A small C program for testing the current memory limit.

memory_test.c

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

int main(int argc, const char **argv) {
	size_t chunk = 0b1 << 10;
	size_t interval = 0b1 << 15;
	size_t i = 0;
	char *ptr = malloc(chunk * (i + 1));
	while (ptr != NULL) {
		memset(ptr + chunk * i, 0, chunk);
		if (i % interval == 0) {
			printf("Current allocated: %zu\n", chunk * i);
		}
		i++;
		ptr = realloc(ptr, chunk * (i + 1));
	}
	printf("Max memory allocated: %zu\n", chunk * i);
	return 0;
}