When size is zero the buffer src and dest buffers might be NULL. Signed-off-by: Mark Wielaard <[email protected]> --- libelf/ChangeLog | 4 ++++ libelf/gelf_xlate.c | 5 +++-- 2 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/libelf/ChangeLog b/libelf/ChangeLog index b8c20cc..b749c08 100644 --- a/libelf/ChangeLog +++ b/libelf/ChangeLog @@ -1,5 +1,9 @@ 2015-05-30 Mark Wielaard <[email protected]> + * gelf_xlate.c (elf_cvt_Byte): Only call memmove with non-zero size. + +2015-05-30 Mark Wielaard <[email protected]> + * elf32_updatefile.c (updatemmap): Only call mempcpy and update last_position when d_size is non-zero. diff --git a/libelf/gelf_xlate.c b/libelf/gelf_xlate.c index c417051..c5805e7 100644 --- a/libelf/gelf_xlate.c +++ b/libelf/gelf_xlate.c @@ -1,5 +1,5 @@ /* Transformation functions for ELF data types. - Copyright (C) 1998,1999,2000,2002,2004,2005,2006,2007 Red Hat, Inc. + Copyright (C) 1998,1999,2000,2002,2004,2005,2006,2007,2015 Red Hat, Inc. This file is part of elfutils. Written by Ulrich Drepper <[email protected]>, 1998. @@ -52,7 +52,8 @@ static void (elf_cvt_Byte) (void *dest, const void *src, size_t n, int encode __attribute__ ((unused))) { - memmove (dest, src, n); + if (n != 0) + memmove (dest, src, n); } -- 2.1.0
