Kir Kolyshkin 0367a1f6fe Drop prefix from own memcpy/memset/memcmp ... C compiler might generate calls to memcpy, memset, memcmp, and memmove as it seem fit (so far we haven't seen memmove being required). That means we need to provide our own versions of it for code which is not linked to a libc. We already have a solution for that in commit bdf6051 ("pie: provide memcpy/memcmp/memset for noglibc case") but we faced another problem of compiler trying to optimize our builtin_memset() by inserting calls to memset() which is just an alias in our case and so it lead to infinite recursion. This was workarounded in commit 8ea0ba7 ("string.h: fix memset over-optimization with clang") but it's not clear that was a proper fix. This patch is considered to be the real solution. As we don't have any other implementations of memset/memcpy/memcmp in non-libc case, we can call ours without any prefixes and avoid using weak aliases. Implementation notes: 1. mem*() functions code had to be moved from .h to .c for the functions to be compatible with their prototypes declared in /usr/include/string.h (i.e. "extern"). 2. FORTIFY_SOURCE needed to be disabled for code not linked to libc, because otherwise memcpy() may be replaced with a macro that expands to __memcpy_chk() which of course can't be resolved during linking. https://travis-ci.org/kolyshkin/criu/builds/198415449 Signed-off-by: Kir Kolyshkin <kir@openvz.org> Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>		2017-02-06 13:29:54 +03:00
..
arch	headers: Switch to common linkage.h	2016-11-21 23:15:19 +03:00
asm-generic	headers: Fix iquote for include/common	2016-11-03 00:13:04 +03:00
bitops.h	common: Use complete path in inclusion	2016-11-03 00:13:04 +03:00
bitsperlong.h	common: bitsperlong -- Specify complete path	2016-11-03 00:13:04 +03:00
bug.h	include/common: Move bug.h in	2016-11-03 00:13:03 +03:00
compiler.h	common: Move compiler.h into	2016-11-03 00:13:03 +03:00
err.h	headers: Move err.h to common	2016-11-03 00:13:04 +03:00
list.h	common: Move compiler.h into	2016-11-03 00:13:03 +03:00
page.h	common: Use complete path in inclusion	2016-11-03 00:13:04 +03:00
scm-code.c	Drop prefix from own memcpy/memset/memcmp	2017-02-06 13:29:54 +03:00
scm.h	scm: Allow to pass flags argument to recv_fds()	2017-02-03 18:04:22 +03:00
xmalloc.h	headers: Move xmalloc to common	2016-11-03 00:13:04 +03:00