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-rw-r--r--Objects/fileobject.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/Objects/fileobject.c b/Objects/fileobject.c
index d008ff7..43b81ed 100644
--- a/Objects/fileobject.c
+++ b/Objects/fileobject.c
@@ -651,7 +651,7 @@ get_line(PyFileObject *f, int n)
size_t n1, n2;
PyObject *v;
-#ifdef HAVE_GETLINE
+#if defined(HAVE_GETLINE) && defined(_GNU_SOURCE)
/* Use GNU libc extension getline() for arbitrary-sized lines */
if (n == 0) {
size_t size = 0;