fix printf rounding with %g for some corner case midpoints

[musl] / src / unistd / fchdir.c

diff --git a/src/unistd/fchdir.c b/src/unistd/fchdir.c
index 9fbc815..72c3915 100644 (file)
--- a/src/unistd/fchdir.c
+++ b/src/unistd/fchdir.c
@@ -1,5 +1,6 @@
 #include <unistd.h>
 #include <errno.h>
+#include <fcntl.h>
 #include "syscall.h"
 
 void __procfdname(char *, unsigned);
@@ -7,7 +8,8 @@ void __procfdname(char *, unsigned);
 int fchdir(int fd)
 {
        int ret = __syscall(SYS_fchdir, fd);
-       if (ret != -EBADF || fd < 0) return __syscall_ret(ret);
+       if (ret != -EBADF || __syscall(SYS_fcntl, fd, F_GETFD) < 0)
+               return __syscall_ret(ret);
 
        char buf[15+3*sizeof(int)];
        __procfdname(buf, fd);