https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65255
--- Comment #10 from Jonathan Wakely ---
(In reply to Jonathan Wakely from comment #8)
> I have a patch for std::thread which would mean it doesn't use shared_ptr,
> so this wouldn't be a problem even if you don't use the same arm version.
This
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65255
--- Comment #5 from Andrew Pinski pinskia at gcc dot gnu.org ---
arm-* defaults to earlier arm than v7 which does not have atomics in the ISA.
Your native compiler most likely defaulted to armv7 which uses the atomic
instructions directly.
Can
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65255
--- Comment #6 from Yichao Yu yyc1992 at gmail dot com ---
Adding `-march=armv7-a` indeed fixes the issue. Thanks.
Does this mean that `std::thread` is not supported on armv6? Would be nice to
have a warning/error if it is possible to detect
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65255
--- Comment #7 from Jonathan Wakely redi at gcc dot gnu.org ---
It's supported fine, but you need to compile your code that uses std::thread so
it is compatible with the libstdc++.so library you link to.
If libstdc++ is compiled to use atomic
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65255
Yichao Yu yyc1992 at gmail dot com changed:
What|Removed |Added
Status|UNCONFIRMED |RESOLVED
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65255
--- Comment #8 from Jonathan Wakely redi at gcc dot gnu.org ---
I have a patch for std::thread which would mean it doesn't use shared_ptr, so
this wouldn't be a problem even if you don't use the same arm version.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65255
--- Comment #2 from Yichao Yu yyc1992 at gmail dot com ---
ARM environment is ArchLinuxARM (armv7h)[1] on a Xilinx Zynq 0702 Eval board
which has a dual-core Cortex-a9 processor.
[1] http://archlinuxarm.org/packages
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65255
--- Comment #3 from Yichao Yu yyc1992 at gmail dot com ---
I didn't keep the config.log file used to compile the gcc I used to compile the
binary attached but here's the config.log of a slightly later snapshot
(20150204, which is the same used
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65255
--- Comment #1 from Yichao Yu yyc1992 at gmail dot com ---
Created attachment 34904
-- https://gcc.gnu.org/bugzilla/attachment.cgi?id=34904action=edit
Source and output programs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65255
--- Comment #4 from Yichao Yu yyc1992 at gmail dot com ---
Created attachment 34905
-- https://gcc.gnu.org/bugzilla/attachment.cgi?id=34905action=edit
config.log of a more recent snapshot
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