make check fails after successful compilation with clang on cygwin

[it3q 0]

Hi!

I'm trying to compile and install systemC 2.3.3 using clang on cygwin. After successful compilation during 'make check' I got the following error:

=================================================
   SystemC 2.3.3: examples/sysc/test-suite.log
=================================================

# TOTAL: 22
# PASS:  21
# SKIP:  0
# XFAIL: 0
# FAIL:  1
# XPASS: 0
# ERROR: 0

.. contents:: :depth: 2

FAIL: 2.1/reset_signal_is/test.sh
=================================


        SystemC 2.3.3-Accellera --- Sep 24 2019 08:02:39
        Copyright (c) 1996-2018 by all Contributors,
        ALL RIGHTS RESERVED
***ERROR:
13a14,102
> 13 ns: reset
> 14 ns: 0
> 15 ns: 1
> 16 ns: 2
> 17 ns: 3
> 18 ns: 4
> 19 ns: 5
> 20 ns: 6
> 21 ns: 7
> 22 ns: 8
> 23 ns: 9
> 24 ns: 10
> 25 ns: 11
> 26 ns: 12
> 27 ns: 13
> 28 ns: 14
> 29 ns: 15
> 30 ns: 16
> 31 ns: 17
> 32 ns: 18
> 33 ns: reset
> 34 ns: 0
> 35 ns: 1
> 36 ns: 2
> 37 ns: 3
> 38 ns: 4
> 39 ns: 5
> 40 ns: 6
> 41 ns: 7
> 42 ns: 8
> 43 ns: 9
> 44 ns: 10
> 45 ns: 11
> 46 ns: 12
> 47 ns: 13
> 48 ns: 14
> 49 ns: 15
> 50 ns: 16
> 51 ns: 17
> 52 ns: 18
> 53 ns: reset
> 54 ns: 0
> 55 ns: 1
> 56 ns: 2
> 57 ns: 3
> 58 ns: 4
> 59 ns: 5
> 60 ns: 6
> 61 ns: 7
> 62 ns: 8
> 63 ns: 9
> 64 ns: 10
> 65 ns: 11
> 66 ns: 12
> 67 ns: 13
> 68 ns: 14
> 69 ns: 15
> 70 ns: 16
> 71 ns: 17
> 72 ns: 18
> 73 ns: reset
> 74 ns: 0
> 75 ns: 1
> 76 ns: 2
> 77 ns: 3
> 78 ns: 4
> 79 ns: 5
> 80 ns: 6
> 81 ns: 7
> 82 ns: 8
> 83 ns: 9
> 84 ns: 10
> 85 ns: 11
> 86 ns: 12
> 87 ns: 13
> 88 ns: 14
> 89 ns: 15
> 90 ns: 16
> 91 ns: 17
> 92 ns: 18
> 93 ns: reset
> 94 ns: 0
> 95 ns: 1
> 96 ns: 2
> 97 ns: 3
> 98 ns: 4
> 99 ns: 5
> 100 ns: 6
> Done
 

I configured systemC in the following way:

export CXX=clang++
export CC=clang
../configure --prefix=/usr/local/systemc-2.3.3/ --enable-pthreads --enable-debug

clang version:

$ clang++ --version
clang version 8.0.1 (tags/RELEASE_801/final)
Target: x86_64-unknown-windows-cygnus
Thread model: posix
InstalledDir: /usr/bin

'make check' runs without failure when using GCC compiler.

Does anybody have a hint what could go wrong in case of clang?

 

Thanks, in advance!

Peter

[Roman Popov 72]

Clang 8 is quite new compiler and SystemC 2.3.3 was not tested against it.  Do you see this issue only in Cygwin?  Or in general with Clang 8, including Clang 8 on MacOS / Linux ?

[it3q 0]

Right now I don't have the opportunity to check Clang 8 on other OS. I tried to compile with Clang 5.0.1 on cygwin. The same test failed as with Clang 8. May be cygwin issue, but cygwin's GCC version 7.4.0 compiles systemC that then passes all tests. I use cygwin 64 bit version 3.0.7

P.

[Philipp A Hartmann 237]

Can you run the failing test manually in a debugger and provide more details on the error?  The log looks truncated, as if there is a crash in the test.

[it3q 0]

It seems to be a crash to me as well.

$ gdb test.exe
GNU gdb (GDB) (Cygwin 8.1.1-1) 8.1.1
Copyright (C) 2018 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-pc-cygwin".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from test.exe...(no debugging symbols found)...done.
(gdb) run
Starting program: /cygdrive/c/install/systemc/systemc-2.3.3_clang/systemc-2.3.3/objdir/examples/sysc/2.1/reset_signal_is/test.exe
[New Thread 13360.0x2e78]
[New Thread 13360.0x2e6c]
[New Thread 13360.0x3720]
[New Thread 13360.0x328]
[New Thread 13360.0x1f68]
[New Thread 13360.0x2994]

        SystemC 2.3.3-Accellera --- Sep 25 2019 08:55:13
        Copyright (c) 1996-2018 by all Contributors,
        ALL RIGHTS RESERVED
0 s: reset
1 ns: 0
2 ns: 1
3 ns: 2
4 ns: 3
5 ns: 4
6 ns: 5
7 ns: 6
8 ns: 7
9 ns: 8
10 ns: 9
11 ns: 10
12 ns: 11
[Thread 13360.0x2e6c exited with code 67]
[Thread 13360.0x3720 exited with code 67]
[Thread 13360.0x328 exited with code 67]
[Thread 13360.0x2994 exited with code 67]
[Inferior 1 (process 13360) exited with code 0103]
(gdb)

Does this tell you something? Or should I put a breakpoint somewhere?

P.

[Philipp A Hartmann 237]

10 minutes ago, it3q said:

[Inferior 1 (process 13360) exited with code 0103]

Exit code 0x103 could indicate an "illegal instruction".  Can you try building SystemC with --disable-optimize?

As Roman mentioned earlier, Clang 8 is pretty new and SystemC has never been tested with Clang on Windows.

[it3q 0]

test.exe debugged above was built by clang 5.0.2. Having configured with --disable-optimize and compiled with clang 5 resulted that all tests passed.

In case of clang 8.0.1 test.exe (reset_signal_is test) exited with the same (0103) code. When I added --disable-optimize to configure 'make check' fails at the same test (reset_signal_is) but with different exit code: 05400.

What do you recommend? Is it worth to use clang 5 compiler with optimization disabled or better if I stay with gcc?

(My main motivation of using clang was to reduce compilation times of SystemC based simulations.)

P.

[Roman Popov 72]

Clang 5 works fine for me on Linux.  This may be a combination of Clang + Cygwin. 

Quote

(My main motivation of using clang was to reduce compilation times of SystemC based simulations.)

According to benchmarks https://www.phoronix.com/scan.php?page=article&item=gcc-clang-2019&num=4  compilation time difference for most projects is within 10%.