Print 2D matrix

main.c

#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>

void print_padding(int n);
void print_2d_matrix(int* m, int size);

const int N = 5;

int main(int argc, char const* argv[]) {
	int* my_matrix = malloc(N * N * sizeof(int));
	for (int i = 0; i < N; i++) {
		for (int j = 0; j < N; j++) {
			my_matrix[i * N + j] = j;
		}
	}

	print_2d_matrix(my_matrix, N);
	return 0;
}

void print_2d_matrix(int* m, int size) {
	printf("[\n");
	for (int i = 0; i < size; i++) {
		printf("  ");
		print_padding(i * 3);
		for (int j = i; j < size; j++) {
			printf("[%d]", m[i * N + j]);
		}
		printf("\n");
	}
	printf("]\n");
}

void print_padding(int n) {
	for (int i = 0; i < n; ++i) {
		putchar(' ');
	}
}

Makefile

CC?=gcc

DEFAULT_CFLAGS=-std=c11 -Og -Wall -Wextra -Wshadow

define GCC_FLAGS
-Wanalyzer-file-leak                           \
-Wanalyzer-malloc-leak                         \
-Wanalyzer-double-free                         \
-Wanalyzer-double-fclose                       \
-Wanalyzer-null-argument                       \
-Wanalyzer-use-after-free                      \
-Wanalyzer-write-to-const                      \
-Wanalyzer-free-of-non-heap                    \
-Wanalyzer-null-dereference                    \
-Wanalyzer-stale-setjmp-buffer                 \
-Wanalyzer-tainted-array-index                 \
-Wanalyzer-shift-count-negative                \
-Wanalyzer-shift-count-overflow                \
-Wanalyzer-possible-null-argument              \
-Wanalyzer-write-to-string-literal             \
-Wanalyzer-mismatching-deallocation            \
-Wanalyzer-possible-null-dereference           \
-Wanalyzer-exposure-through-output-file        \
-Wanalyzer-unsafe-call-within-signal-handler   \
-Wanalyzer-use-of-pointer-in-stale-stack-frame
endef

ifeq ($(CC), gcc)
	DEFAULT_CFLAGS+=$(GCC_FLAGS)
endif

all:
	@$(CC) -o main *.c $(DEFAULT_CFLAGS)