project generated for AB32VG1 board full of errors(not compiling)

Hello. Project generated for AB32VG1 board does not compile because of errors. No custom code added, just a clean generated project with default "PE.1" Blink example.

RT-Thread Studio Version: 2.2.6 Build id: 202211231640
RT-Thread 4.1.1 (intalled using SDK Manager)
Risc-V GCC Toolchain (intalled using SDK Manager, path in Project->Properties->MCU->Toolchain point to correct place)
Board: Prougen AB32VG1

Console Output in IDE:

make -j2 all2 
riscv64-unknown-elf-gcc "../rt-thread/components/libc/compilers/common/cstdlib.c"
riscv64-unknown-elf-gcc "../libraries/hal_drivers/drv_common.c"
../rt-thread/components/libc/compilers/common/cstdlib.c: In function 'ltoa':
../rt-thread/components/libc/compilers/common/cstdlib.c:64:19: error: 'NULL' undeclared (first use in this function)
   64 |     if (string == NULL)
      |                   ^~~~
../rt-thread/components/libc/compilers/common/cstdlib.c:18:1: note: 'NULL' is defined in header '<stddef.h>'; did you forget to '#include <stddef.h>'?
   17 | #include <rtdbg.h>
  +++ |+#include <stddef.h>
   18 | 
../rt-thread/components/libc/compilers/common/cstdlib.c:64:19: note: each undeclared identifier is reported only once for each function it appears in
   64 |     if (string == NULL)
      |                   ^~~~
../rt-thread/components/libc/compilers/common/cstdlib.c: In function 'ultoa':
../rt-thread/components/libc/compilers/common/cstdlib.c:119:19: error: 'NULL' undeclared (first use in this function)
  119 |     if (string == NULL)
      |                   ^~~~
../rt-thread/components/libc/compilers/common/cstdlib.c:119:19: note: 'NULL' is defined in header '<stddef.h>'; did you forget to '#include <stddef.h>'?
make: *** [rt-thread/components/libc/compilers/common/subdir.mk:33: rt-thread/components/libc/compilers/common/cstdlib.o] Error 1
make: *** Waiting for unfinished jobs....
../libraries/hal_drivers/drv_common.c:19:12: error: expected declaration specifiers or '...' before string constant
   19 | RT_SECTION(".irq.uart")
      |            ^~~~~~~~~~~
../libraries/hal_drivers/drv_common.c:26:12: error: expected declaration specifiers or '...' before string constant
   26 | RT_SECTION(".irq.uart")
      |            ^~~~~~~~~~~
../libraries/hal_drivers/drv_common.c:33:12: error: expected declaration specifiers or '...' before string constant
   33 | RT_SECTION(".irq.uart")
      |            ^~~~~~~~~~~
make: *** [libraries/hal_drivers/subdir.mk:24: libraries/hal_drivers/drv_common.o] Error 1
"make -j2 all2" terminated with exit code 2. Build might be incomplete.

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