Index: gcc.dg/pr42427.c
===================================================================
--- gcc.dg/pr42427.c	(revision 160946)
+++ gcc.dg/pr42427.c	(working copy)
@@ -2,12 +2,10 @@
 /* { dg-options "-O2 -fexceptions -fnon-call-exceptions -fpeel-loops" } */
 /* { dg-require-effective-target ilp32 } */
 
-#include <complex.h>
+extern double myabs (_Complex double);
 
-extern double myabs (complex double);
-
 void
-test (double *help, complex double *wm, long nz)
+test (double *help, _Complex double *wm, long nz)
 {
   long k;
   double znew;