It is crashing earlier than calling slicearray, actually in the semantic 
pass after the parse.

For Steven!!
(gdb) where
#0  0x00007ffff7b1e9f9 in create_array_arg_type 
(csound=csound@entry=0x6044a0,
     arrayVar=0x80e220) at 
/home/jpff/csound6/Engine/csound_orc_semantics.c:188
#1  0x00007ffff7b217e5 in get_arg_type2 (csound=csound@entry=0x6044a0,
     tree=0x7f5580, typeTable=typeTable@entry=0x786860)
     at /home/jpff/csound6/Engine/csound_orc_semantics.c:554
#2  0x00007ffff7b262bc in collapse_last_assigment (typeTable=0x786860,
     anchor=0x80df70, csound=0x6044a0)
     at /home/jpff/csound6/Engine/csound_orc_expressions.c:893
#3  expand_statement (csound=csound@entry=0x6044a0,
     current=current@entry=0x7f5850, typeTable=typeTable@entry=0x786860)
     at /home/jpff/csound6/Engine/csound_orc_expressions.c:1074
#4  0x00007ffff7b238a4 in verify_tree (csound=csound@entry=0x6044a0,
     root=, typeTable=typeTable@entry=0x786860)
     at /home/jpff/csound6/Engine/csound_orc_semantics.c:1893
#5  0x00007ffff7b23ad4 in verify_tree (csound=csound@entry=0x6044a0,
     root=, typeTable=typeTable@entry=0x786860)
     at /home/jpff/csound6/Engine/csound_orc_semantics.c:1770
#6  0x00007ffff7b2d078 in csoundParseOrc (csound=csound@entry=0x6044a0,
     str=str@entry=0x0) at /home/jpff/csound6/Engine/new_orc_parser.c:258
#7  0x00007ffff7b2cc4b in csoundCompileOrcInternal (
     csound=csound@entry=0x6044a0, str=str@entry=0x0, async=async@entry=0)
     at /home/jpff/csound6/Engine/csound_orc_compile.c:1837
#8  0x00007ffff7a7015d in csoundCompileArgs (csound=csound@entry=0x6044a0,
     argc=2, argc@entry=3, argv=argv@entry=0x7fffffffdef8)
     at /home/jpff/csound6/Top/main.c:252
#9  0x00007ffff7a70f99 in csoundCompile (csound=csound@entry=0x6044a0,
     argc=argc@entry=3, argv=argv@entry=0x7fffffffdef8)
     at /home/jpff/csound6/Top/main.c:497
#10 0x0000000000401477 in main (argc=3, argv=0x7fffffffdef8)
     at /home/jpff/csound6/Frontends/csound/csound_main.c:324
(gdb) list
183
184         int i, len = arrayVar->dimensions + 3;
185         char* retVal = csound->Malloc(csound, len);
186         retVal[len - 1] = '\0';
187         retVal[len - 2] = ']';
188         retVal[len - 3] = *arrayVar->subType->varTypeName;
189         for (i = len - 4; i >= 0; i--) {
190             retVal[i] = '[';
191         }
192         return retVal;
(gdb) print *arrayVar
$1 = {varName = 0x80e160 "#.2[]",
   varType = 0x7ffff7db5860 , memBlockSize = 40,
   memBlockIndex = 19, dimensions = 1, refCount = 0, next = 0x0, subType = 
0x0,
   updateMemBlockSize = 0x0, initializeVariableMemory =
     0x7ffff795d3c0 , memBlock = 0x0}

Note subtype is null

On Sat, 7 Apr 2018, Dave Seidel wrote:

> Hi all,
> I am having an issue with slicearry, and have boiled it down to the following
> code. Unless I comment out the call to slicearray, the program terminates with
> "csound command: Segmentation fault", and never even prints the usual message
> about OSC initialization. Am I doing something wrong?
> 
> Thanks,
> Dave
> 
> 
> 
> -m7
> 
> 
> 
> sr = 44100
> ksmps = 32
> nchnls = 2
> 0dbfs = 1
> 
> giosc OSCinit 7110
> 
> instr 1
> kArr[] init 25
> kSlice[] init 5
> kk = OSClisten(giosc, "/foo", "A", kArr)
> if (kk == 0) then
> goto DONE
> endif
> kSlice = slicearray(kArr, 0, 4)
> 
> DONE:
> endin
> 
> 
> 
> 
> 
> 
> Csound mailing list Csound@listserv.heanet.ie
> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to
> https://github.com/csound/csound/issues Discussions of bugs and features can
> be posted here
>

Csound mailing list
Csound@listserv.heanet.ie
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Send bugs reports to
        https://github.com/csound/csound/issues
Discussions of bugs and features can be posted here

More investigation; if you replace the functional form by the old style
kSlice slicearray kArr, 0, 4
it does not crash.
A problem in the xpansion of assignments

==John



On Sat, 7 Apr 2018, Dave Seidel wrote:

> Hi all,
> I am having an issue with slicearry, and have boiled it down to the following
> code. Unless I comment out the call to slicearray, the program terminates with
> "csound command: Segmentation fault", and never even prints the usual message
> about OSC initialization. Am I doing something wrong?
> 
> Thanks,
> Dave
> 
> 
> 
> -m7
> 
> 
> 
> sr = 44100
> ksmps = 32
> nchnls = 2
> 0dbfs = 1
> 
> giosc OSCinit 7110
> 
> instr 1
> kArr[] init 25
> kSlice[] init 5
> kk = OSClisten(giosc, "/foo", "A", kArr)
> if (kk == 0) then
> goto DONE
> endif
> kSlice = slicearray(kArr, 0, 4)
> 
> DONE:
> endin
> 
> 
> 
> 
> 
> 
> Csound mailing list Csound@listserv.heanet.ie
> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to
> https://github.com/csound/csound/issues Discussions of bugs and features can
> be posted here
>

Csound mailing list
Csound@listserv.heanet.ie
https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND
Send bugs reports to
        https://github.com/csound/csound/issues
Discussions of bugs and features can be posted here