https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=aa73e115242612bf8b5f8670c0c7d398693d1d84
commit aa73e115242612bf8b5f8670c0c7d398693d1d84 Author: Takashi Yano <[email protected]> Date: Fri Feb 2 13:59:19 2024 +0900 Cygwin: console: Fix exit code for non-cygwin process. If non-cygwin process is executed in console, the exit code is not set correctly. This is because the stub process for non-cygwin app crashes in fhandler_console::set_disable_master_thread() due to NULL pointer dereference. This bug was introduced by the commit: 3721a756b0d8 ("Cygwin: console: Make the console accessible from other terminals."), that the pointer cons is accessed before fixing when it is NULL. This patch fixes the issue. Fixes: 3721a756b0d8 ("Cygwin: console: Make the console accessible from other terminals.") Reported-by: Johannes Schindelin <[email protected]> Signed-off-by: Takashi Yano <[email protected]> Diff: --- winsup/cygwin/fhandler/console.cc | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/winsup/cygwin/fhandler/console.cc b/winsup/cygwin/fhandler/console.cc index b924a6bf3..6a42b4949 100644 --- a/winsup/cygwin/fhandler/console.cc +++ b/winsup/cygwin/fhandler/console.cc @@ -4537,9 +4537,6 @@ fhandler_console::need_console_handler () void fhandler_console::set_disable_master_thread (bool x, fhandler_console *cons) { - const _minor_t unit = cons->get_minor (); - if (con.disable_master_thread == x) - return; if (cons == NULL) { if (cygheap->ctty && cygheap->ctty->get_major () == DEV_CONS_MAJOR) @@ -4547,6 +4544,9 @@ fhandler_console::set_disable_master_thread (bool x, fhandler_console *cons) else return; } + const _minor_t unit = cons->get_minor (); + if (con.disable_master_thread == x) + return; cons->acquire_input_mutex (mutex_timeout); con.disable_master_thread = x; cons->release_input_mutex ();
