OpenEuphoria

Euphoria Ticket #908: translator segfault with routine_id

• Reported by cargoan Dec 16, 2014
• 2 comments

-- file1.e
public sequence s  = {"func1", "func2"}  
public sequence s1 = s[1]  
public sequence s2 = s[2]  
  
-- file2.e  
public function func1()  
    return {1,2,3}  
end function  
  
public function func2()  
    return 25  
end function  
  
-- file.ex  
include file1.e  as f1 
include file2.e  
  
puts(1, s[1] & ", " & s[2] & 10)  
puts(1, s1 & 10)  
puts(1, s2 & 10)  
  
--atom x = routine_id(s1)   -- translator (segfault), eui Ok  
atom x = routine_id(s[1])   -- translate, compile and run Ok  
  
? call_func(x, {})  
x = routine_id(s[2])  
? call_func(x, {})  
  
sequence ss = "func1" 
x = routine_id(ss)          -- Ok 
? call_func(x, {}) 
 
ss = s1 
x = routine_id(ss)          -- Ok 
? call_func(x, {}) 
 
x = routine_id(f1:s2)       -- namespace qualifier Ok  
? call_func(x, {}) 
 
 
---------------------------- 

Details

1. Comment by cargoan Dec 17, 2014

generated core output (gdb):

[$]: LANG=C coredumpctl gdb
           PID: 8247 (euc) 
           UID: 1000 (cargoan) 
           GID: 100 (users) 
        Signal: 11 (SEGV) 
     Timestamp: Wed 2014-12-17 09:22:15 CET (7min ago) 
  Command Line: euc file.ex 
    Executable: /home/cargoan/euphoria-LINUX-4.1.0/bin/euc 
 Control Group: /user.slice/user-1000.slice/session-1.scope 
          Unit: session-1.scope 
         Slice: user-1000.slice 
       Session: 1 
     Owner UID: 1000 (cargoan) 
       Boot ID: ff0b652b2c674118a95152be82752045 
    Machine ID: 152d57909c7bbd9ccefc769e00000770 
      Hostname: HP-s3733es 
      Coredump: /var/lib/systemd/coredump/core.euc.1000.ff0b652b2c674118a95152be82752045.8247.1418804535000000.lz4 
       Message: Process 8247 (euc) of user 1000 dumped core. 
 
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Reading symbols from /home/cargoan/euphoria-LINUX-4.1.0/bin/euc...done. 
[New LWP 8247] 
 
warning: Could not load shared library symbols for linux-vdso.so.1. 
Do you need "set solib-search-path" or "set sysroot"? 
[Thread debugging using libthread_db enabled] 
Using host libthread_db library "/usr/lib/libthread_db.so.1". 
Core was generated by 'euc file.ex'. 
Program terminated with signal SIGSEGV, Segmentation fault. 
#0  0x0000000000548ae2 in _54MarkTargets () 
 
(gdb) run file.ex 
Starting program: /home/cargoan/euphoria-LINUX-4.1.0/bin/euc file.ex 
warning: Could not load shared library symbols for linux-vdso.so.1. 
Do you need "set solib-search-path" or "set sysroot"? 
[Thread debugging using libthread_db enabled] 
Using host libthread_db library "/usr/lib/libthread_db.so.1". 
Build directory: build-259696/ 
 
Program received signal SIGSEGV, Segmentation fault. 
0x0000000000548ae2 in _54MarkTargets () 
 

2. Comment by mattlewis Dec 17, 2014

I can reproduce this. Running the interpreted translator, I get:

symtab.e:653 in function MarkTargets()  
subscript value -9 is out of bounds, reading from a sequence of length 178 - in subscript #1 of 'SymTab' 
... called from emit.e:1282 in procedure emit_op()   
... called from parser.e:1234 in procedure Function_call()   
... called from parser.e:1348 in procedure Factor()   
... called from parser.e:1374 in procedure UFactor()   
... called from parser.e:1383 in function Term()   
... called from parser.e:1398 in function aexpr()   
... called from parser.e:1412 in function cexpr()   
... called from parser.e:1435 in function rexpr()   
... called from parser.e:1474 in procedure Expr()   
... called from parser.e:1697 in procedure Assignment()   
... called from parser.e:3747 in function Global_declaration()   
... called from parser.e:4826 in procedure real_parser()   
... called from parser.e:5035 in procedure parser()   
... called from main.e:201 in procedure main()   
... called from main.e:228  
--> See ex.err 

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