1 files changed, 1 insertions, 0 deletions
diff --git a/subst.h b/subst.h
index cb47cc9a..c7e948f1 100644
--- a/subst.h
+++ b/subst.h
@@ -355,6 +355,7 @@ extern int inherit_errexit;
 
 extern pid_t last_command_subst_pid;
 extern int last_command_subst_status;
+extern int executing_funsub;
 
 /* Evaluates to 1 if C is a character in $IFS. */
 #define isifs(c)	(ifs_cmap[(unsigned char)(c)] != 0)