What's New in C166 Version 7.52

C166 Version 7.52 Release

Release Date: 15 April 2013

• [C166 Compiler]
  • Corrected: C166 creates wrong code with OT(8). Example:

    #pragma MODV2 HLARGE OPTIMIZE (8,SPEED)
    
    char ASCII_Data [12];
    
    
     void foo(char typ) {
      signed short i;
    
      i = 0;
      ASCII_Data [i++]  = '#';
      ASCII_Data [i++]  = DataType;
      ASCII_Data [i++]  = '*';                  // This may create wrong code that overwrites 'i'
      ::::::::::::
    
    

  • Corrected: C166 creates word access where byte access would be required. Example:

    #pragma HLARGE MODV2 FIX167 FIXPEC PACK (1)
    
     struct a  {
       unsigned char b0;
       unsigned int  i;
       unsigned char b1;
       unsigned char b2;
       unsigned char b3;
     } m1, m2, m3[5];
    
     void foo(void) {
    
      m3[getindex()].i = m1.b1 = m2.b3;         // This line causes a hardware trap because of a word access to an odd address
    
     }
    

  • Removed unjustified compiler warnings. Example:

    warning C192: '=': value truncated          // Happens when assigning "0" or "1" to a bitfield member.
    

• [µVision4]
  • This C166 release comes with µVision V4.70.80.0.
  • Refer to Revision History for a complete list.