[Bug c/33763] [4.6/4.7/4.8 Regression] Bogus inlining failed in call to `xxx': redefined extern inline functions are not considered for inlining

["kaltsi+gnu at gmail dot com" <gcc-bugzilla@gcc.gnu.org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33763

Juha Kallioinen <kaltsi+gnu at gmail dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |kaltsi+gnu at gmail dot com

--- Comment #41 from Juha Kallioinen <kaltsi+gnu at gmail dot com> ---
Maybe this failure with a newly built gcc 4.8 is related to this bug.

Built gcc today from
commit a846b696b9f3e9b9caab7e43ef8450cbded2715c
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_8-branch@202762
138bc75d-0d04-0410-961f-82ee72b

~/gcc48/bin$ ./gcc -v
Using built-in specs.
COLLECT_GCC=./gcc
COLLECT_LTO_WRAPPER=/home/kaltsi/gcc48/libexec/gcc/x86_64-unknown-linux-gnu/4.8.2/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../gcc/configure --prefix=/home/kaltsi/gcc48
--disable-bootstrap --with-tune=generic --disable-multilib
--enable-checking=release --with-system-zlib --enable-__cxa_atexit
--disable-libunwind-exceptions --enable-gnu-unique-object --enable-lto
--enable-linker-build-id --enable-languages=c,c++ --enable-threads=posix
--enable-shared --disable-libgcj
Thread model: posix
gcc version 4.8.2 20130920 (prerelease) (GCC) 

Compiling the following simple program with these options on an Ubuntu 12.04
causes a failure:

$ gcc -Wp,-D_FORTIFY_SOURCE=2 -O2 -D_GNU_SOURCE=1




-- foo.c --
#include <sys/socket.h>

extern ssize_t recvfrom(int s, void *buf, size_t len, int flags, struct
sockaddr *from, socklen_t *fromlen);

int main()
{
  int s, flags; void *buf; size_t len; struct sockaddr *from; socklen_t*
fromlen;
  return(recvfrom(s, buf, len, flags, from, fromlen));
}

-- foo.c --

~/gcc48/bin$ ./gcc -Wp,-D_FORTIFY_SOURCE=2 -O2 -D_GNU_SOURCE=1 foo.c
In file included from /usr/include/x86_64-linux-gnu/sys/socket.h:251:0,
                 from foo.c:5:
foo.c: In function ‘main’:
/usr/include/x86_64-linux-gnu/bits/socket2.h:65:1: error: inlining failed in
call to always_inline ‘recvfrom’: mismatched arguments
 recvfrom (int __fd, void *__restrict __buf, size_t __n, int __flags,
 ^
foo.c:12:18: error: called from here
   return(recvfrom(s, buf, len, flags, from, fromlen));
                  ^
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From: "rogerdpack at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/16371] libstdc++ fails for crosses
Date: Fri, 20 Sep 2013 22:16:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id\x16371

roger pack <rogerdpack at gmail dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |rogerdpack at gmail dot com

--- Comment #27 from roger pack <rogerdpack at gmail dot com> ---
(sorry to comment on something so ancient).  Anyway ran into something similar
today, a couple of hints/clues: mine was caused by having an empty environment
variable CFLAGS (like bash's export CFLAGS=).  So unsetting that and I was good
to go.
Also (as others have noted) this error message basically means "your cross
compiler is unable to link at all" or something like that (the config.log that
may describe it is called something like
i686-w64-mingw32/libstdc++-v3/config.log)