void _main(){FILE * data;_union_type my_union;data=fopen("BadSource_fopen.txt", "w+");fclose(data);my_union.a=data;{FILE * data=my_union.b;fclose(data);}}
static void main(){FILE * data;_union_type my_union;data=fopen("BadSource_fopen.txt", "w+");fclose(data);my_union.a=data;{FILE * data=my_union.b;}}