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https://issues.apache.org/jira/browse/STDCXX-799?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12584684#action_12584684
]
Martin Sebor commented on STDCXX-799:
-------------------------------------
The latest Intel compiler understands all the gcc built-ins with the exception
of {{__builtin_memmove}}:
{noformat}
$ cat t.c && icc -V t.c || icc -V -D__builtin_memmove=__builtin_memcpy
int main ()
{
char a [1];
char b [2];
__builtin_memcpy (a, b , sizeof a);
__builtin_memcmp (a, b , sizeof a);
__builtin_memset (a, 0, sizeof a);
__builtin_strlen (a);
__builtin_memmove (a, b , sizeof a);
}
Intel(R) C Compiler for applications running on IA-32, Version 10.1 Build
20070913 Package ID: l_cc_p_10.1.008
Copyright (C) 1985-2007 Intel Corporation. All rights reserved.
Edison Design Group C/C++ Front End, version 3.8 (Sep 13 2007 22:20:59)
Copyright 1988-2006 Edison Design Group, Inc.
t.c(10): warning #266: function "__builtin_memmove" declared implicitly
__builtin_memmove (a, b , sizeof a);
^
GNU ld version 2.17.50.0.18-1 20070731
/tmp/icc5J6ZvI.o: In function `main':
t.c:(.text+0x25): undefined reference to `__builtin_memmove'
Intel(R) C Compiler for applications running on IA-32, Version 10.1 Build
20070913 Package ID: l_cc_p_10.1.008
Copyright (C) 1985-2007 Intel Corporation. All rights reserved.
{noformat}
> [Intel C++ 10.0/Linux] error in rw/_traits.h on __builtin_memmove
> -----------------------------------------------------------------
>
> Key: STDCXX-799
> URL: https://issues.apache.org/jira/browse/STDCXX-799
> Project: C++ Standard Library
> Issue Type: Bug
> Affects Versions: trunk
> Environment: Intel C++ 10.0/Linux, gcc 4.1 as the back end
> Reporter: Martin Sebor
> Assignee: Farid Zaripov
> Priority: Blocker
> Fix For: 4.2.1
>
> Original Estimate: 1h
> Time Spent: 1h
> Remaining Estimate: 0h
>
> The error below shows up in logs for our optimized (not debug) nightly builds
> with Intel C++ 10.0 on Linux with gcc 4.1 for the back end:
> {noformat}
> ### gmake -Cbuild/lib BUILDMODE=pthreads,shared,optimized,wide
> CONFIG=icc.config 2>&1 | sed -e
> "s/\/build2\/batman\/5.0.0\/builds\/34590289\/source-buildspace\/build/\$(BUILDDIR)/g;s/\/build2\/batman\/5.0.0\/builds\/34590289\/source-buildspace/\$(TOPDIR)/g"
> | tee /tmp/build.19074.log:
> gmake: Entering directory `$(BUILDDIR)/lib'
> ...
> icc -c -I$(TOPDIR)/include/ansi -D_REENTRANT -I$(TOPDIR)/include
> -I$(BUILDDIR)/include -cxxlib-nostd -O2 -w1 -fpic
> $(TOPDIR)/src/bitset.cpp
> $(TOPDIR)/include/rw/_traits.h(439): error: identifier "__builtin_memmove" is
> undefined
> _RWSTD_MEMMOVE (__s1, __s2, __n);
> ^
> compilation aborted for $(TOPDIR)/src/bitset.cpp (code 2)
> {noformat}
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