AC_CHECK_FUNCS lutimes
+builtin_mul_overflow_code="
+#include <stddef.h>
+int main(int argc, char **argv)
+{
+ size_t n = 0, size = 0, total;
+ __builtin_mul_overflow(n, size, &total);
+ return 0;
+}
+"
+
+TLOGN "checking for __builtin_mul_overflow"
+if bup_try_c_code "$builtin_mul_overflow_code"; then
+ AC_DEFINE BUP_HAVE_BUILTIN_MUL_OVERFLOW 1
+ TLOG ' (found)'
+else
+ TLOG ' (not found)'
+fi
+
+
AC_CHECK_FUNCS mincore
mincore_incore_code="