Another sequence point error

#include <stdio.h>

int main() {

  int b[] = { 33,44,55,66,77,88, };
  int *a = b;

  for (int i = 0; i < 5; ++i) {
    printf("value: %d, address: %p\n", *a, a++);
  }

  return 0;
}

$ gcc-9 -Wall -Werror -o sqerror1 sqerror1.c
sqerror1.c: In function 'main':
sqerror1.c:10:45: error: operation on 'a' may be undefined [-Werror=sequence-point]
   10 |     printf("value: %d, address: %p\n", *a, a++);
      |                                            ~^~
cc1: all warnings being treated as errors
$ clang -Wall -Werror -o sqerror1 sqerror1.c
sqerror1.c:10:45: error: unsequenced modification and access to 'a' [-Werror,-Wunsequenced]
    printf("value: %d, address: %p\n", *a, a++);
                                        ~   ^
1 error generated.

# and compiling without -Werror to allow compilation to succeed

$ clang -Wall -o sqerror1 sqerror1.c
sqerror1.c:10:45: warning: unsequenced modification and access to 'a' [-Wunsequenced]
    printf("value: %d, address: %p\n", *a, a++);
                                        ~   ^
1 warning generated.
$ ./sqerror1
value: 33, address: 0x7ffeedaa9480
value: 44, address: 0x7ffeedaa9484
value: 55, address: 0x7ffeedaa9488
value: 66, address: 0x7ffeedaa948c
value: 77, address: 0x7ffeedaa9490
$ gcc-9 -Wall -o sqerror1 sqerror1.c
sqerror1.c: In function 'main':
sqerror1.c:10:45: warning: operation on 'a' may be undefined [-Wsequence-point]
   10 |     printf("value: %d, address: %p\n", *a, a++);
      |                                            ~^~
$ ./sqerror1
value: 44, address: 0x7ffeeb3e3470
value: 55, address: 0x7ffeeb3e3474
value: 66, address: 0x7ffeeb3e3478
value: 77, address: 0x7ffeeb3e347c
value: 88, address: 0x7ffeeb3e3480
Kielder:tmp alansampson$