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-rw-r--r--sysdeps/s390/ffs.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/sysdeps/s390/ffs.c b/sysdeps/s390/ffs.c
index f987149a8a..ed7fdc682e 100644
--- a/sysdeps/s390/ffs.c
+++ b/sysdeps/s390/ffs.c
@@ -63,6 +63,8 @@ __ffs (x)
 }
 
 weak_alias (__ffs, ffs)
+#if ULONG_MAX == UINT_MAX
 #undef ffsl
 weak_alias (__ffs, ffsl)
+#endif