Trying to set FD_CLOEXEC on every fd is a lost cause, just use

closefrom() before exec.

1 files changed, 2 insertions, 0 deletions

diff --git a/tmux.c b/tmux.c
index 842fd1b9..fe1fd394 100644
--- a/tmux.c
+++ b/tmux.c
@@ -223,6 +223,8 @@ shell_exec(const char *shell, const char *shellcmd)
 		xasprintf(&argv0, "%s", shellname);
 	setenv("SHELL", shell, 1);
 
+	closefrom(STDERR_FILENO + 1);
+
 	execl(shell, argv0, "-c", shellcmd, (char *) NULL);
 	fatal("execl failed");
 }