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From a80c21e8b7ff113878ecece1db730fd40bc0ff55 Mon Sep 17 00:00:00 2001
From: Chet Ramey <chet.ramey@case.edu>
Date: Wed, 26 Nov 2025 12:50:54 -0500
Subject: Bash-5.3 patch 7: fix issue where nofork command substitutions can
affect redirections in the calling shell
--- a/patchlevel.h
+++ b/patchlevel.h
@@ -25,6 +25,6 @@
regexp `^#define[ ]*PATCHLEVEL', since that's what support/mkversion.sh
looks for to find the patch level (for the sccs version string). */
-#define PATCHLEVEL 6
+#define PATCHLEVEL 7
#endif /* _PATCHLEVEL_H_ */
--- a/subst.c
+++ b/subst.c
@@ -206,6 +206,8 @@ extern int wordexp_only;
extern int singlequote_translations;
extern int extended_quote;
+extern REDIRECT *exec_redirection_undo_list, *redirection_undo_list;
+
#if !defined (HAVE_WCSDUP) && defined (HANDLE_MULTIBYTE)
extern wchar_t *wcsdup (const wchar_t *);
#endif
@@ -7000,6 +7002,11 @@ function_substitute (char *string, int q
add_unwind_protect (uw_restore_pipestatus_array, psa);
}
#endif
+
+ unwind_protect_pointer (redirection_undo_list);
+ redirection_undo_list = NULL;
+ unwind_protect_pointer (exec_redirection_undo_list);
+ exec_redirection_undo_list = NULL;
subst_assign_varlist = 0;
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