File gcc48-bnc1028744.patch of Package cross-aarch64-gcc48-icecream-backend

Note this is a hack since offset zero is a valid shadow offset but not
used by any target supporting asan in GCC 4.8

Index: gcc/toplev.c
===================================================================
--- gcc/toplev.c	(revision 235439)
+++ gcc/toplev.c	(working copy)
@@ -1533,7 +1533,8 @@ process_options (void)
   /* Address Sanitizer needs porting to each target architecture.  */
   if (flag_asan
       && (targetm.asan_shadow_offset == NULL
-	  || !FRAME_GROWS_DOWNWARD))
+	  || !FRAME_GROWS_DOWNWARD
+	  || targetm.asan_shadow_offset () == 0))
     {
       warning (0, "-fsanitize=address not supported for this target");
       flag_asan = 0;
Index: gcc/config/rs6000/rs6000.c
===================================================================
--- gcc/config/rs6000/rs6000.c	(revision 235439)
+++ gcc/config/rs6000/rs6000.c	(working copy)
@@ -31667,6 +31667,9 @@ rs6000_final_prescan_insn (rtx insn, rtx
 static unsigned HOST_WIDE_INT
 rs6000_asan_shadow_offset (void)
 {
+  /* Runtime is not supported on powerpc*le yet.  */
+  if (DEFAULT_ABI == ABI_ELFv2)
+    return 0;
   return (unsigned HOST_WIDE_INT) 1 << (TARGET_64BIT ? 41 : 29);
 }
 #endif