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-rw-r--r--stdlib/qsort.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/stdlib/qsort.c b/stdlib/qsort.c
index 7e36ffea97..72d6b244df 100644
--- a/stdlib/qsort.c
+++ b/stdlib/qsort.c
@@ -20,6 +20,9 @@
 #include <stdlib.h>
 #include <string.h>
 
+extern void _quicksort __P ((void *const pbase, size_t total_elems,
+			     size_t size, __compar_fn_t cmp));
+
 /* Byte-wise swap two items of size SIZE. */
 #define SWAP(a, b, size)						      \
   do									      \