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* [newlib-cygwin] Cygwin: pty: Fix 'Bad address' error when running 'cmd.exe /c dir'
@ 2022-10-22  5:35 Takashi Yano
  0 siblings, 0 replies; only message in thread
From: Takashi Yano @ 2022-10-22  5:35 UTC (permalink / raw)
  To: cygwin-cvs;h=7589034cc3151bfac8cc3d3af5e91402a78e160b

commit 7589034cc3151bfac8cc3d3af5e91402a78e160b
Author: Takashi Yano <>
Date:   Sat Oct 22 14:05:40 2022 +0900

    Cygwin: pty: Fix 'Bad address' error when running 'cmd.exe /c dir'
    - If the command executed is 'cmd.exe /c [...]', runpath in
      will be NULL. In this case, is_console_app(runpath) check causes
      access violation. This case also the command executed is obviously
      console app., therefore, treat it as console app to fix this issue.

 winsup/cygwin/ | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/winsup/cygwin/ b/winsup/cygwin/
index 5aa52ab1e..4fc842a2b 100644
--- a/winsup/cygwin/
+++ b/winsup/cygwin/
@@ -215,6 +215,8 @@ handle (int fd, bool writing)
 static bool
 is_console_app (WCHAR *filename)
+  if (filename == NULL)
+    return true; /* The command executed is or cmd.exe. */
   HANDLE h;
   const int id_offset = 92;
   h = CreateFileW (filename, GENERIC_READ, FILE_SHARE_READ,

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