OpenEuphoria

Re: SWITCH question

• Posted by irv Jan 05, 2018
• 2220 views

Could it be that we are looking in the wrong place for the cause of the sig 11 crash? Note that assigning one constant to another fails, while assigning the equivalent literal value to that same constant succeeds:

 
constant expr = cos(0) 
? expr 
constant val = 1 -- works 
? val 
     
switch expr do  
    case val then  
        puts(1, "\n result is first stack \n" )  
    case else  
        puts(1, "\n result is something else \n")  
end switch  
  

1
1

result is first stack

constant expr = cos(0) 
? expr 
constant val = expr -- fails 
? val 
     
switch expr do  
    case val then  
        puts(1, "\n result is first stack \n" )  
    case else  
        puts(1, "\n result is something else \n")  
end switch  

1
1

/home/irv/stk.ex:7
A machine-level exception occurred during execution of this statement (signal 11)

constant expr = cos(0) 
? expr 
constant val = cos(0) -- fails (it's the same, but different!) 
? val 
     
switch expr do  
    case val then  
        puts(1, "\n result is first stack \n" )  
    case else  
        puts(1, "\n result is something else \n")  
end switch  
  

Also fails, same error.