fix false ownership of stdio FILEs due to tid reuse

[musl] / src / stdio / funlockfile.c

#include "stdio_impl.h"
#include "pthread_impl.h"

void __unlist_locked_file(FILE *);

void funlockfile(FILE *f)
{
        if (f->lockcount == 1) {
                __unlist_locked_file(f);
                f->lockcount = 0;
                __unlockfile(f);
        } else {
                f->lockcount--;
        }
}