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Diffstat (limited to 'winsup/cygwin/syscalls.cc')
| -rw-r--r-- | winsup/cygwin/syscalls.cc | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/winsup/cygwin/syscalls.cc b/winsup/cygwin/syscalls.cc index 43ecf3a0f..fe89f8493 100644 --- a/winsup/cygwin/syscalls.cc +++ b/winsup/cygwin/syscalls.cc @@ -142,7 +142,7 @@ extern "C" int dup2 (int oldfd, int newfd) { int res; - if (newfd >= OPEN_MAX_MAX) + if (newfd >= OPEN_MAX_MAX || newfd < 0) { set_errno (EBADF); res = -1; |