[Bug middle-end/65256] [5 regression] Undefined symbols linking f951

[Bug middle-end/65256] [5 regression] Undefined symbols linking f951

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65256

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |build
           Priority|P3                          |P1
   Target Milestone|---                         |5.0

[Bug middle-end/65256] [5 regression] Undefined symbols linking f951

[dave.anglin at bell dot net]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65256

--- Comment #2 from dave.anglin at bell dot net ---
On 2015-03-02 2:36 PM, law at redhat dot com wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65256
>
> Jeffrey A. Law <law at redhat dot com> changed:
>
>             What    |Removed                     |Added
> ----------------------------------------------------------------------------
>                   CC|                            |law at redhat dot com
>
> --- Comment #1 from Jeffrey A. Law <law at redhat dot com> ---
> John, is this with SOM or ELF?  If the former, it looks like something might be
> missing its .import/.export statement.  What do the underlying symbols look
> like for the reference and the definition of those symbols?

It is with SOM.

I would say we have missing .import directives at least for first:

_ZTVN12_GLOBAL__N_18pass_dceE:
         .word   0
         .word   0
         .word   P%_ZN12_GLOBAL__N_18pass_dceD1Ev
         .word   P%_ZN12_GLOBAL__N_18pass_dceD0Ev
         .word   P%_ZN12_GLOBAL__N_18pass_dce5cloneEv
         .word   P%_ZN12_GLOBAL__N_18pass_dce4gateEP8function
         .word   P%_ZN12_GLOBAL__N_18pass_dce7executeEP8function

There is no local definition of 
_ZN12_GLOBAL__N_18pass_dce4gateEP8function and
no .import directive for it.

r220868 was ok and r220883 bad.

Dave

[Bug middle-end/65256] [5 regression] Undefined symbols linking f951

[dave.anglin at bell dot net]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65256

--- Comment #3 from dave.anglin at bell dot net ---
On 2015-03-02 3:21 PM, John David Anglin wrote:
> r220868 was ok and r220883 bad. 
My guess is that the problem was introduced in r220875.

Dave

[Bug middle-end/65256] [5 regression] Undefined symbols linking f951

[law at redhat dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65256

--- Comment #4 from Jeffrey A. Law <law at redhat dot com> ---
Certainly possible.   We ought to be able to see the problem at the assembly
level with a cross compiler, which will help greatly with debugging :-)

I wonder if the ICF framework unified the gate function with something else. 
That ought to show up in the .icf dump.

[Bug middle-end/65256] [5 regression] Undefined symbols linking f951

[dave.anglin at bell dot net]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65256

--- Comment #5 from dave.anglin at bell dot net ---
On 2015-03-02 3:56 PM, law at redhat dot com wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65256
>
> --- Comment #4 from Jeffrey A. Law <law at redhat dot com> ---
> Certainly possible.   We ought to be able to see the problem at the assembly
> level with a cross compiler, which will help greatly with debugging :-)
Darn, I just deleted preprocessed source.

This bug may be related to  PR 65150 which is fixed.  Need to recheck.

Dave

[Bug middle-end/65256] [5 regression] Undefined symbols linking f951

[law at redhat dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65256

--- Comment #6 from Jeffrey A. Law <law at redhat dot com> ---
Damn, while I was away, the one thing that came to mind was to ask you for the
preprocessed source so that the issue could be analyzed with a cross compiler.

If indeed this is fixed by 65150, then I'll count us as lucky.

Obviously if it isn't fixed by the patch for 65150, please attach the
preprocessed source for further investigation.

[Bug middle-end/65256] [5 regression] Undefined symbols linking f951

[danglin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65256

John David Anglin <danglin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |FIXED

--- Comment #7 from John David Anglin <danglin at gcc dot gnu.org> ---
Build of r221126 was successful.