https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=d0e0a59e7880739abe47bf217ee958c6233c6ef7
commit d0e0a59e7880739abe47bf217ee958c6233c6ef7 Author: Corinna Vinschen <[email protected]> Date: Wed Feb 10 10:39:03 2021 +0100 Cygwin: check path_conv_handle for NULL before trying to dup it path_conv_handle::dup calls DuplicateHandle unconditionally, but we only have a handle in some cases. Check handle for being non-NULL before calling DuplicateHandle. Signed-off-by: Corinna Vinschen <[email protected]> Diff: --- winsup/cygwin/path.h | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/winsup/cygwin/path.h b/winsup/cygwin/path.h index 33e7fdf6a..fe4dd5478 100644 --- a/winsup/cygwin/path.h +++ b/winsup/cygwin/path.h @@ -105,9 +105,10 @@ public: } inline void dup (const path_conv_handle &pch) { - if (!DuplicateHandle (GetCurrentProcess (), pch.handle (), - GetCurrentProcess (), &hdl, - 0, TRUE, DUPLICATE_SAME_ACCESS)) + if (pch.handle () + && !DuplicateHandle (GetCurrentProcess (), pch.handle (), + GetCurrentProcess (), &hdl, + 0, TRUE, DUPLICATE_SAME_ACCESS)) hdl = NULL; } inline HANDLE handle () const { return hdl; }
