--gc:orc when is it usable (huge compile times)

[HJarausch]

Thanks Yardanico. Unfortunately I need some more help.

After 
    
    
    git pull
    git bisect start
    git bisect good v1.4.8
    git bisect bad devel
    nim c koch.nim
    ./koch temp
    
    
    Run

gives
    
    
    /home/jarausch/Nim/Compiler/Nim/compiler/commands.nim(39, 11) 
template/generic instantiation of `bootSwitch` from here
    /home/jarausch/Nim/Compiler/Nim/compiler/commands.nim(40, 33) Error: 
undeclared identifier: 'nativeStackTraceSupported'
    candidates (edit distance, scope distance); see '--spellSuggest':
     (12, 4): 'getStackTraceEntries' [proc declared in 
/usr/lib/nim/system/excpt.nim(524, 6)]
     (12, 4): 'getStackTraceEntries' [proc declared in 
/usr/lib/nim/system/excpt.nim(529, 6)]
    FAILURE
    
    
    Run

What am I missing? Thanks, Helmut