[Bug 248795] std::random_shuffle broken with LLVM11

2020-08-22 Thread bugzilla-noreply
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=248795

--- Comment #2 from commit-h...@freebsd.org ---
A commit references this bug:

Author: dim
Date: Sat Aug 22 12:05:12 UTC 2020
New revision: 364482
URL: https://svnweb.freebsd.org/changeset/base/364482

Log:
  Add a few new source files to libc++, in particular the implementation
  part of std::random_shuffle. These were split off at some point by
  upstream, but I forgot to add them to our Makefile.

  This should allow some ports which use std::random_shuffle to correctly
  link again.

  Reported by:  thierry
  PR:   248795
  MFC after:6 weeks
  X-MFX-With:   r364284

Changes:
  head/lib/libc++/Makefile

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[Bug 248795] std::random_shuffle broken with LLVM11

2020-08-22 Thread bugzilla-noreply
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=248795

Thierry Thomas  changed:

   What|Removed |Added

 CC||thie...@freebsd.org

--- Comment #1 from Thierry Thomas  ---
Same error for the port math/hpcombi:

[14/22] : && /usr/bin/c++ -O2 -pipe -fstack-protector-strong -isystem
/usr/local/include -fno-strict-aliasing  -isystem /usr/local/include -O2 -pipe
-fstack-protector-strong -isystem /usr/local/include -fno-strict-aliasing
-isystem /usr/local/include -fstack-protector-strong -L/usr/local/lib
benchmark/CMakeFiles/sort.dir/sort.cpp.o -o benchmark/sort  -lbenchmark
-lpthread && :
FAILED: benchmark/sort
: && /usr/bin/c++ -O2 -pipe -fstack-protector-strong -isystem
/usr/local/include -fno-strict-aliasing  -isystem /usr/local/include -O2 -pipe
-fstack-protector-strong -isystem /usr/local/include -fno-strict-aliasing
-isystem /usr/local/include -fstack-protector-strong -L/usr/local/lib
benchmark/CMakeFiles/sort.dir/sort.cpp.o -o benchmark/sort  -lbenchmark
-lpthread && :
ld: error: undefined symbol: std::__1::__rs_default::~__rs_default()
>>> referenced by algorithm:3112 (/usr/include/c++/v1/algorithm:3112)
>>>   benchmark/CMakeFiles/sort.dir/sort.cpp.o:(rand_perms(int))
>>> referenced by algorithm:3112 (/usr/include/c++/v1/algorithm:3112)
>>>   benchmark/CMakeFiles/sort.dir/sort.cpp.o:(rand_perms(int))

ld: error: undefined symbol: std::__1::__rs_get()
>>> referenced by algorithm:3105 (/usr/include/c++/v1/algorithm:3105)
>>>   benchmark/CMakeFiles/sort.dir/sort.cpp.o:(rand_perms(int))

ld: error: undefined symbol: std::__1::__rs_default::operator()()
>>> referenced by algorithm:2950 (/usr/include/c++/v1/algorithm:2950)
>>>   benchmark/CMakeFiles/sort.dir/sort.cpp.o:(long
std::__1::uniform_int_distribution::operator()(s
td::__1::__rs_default&, std::__1::uniform_int_distribution::param_type
const&))
>>> referenced by algorithm:2950 (/usr/include/c++/v1/algorithm:2950)
>>>   benchmark/CMakeFiles/sort.dir/sort.cpp.o:(long
std::__1::uniform_int_distribution::operator()(s
td::__1::__rs_default&, std::__1::uniform_int_distribution::param_type
const&))
>>> referenced by algorithm:2950 (/usr/include/c++/v1/algorithm:2950)
>>>   benchmark/CMakeFiles/sort.dir/sort.cpp.o:(long
std::__1::uniform_int_distribution::operator()(s
td::__1::__rs_default&, std::__1::uniform_int_distribution::param_type
const&))
>>> referenced 1 more times
c++: error: linker command failed with exit code 1 (use -v to see invocation)

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[Bug 248745] /usr/bin/lldb dumps core when attempting to print variable with `p`, `fr v` works

2020-08-22 Thread bugzilla-noreply
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=248745

--- Comment #1 from commit-h...@freebsd.org ---
A commit references this bug:

Author: dim
Date: Sat Aug 22 10:55:55 UTC 2020
New revision: 364480
URL: https://svnweb.freebsd.org/changeset/base/364480

Log:
  Merge commit 1ce07cd614be from llvm git (by me):

Instantiate Error in Target::GetEntryPointAddress() only when
necessary

When Target::GetEntryPointAddress() calls
exe_module->GetObjectFile()->GetEntryPointAddress(), and the returned
entry_addr is valid, it can immediately be returned.

However, just before that, an llvm::Error value has been setup, but
in this case it is not consumed before returning, like is done
further below in the function.

In https://bugs.freebsd.org/248745 we got a bug report for this,
where a very simple test case aborts and dumps core:

* thread #1, name = 'testcase', stop reason = breakpoint 1.1
frame #0: 0x002018d4 testcase`main(argc=1,
argv=0x7fffea18) at testcase.c:3:5
   1int main(int argc, char *argv[])
   2{
-> 3return 0;
   4}
(lldb) p argc
Program aborted due to an unhandled Error:
Error value was Success. (Note: Success values must still be checked prior
to being destroyed).

