlib.resources.as_file(flatc_resource) as flatc_path:
# Ensure the binary has execute permissions (needed for PAR files)
try:
current_mode = flatc_path.stat().st_mode
if not (current_mode & stat.S_IXUSR):
flatc_path.chmod(
current_mode | stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH
)
except OSError:
pass
subprocess.run([flatc_path] + list(args), check=True)
else:
# Expect the `flatc` tool to be on the system path or set as an env var.
Expand Down
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