[PATCH] powerpc: Fix error message during relocation overflow

[Tulio Magno Quites Machado Filho]

The function _itoa_word() writes characters from the higher address to
the lower address, requiring the destination string to reserve that size
before calling it.

2017-10-18  Tulio Magno Quites Machado Filho  <tuliom@linux.vnet.ibm.com>

	* sysdeps/powerpc/powerpc64/dl-machine.c (_dl_reloc_overflow):
	Reserve 16 chars to reloc_addr before calling _itoa_word.

Signed-off-by: Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com>
---
 sysdeps/powerpc/powerpc64/dl-machine.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/sysdeps/powerpc/powerpc64/dl-machine.c b/sysdeps/powerpc/powerpc64/dl-machine.c
index 2cfd43b..4c1b556 100644
--- a/sysdeps/powerpc/powerpc64/dl-machine.c
+++ b/sysdeps/powerpc/powerpc64/dl-machine.c
@@ -31,7 +31,10 @@ _dl_reloc_overflow (struct link_map *map,
   char buffer[1024];
   char *t;
   t = stpcpy (buffer, name);
-  t = stpcpy (t, " reloc at 0x");
+  /* Notice that _itoa_word() writes characters from the higher address to the
+     lower address, requiring the destination string to reserve all the
+     required size before the call.  */
+  t = stpcpy (t, " reloc at 0x0000000000000000");
   _itoa_word ((unsigned long) reloc_addr, t, 16, 0);
   if (refsym)
     {
-- 
2.9.5