[BUG] Compiler errors with CCS compiler

[SvenP91]

Describe the bug
I am working with the ARM-CGT Compiler from TI in version v20.2.7.LTS. It seems to be very picky with the rules and has thrown these errors while compiling. Here are my suggestions:

• source\FreeRTOS_DNS_Parser.c, line 278:
  error 551-D: variable "xDNSHookReturn" is used before its value is set
  --> 265: BaseType_t xDNSHookReturn = 0U;

• source\FreeRTOS_IPv6.c, line 102:
  error 193-D: type qualifier is meaningless on cast type
  --> 102: const uint8_t * const pucEthernetBuffer = ( const uint8_t *) pvEthernetBuffer;

• same in:

  • source\FreeRTOS_IPv6.c, line 106
  • source/FreeRTOS_IPv4.c, line 85

• source\FreeRTOS_RA.c, line 332:
  error 552-D: variable "ulMTU" was set but never used
  --> guard by ifdef ipconfigHAS_PRINTF

Target

• Development board: TMS570LC435
• Instruction Set Architecture: 16/32 Bit RISC
• IDE and version: VS Code
• Toolchain and version: ARM-CGT Compiler v20.2.7.LTS