https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81004
--- Comment #25 from Jan Hubicka ---
Author: hubicka
Date: Tue Feb 6 13:27:04 2018
New Revision: 257412
URL: https://gcc.gnu.org/viewcvs?rev=257412=gcc=rev
Log:
PR lto/81004
* lto.c: Include builtins.h
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81004
--- Comment #24 from Matt Godbolt ---
Thanks so much for looking in to this Jan!
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81004
--- Comment #23 from Jan Hubicka ---
Created attachment 43340
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43340=edit
Patch in am testing
This patch transitions the info to merged tree and adds sanity check that we
miss no resolutions.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81004
--- Comment #22 from Jan Hubicka ---
OK, the bug reproduces with tree.c changes reverted and I see what is going on.
We have two files in res file we get:
2
lines.o 7
245 4d647b2020ca5815 PREVAILING_DEF_IRONLY _Z8validatev
334 4d647b2020ca5815
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81004
--- Comment #21 from Jan Hubicka ---
> It's really fixed on trunk since r257023.
Seems like it just went latent. I do not see how that change can fix the
problem.
Honza
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81004
--- Comment #20 from Martin Liška ---
It's really fixed on trunk since r257023.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81004
--- Comment #19 from Jan Hubicka ---
Weird, for me I see the problem reproducing with
$ ~/8-install/bin/g++ --version
g++ (GCC) 8.0.1 20180124 (experimental)
Copyright (C) 2018 Free Software Foundation, Inc.
This is free software; see the source
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81004
Jan Hubicka changed:
What|Removed |Added
CC||hubicka at gcc dot gnu.org
--- Comment
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81004
Richard Biener changed:
What|Removed |Added
Target Milestone|7.3 |7.4
--- Comment #17 from Richard
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81004
--- Comment #16 from Matt Godbolt ---
I see the target milestone is 7.3, but this bug is still marked NEW. Has there
been any further thought on this? I realise this is a tough one, but we've had
to either disable LTO, or roll back to c++14 on
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81004
Jakub Jelinek changed:
What|Removed |Added
CC||jakub at gcc dot gnu.org
--- Comment
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81004
Richard Biener changed:
What|Removed |Added
Target Milestone|7.2 |7.3
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81004
Richard Biener changed:
What|Removed |Added
Target Milestone|7.2 |7.3
--- Comment #15 from Richard
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81004
Richard Biener changed:
What|Removed |Added
Target Milestone|7.2 |7.3
--- Comment #15 from Richard
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81004
--- Comment #14 from Matt Godbolt ---
I've just hit this same issue too (in only one of several projects I build with
7.1 and LTO). If anyone has any thoughts at a workaround I'd be very
appreciative. Thanks!
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81004
--- Comment #13 from Jonathan Wakely ---
If you undo that change then you can't link C++17 programs using std::string at
all, not just using LTO. That's why the change was done in the first place.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81004
--- Comment #12 from Azat ---
> Started with r238959.
If you revert this then it fixes some of problems (even though this is a
temporary solution), but there are more, and now this is *only without -flto*
(i.e. -Wall "-Werror -Wunknown-pragmas
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81004
--- Comment #11 from Markus Trippelsdorf ---
It goes from:
_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED1Ev/37 (__comp_dtor )
@0x7f9a6e65eb80
Type: function definition
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81004
Jonathan Wakely changed:
What|Removed |Added
Component|libstdc++ |lto
--- Comment #10 from Jonathan
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81004
--- Comment #8 from Martin Liška ---
Started with r238959.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81004
Markus Trippelsdorf changed:
What|Removed |Added
CC||hubicka at ucw dot cz
--- Comment
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81004
Markus Trippelsdorf changed:
What|Removed |Added
Attachment #41494|0 |1
is obsolete|
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81004
--- Comment #5 from Markus Trippelsdorf ---
Created attachment 41494
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41494=edit
crappy auto reduced testcase
Here's the reduced testcase anyway:
% g++ -O2 -c value_semantic.ii
% g++ -w
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81004
--- Comment #4 from Markus Trippelsdorf ---
Created attachment 41493
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41493=edit
unreduced testcase
Here is the unreduced testcase:
g++ -w -flto -Wl,--no-demangle l.ii o.ii -O1 -std=c++1z
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81004
Markus Trippelsdorf changed:
What|Removed |Added
Keywords||lto
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