change system file

hc

2024-10-09 244b2c5ca8b14627e4a17755e5922221e121c771

 kernel/tools/build/feature/test-sched_getcpu.c
..
..
@@ -8,3 +8,5 @@
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 {
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 	return sched_getcpu();
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 }
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+
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+#undef _GNU_SOURCE