Compiler warning in V11.2.0

Kernel
1

I just updated to V11.2.0 and got this warning:

   [C]            port.c
/Users/simon/Developer/FreeRTOS-Ada/FreeRTOS-Kernel/portable/GCC/RISC-V/port.c: In function 'vPortSetupTimerInterrupt':
/Users/simon/Developer/FreeRTOS-Ada/FreeRTOS-Kernel/portable/GCC/RISC-V/port.c:139:43: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
  139 |         pullMachineTimerCompareRegister = ( volatile uint64_t * ) ( ullMachineTimerCompareRegisterBase + ( ulHartId * sizeof( uint64_t ) ) );
      |                                           ^

This is with GCC 14.2.0 cross-compiling on aarch64-apple-darwin to -march=rv32imac_zicsr_zifencei_zba_zbb_zbs_zbkb -mabi=ilp32.

Looking at the code I don’t see quite what the compiler is complaining about, unless it’s the ulHartId. Perhaps it’s because pointers on this architecture are 32 bits, so uint64_t const ullMachineTimerCompareRegisterBase at :93 should in fact be uint32_t const ulMachineTimerCompareRegisterBase? That certainly silences the warning.

This is the opposite of issue #189. Are there techniques to check for 64- vs 32-bits?

2

We recently merged the following PR to address this - Use UBaseType_t for ullMachineTimerCompareRegisterBase by aggarg · Pull Request #1258 · FreeRTOS/FreeRTOS-Kernel · GitHub. Can you try this and see if this addresses the warning that you are getting?

3

Thanks: I no longer get the warning.