Android pthread TLS repro

main.c

#include <stdio.h>
#include <pthread.h>
#include <malloc.h> 
pthread_key_t key; 
extern int getX(); 
int main() {    
    key = pthread_key_create(&key, NULL);  
    int *x = (int *)malloc(sizeof(int));   
    pthread_setspecific(key, x);  
    
    *x = 1234;         
    printf("%d\n", getX());
}

so.c

#include <pthread.h>
#include <stdio.h> 
extern pthread_key_t key; 
int getX() {
    int *x = (int *)pthread_getspecific(key); 
    if (x == NULL) {      
        printf("ERROR\n");     
        return 0;     
    } else {     
        printf("OK");    
        return *x;  
    }
}