CCS not compiling certain lines in program

While writing a program for an MSP430G2432 in CCS Version: 5.3.0.00090 I get strange behaviour of the compiler: If I declare a local variable in one of the subroutines, sometimes the compiler totally ignores all lines that use this variable (even resulting in an "unused variable" warning during compilation)

When looking at the assembler, the compiler doesn't translate these lines (see example below)

When stepping with the debugger, it skips the "result=chargerLimit>0;" line and jumps to "chargerLimit=roomTempValue+chargerLimit>>6;" even tough chargerLimit is negative so 'result' should be 0.

If I try to display 'result' it says it doesn't exist... (unless I declare it o be volatile, but then it still does the 'if' statement wrong....)

I am running in Debug configuration, so the compiler is not doing any optimisation.

[Steps Needed to Recreate Problem:

the function below:

void tempAdjustChargerLimit(signed int roomTempValue)

{

        char result=0;

    relTemp = 3; // (:) getTemp()-eeprom[0];                 // relative temperature: about 1.15 LSB/deg (combined effect of MCU sensor and D9 zener on PCB)

    chargerLimit=((int)(64*CHARGELIMITGRAD)*relTemp);

    relTemp = 3; // (:) getTemp()-eeprom[0];                 // relative temperature: about 1.15 LSB/deg (combined effect of MCU sensor and D9 zener on PCB)

    result=chargerLimit>0;

    if (result)

        chargerLimit=roomTempValue+chargerLimit>>6;    // regular shift to divide back by 64 for positive number

    else

        chargerLimit=roomTempValue-(-chargerLimit)>>6;                              // r4everse sign if negative!

}

is compiled to:

516   {

      tempAdjustChargerLimit:

ec3e:   4C0F                MOV.W   R12,R15

518       relTemp = 3; // (:) getTemp()-eeprom[0];                   // relative temperature: about 1.15 LSB/deg (combined effect of MCU sensor and D9 zener on PCB)

ec40:   40B2 0003 0218      MOV.W   #0x0003,&relTemp

519       chargerLimit=((int)(64*CHARGELIMITGRAD)*relTemp);

ec46:   421C 0218           MOV.W   &relTemp,R12

ec4a:   403D FF77           MOV.W   #0xff77,R13

ec4e:   12B0 EE0A           CALL    #__mpyi

ec52:   4C82 0216           MOV.W   R12,&chargerLimit

520       relTemp = 3; // (:) getTemp()-eeprom[0];                   // relative temperature: about 1.15 LSB/deg (combined effect of MCU sensor and D9 zener on PCB)

ec56:   40B2 0003 0218      MOV.W   #0x0003,&relTemp

523            chargerLimit=roomTempValue+chargerLimit>>6;    // regular shift to divide back by 64 for positive number

ec5c:   5F0C                ADD.W   R15,R12

ec5e:   12B0 EB84           CALL    #I_ASR_6

ec62:   4C82 0216           MOV.W   R12,&chargerLimit

526   }

ec66:   4130                RET