asort: Use qsort_r if the system provides it.

[ccan] / ccan / asort / asort.h

diff --git a/ccan/asort/asort.h b/ccan/asort/asort.h
index 731f9bde4cc1e868bec846c19dff1b7502fc204b..5024a057cde5d548fe9986dc5e2abc375190cec6 100644 (file)
--- a/ccan/asort/asort.h
+++ b/ccan/asort/asort.h
@@ -1,5 +1,6 @@
 #ifndef CCAN_ASORT_H
 #define CCAN_ASORT_H
+#include "config.h"
 #include <ccan/typesafe_cb/typesafe_cb.h>
 #include <stdlib.h>
 
@@ -18,14 +19,18 @@
  */
 #define asort(base, num, cmp, ctx)                                     \
 _asort((base), (num), sizeof(*(base)),                                 \
-       cast_if_type(int (*)(const void *, const void *, const void *), \
+       cast_if_type(int (*)(const void *, const void *, void *),       \
                    (cmp), &*(cmp),                                     \
                    int (*)(const __typeof__(*(base)) *,                \
                            const __typeof__(*(base)) *,                \
                            __typeof__(ctx))), (ctx))
 
+#if HAVE_QSORT_R_PRIVATE_LAST
+#define _asort(b, n, s, cmp, ctx) qsort_r(b, n, s, cmp, ctx)
+#else
 void _asort(void *base, size_t nmemb, size_t size,
-           int(*compar)(const void *, const void *, const void *),
-           const void *ctx);
+           int(*compar)(const void *, const void *, void *),
+           void *ctx);
+#endif
 
 #endif /* CCAN_ASORT_H */