[Bug c/50506] New: gcc fails at assembly with -O1 while inlining is forced

["galtgendo at o2 dot pl" <gcc-bugzilla@gcc.gnu.org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50506

             Bug #: 50506
           Summary: gcc fails at assembly with -O1 while inlining is
                    forced
    Classification: Unclassified
           Product: gcc
           Version: 4.6.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: galtgendo@o2.pl


Created attachment 25354
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25354
preprocesed code

This bug simply separates the latest comments of bug 39333 for better
visibility.

Using built-in specs.
COLLECT_GCC=gcc-4.6.1
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/i686-pc-linux-gnu/4.6.1/lto-wrapper
Target: i686-pc-linux-gnu
Configured with:
/mnt/workbox/builds/portage/sys-devel/gcc-4.6.1-r1/work/gcc-4.6.1/configure
--prefix=/usr --bindir=/usr/i686-pc-linux-gnu/gcc-bin/4.6.1
--includedir=/usr/lib/gcc/i686-pc-linux-gnu/4.6.1/include
--datadir=/usr/share/gcc-data/i686-pc-linux-gnu/4.6.1
--mandir=/usr/share/gcc-data/i686-pc-linux-gnu/4.6.1/man
--infodir=/usr/share/gcc-data/i686-pc-linux-gnu/4.6.1/info
--with-gxx-include-dir=/usr/lib/gcc/i686-pc-linux-gnu/4.6.1/include/g++-v4
--host=i686-pc-linux-gnu --build=i686-pc-linux-gnu --disable-altivec
--disable-fixed-point --with-ppl --with-cloog --disable-ppl-version-check
--with-cloog-include=/usr/include/cloog-ppl --enable-lto --enable-nls
--without-included-gettext --with-system-zlib --disable-werror
--enable-secureplt --disable-multilib --enable-libmudflap --disable-libssp
--enable-libgomp
--with-python-dir=/share/gcc-data/i686-pc-linux-gnu/4.6.1/python
--enable-checking=release --disable-libgcj --with-arch=i686 --enable-objc-gc
--enable-languages=c,c++,objc,fortran --enable-shared --enable-threads=posix
--enable-__cxa_atexit --enable-clocale=gnu
--with-bugurl=http://bugs.gentoo.org/ --with-pkgversion='Gentoo 4.6.1-r1 p1.0,
pie-0.4.5' --disable-libstdcxx-pch
Thread model: posix
gcc version 4.6.1 (Gentoo 4.6.1-r1 p1.0, pie-0.4.5) 
COLLECT_GCC_OPTIONS='-v' '-Wall' '-O1' '-c' '-o' 'fprintf-bug-code-4.6.o'
'-save-temps' '-mtune=generic' '-march=i686'
 /usr/libexec/gcc/i686-pc-linux-gnu/4.6.1/cc1 -fpreprocessed
fprintf-bug-code-4.6.i
-quiet -dumpbase fprintf-bug-code-4.6.i -mtune=generic -march=i686
-auxbase-strip
fprintf-bug-code-4.6.o -O1 -Wall -version -o fprintf-bug-code-4.6.s
GNU C (Gentoo 4.6.1-r1 p1.0, pie-0.4.5) version 4.6.1 (i686-pc-linux-gnu)
    compiled by GNU C version 4.6.1, GMP version 5.0.2, MPFR version 3.0.1-p4,
MPC version 0.8.2
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
GNU C (Gentoo 4.6.1-r1 p1.0, pie-0.4.5) version 4.6.1 (i686-pc-linux-gnu)
    compiled by GNU C version 4.6.1, GMP version 5.0.2, MPFR version 3.0.1-p4,
MPC version 0.8.2
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 5f6717c7397ac8a8888626933ce7eb52
fprintf-bug-code-4.6.i: In function ‘write_cfg’:
fprintf-bug-code-4.6.i:71:1: sorry, unimplemented: inlining failed in call to
‘fprintf’: indirect function call with a yet undetermined callee
fprintf-bug-code-4.6.i:78:7: sorry, unimplemented: called from here

The code builds fine is either -fipa-cp is added or '__attribute__
((__always_inline__))' is removed.