X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Funistd%2Fdup3.c;h=40798bdeed12ea6984198f859e700395b01042f5;hb=3281047cfca0f3848d0613e3c0d19d41b0531564;hp=1e7dc3e73a6fd7b10f17c7a8cc6dd0396f3d0d4d;hpb=c99b7daafdbf1e2415bf408e67ca7813e7ddeedf;p=musl

diff --git a/src/unistd/dup3.c b/src/unistd/dup3.c
index 1e7dc3e7..40798bde 100644
--- a/src/unistd/dup3.c
+++ b/src/unistd/dup3.c
@@ -15,7 +15,8 @@ int __dup3(int old, int new, int flags)
 		if (flags & ~O_CLOEXEC) return __syscall_ret(-EINVAL);
 	}
 	while ((r=__syscall(SYS_dup2, old, new))==-EBUSY);
-	if (flags & O_CLOEXEC) __syscall(SYS_fcntl, new, F_SETFD, FD_CLOEXEC);
+	if (r >= 0 && (flags & O_CLOEXEC))
+		__syscall(SYS_fcntl, new, F_SETFD, FD_CLOEXEC);
 #else
 	while ((r=__syscall(SYS_dup3, old, new, flags))==-EBUSY);
 #endif