'pitchamd' opcode causes segmentation fault (macOS)

[pierre-dlsi]

The 'pitchamd' opcode causes a segmentation fault when the number of samples in a- variables is too high AND the '-n' command line option is used

Tested on 6.12, 6.16 on macOS Mojave 10.14.6

The following code fails:

 <CsoundSynthesizer>
 <CsOptions>
 -n ; works fine with '-o dac'
 </CsOptions>
 <CsInstruments>
 
 sr = 44100 
 kr = 10    ; low kr --> high a- array size. It works when kr >= 14
 
 instr f0
   SFich   = p4  
   aSound  soundin  SFich
   kFrec, kAmp  pitchamdf  aSound, 100, 500  
   out     aSound         ; monitor
 endin
 
 </CsInstruments>
 <CsScore>
 
 ;  inst onset   dur   fich    
 ;   p1   p2     p3       p4  
 ;-----------------------------------------
 i "f0"   0    1  "sound.wav" 
 e
 </CsScore>
 </CsoundSynthesizer>