Thread 1 received signal SIGABRT, Aborted.
thr_kill () at thr_kill.S:3
3   thr_kill.S: No such file or directory.
(gdb) bt
#0  thr_kill () at thr_kill.S:3
#1  0x0008049a0004 in __raise (s=6) at /usr/src/lib/libc/gen/raise.c:52
#2  0x000804916229 in abort () at /usr/src/lib/libc/stdlib/abort.c:67
#3  0x0451b5f5 in fatalUncheckedError () at
/usr/src/contrib/llvm-project/llvm/lib/Support/Error.cpp:112
#4  0x019cf008 in GetEntryPointAddress () at
/usr/src/contrib/llvm-project/llvm/include/llvm/Support/Error.h:267
#5  0x01bccbd8 in ConstructorSetup () at
/usr/src/contrib/llvm-project/lldb/source/Target/ThreadPlanCallFunction.cpp:67
#6  0x01bcd2c0 in ThreadPlanCallFunction () at
/usr/src/contrib/llvm-project/lldb/source/Target/ThreadPlanCallFunction.cpp:114
#7  0x020076d4 in InferiorCallMmap () at
/usr/src/contrib/llvm-project/lldb/source/Plugins/Process/Utility/InferiorCallPOSIX.cpp:97
#8  0x01f4be33 in DoAllocateMemory () at
/usr/src/contrib/llvm-project/lldb/source/Plugins/Process/FreeBSD/ProcessFreeBSD.cpp:604
#9  0x01fe51b9 in AllocatePage () at
/usr/src/contrib/llvm-project/lldb/source/Target/Memory.cpp:347
#10 0x01fe5385 in AllocateMemory () at
/usr/src/contrib/llvm-project/lldb/source/Target/Memory.cpp:383
#11 0x01974da2 in AllocateMemory () at
/usr/src/contrib/llvm-project/lldb/source/Target/Process.cpp:2301
#12 CanJIT () at
/usr/src/contrib/llvm-project/lldb/source/Target/Process.cpp:2331
#13 0x01a1bf3d in Evaluate () at
/usr/src/contrib/llvm-project/lldb/source/Expression/UserExpression.cpp:190
#14 0x019ce7a2 in EvaluateExpression () at
/usr/src/contrib/llvm-project/lldb/source/Target/Target.cpp:2372
#15 0x01ad784c in EvaluateExpression () at
/usr/src/contrib/llvm-project/lldb/source/Commands/CommandObjectExpression.cpp:414
#16 0x01ad86ae in DoExecute () at
/usr/src/contrib/llvm-project/lldb/source/Commands/CommandObjectExpression.cpp:646
#17 0x01a5e3ed in Execute () at
/usr/src/contrib/llvm-project/lldb/source/Interpreter/CommandObject.cpp:1003
#18 0x01a6c4a3 in HandleCommand () at
/usr/src/contrib/llvm-project/lldb/source/Interpreter/CommandInterpreter.cpp:1762
#19 0x01a6f98c in IOHandlerInputComplete () at
/usr/src/contrib/llvm-project/lldb/source/Interpreter/CommandInterpreter.cpp:2760
#20 0x01a90b08 in Run () at
/usr/src/contrib/llvm-project/lldb/source/Core/IOHandler.cpp:548
#21 0x019a6c6a in ExecuteIOHandlers () at
/usr/src/contrib/llvm-project/lldb/source/Core/Debugger.cpp:903
#22 0x01a70337 in RunCommandInterpreter () at
/usr/src/contrib/llvm-project/lldb/source/Interpreter/CommandInterpreter.cpp:2946
#23 0x01d9d812 in RunCommandInterpreter () at
/usr/src/contrib/llvm-project/lldb/source/API/SBDebugger.cpp:1169
#24 0x01918be8 in MainLoop () at
/usr/src/contrib/llvm-project/lldb/tools/driver/Driver.cpp:675
#25 0x0191a114 in main () at
/usr/src/contrib/llvm-project/lldb/tools/driver/Driver.cpp:890

Fix the incorrect error catch by only instantiating an Error object
if it is necessary.

Reviewed By: JDevlieghere

Differential Revision: https://reviews.llvm.org/D86355

  This should fix lldb aborting as described in the scenario above.

  Reported by:  dmgk
  PR:   248745

Changes:
  head/contrib/llvm-project/lldb/source/Target/Target.cpp

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Re: /usr/lib/libomp.so : is there a reason that aarch64 does not have such by default?

2020-08-22 Thread myfreeweb



On August 21, 2020 6:52:23 PM UTC, Mark Millard via freebsd-arm 
 wrote:
>My context: head ( currently at -r363590 )
>
>man src.conf is explicit that WITHOUT_OPENMP is the default for
>aarch64 (for example).
[...]
>Nothing stands out for why WITH_OPENMP is in use by default only
>for amd64, i386, and powerpc64.

Because nobody has bothered to merge https://reviews.freebsd.org/D21167
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