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-rw-r--r--Modules/posixmodule.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
index 9c174ee..667a333 100644
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -46,7 +46,8 @@
# undef HAVE_FACCESSAT
#endif
-#include <stdio.h> /* needed for ctermid() */
+#include <stdio.h> // ctermid()
+#include <stdlib.h> // system()
/*
* A number of APIs are available on macOS from a certain macOS version.