--- asymptote-1.87-orig/prc/PRCdouble.cc	2009-09-20 07:28:23.000000000 +0200
+++ asymptote-1.87/prc/PRCdouble.cc	2009-09-28 23:28:48.070083578 +0200
@@ -23,7 +23,7 @@
 }
 
 #ifdef WORDS_BIGENDIAN
-void *memrchr(const void *buf,int c,size_t count)
+const void *memrchr(const void *buf,int c,size_t count)
 {
   unsigned char
       *pcBuffer=(unsigned char *)buf,
--- asymptote-1.87-orig/prc/PRCdouble.h	2009-09-20 07:28:23.000000000 +0200
+++ asymptote-1.87/prc/PRCdouble.h	2009-09-28 23:28:24.637377760 +0200
@@ -106,7 +106,7 @@
 int stCOFDOECompare(const void*,const void*);
 
 #ifdef WORDS_BIGENDIAN
-void *memrchr(const void *,int,size_t);
+const void *memrchr(const void *,int,size_t);
 #endif