Reading an array of strings from a Waveform record

[Simon Hoyle <Simon.Hoyle@csiro.au>]

Hi,

I'm attempting to use an asub  to read an array of
strings from a waveform record with Epics 3.14.11
The strings are written to the waveform with a 'caput -a'  e.g.

caput -a test:evt:WF6:ETA 4 "alas" "poor" "yorik" "Iknewhimhoratio"

Old : test:evt:WF6:ETA 10
New : test:evt:WF6:ETA 10 alas poor yorik Iknewhimhoratio

NORD and VAL of the waveform record are linked to INPB and
INPC of the asub, respectively.
The forward link of the waveform triggers the asub to process
and the subroutine tries to read an array of strings like so ...

 void loadETA(aSubRecord * asub)
 {
   int etaLen = *(short*)(asub->b);
   char** etaIn = (char**)(asub->c);

   for (int i = 0; i < etaLen; ++i)
       printf("\t%s\n", *(etaIn++));     
 }

The IOC terminates with a SEGV when the subroutine runs.
A call to    printf("%s\n", (char*)(asub->c));
prints the first string in the array, whereas I would have expected
asub->c to hold the address of the first string in the array.

I've been able to read an array of doubles from the waveform
with a subroutine similar to the above, but I'm stuck with the
strings.  Perhaps I'm doing something obviously wrong ?

Any help greatly appreciated.

Thanks-In-Advance,

--
Regards, Simon.

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