http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55734



--- Comment #9 from Teresa Johnson <tejohnson at google dot com> 2012-12-18 
16:31:08 UTC ---

On Tue, Dec 18, 2012 at 8:25 AM, aldyh at gcc dot gnu.org

<gcc-bugzi...@gcc.gnu.org> wrote:

>

> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55734

>

> Aldy Hernandez <aldyh at gcc dot gnu.org> changed:

>

>            What    |Removed                     |Added

> ----------------------------------------------------------------------------

>   Attachment #28999|0                           |1

>         is obsolete|                            |

>

> --- Comment #8 from Aldy Hernandez <aldyh at gcc dot gnu.org> 2012-12-18 
> 16:25:49 UTC ---

> Created attachment 29000

>   --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29000

> proposed patch

>

> Duh, they're always available.  Like this?



Things will build, but you will presumably get an undefined symbol in

your libgcov.a, which would result in an undefined trying to build

with -fprofile-generate. Can you verify that this works. I just

checked with a similar change, which yields:



$ nm gcc/libgcov.a | grep popc

                 U popcount_hwi



/home/tejohnson/extra/gcc_trunk_5_validate/bld-gcc/gcc/libgcov.a(_gcov.o):

In function `__gcov_read_summary':

libgcov.c:(.text+0x7f3): undefined reference to `popcount_hwi'

collect2: error: ld returned 1 exit status



Teresa



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Teresa Johnson | Software Engineer | tejohn...@google.com | 408-460-2413

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