From: Chet Ramey <chet.ramey@case.edu>
Date: Wed, 3 Jun 2026 14:21:45 +0000 (-0400)
Subject: Bash-5.3 patch 12: fix subshells inappropriately running the EXIT trap if they receiv... 
X-Git-Url: http://git.ipfire.org/gitweb/index.cgi?a=commitdiff_plain;h=refs%2Fheads%2Fmaster;p=thirdparty%2Fbash.git

Bash-5.3 patch 12: fix subshells inappropriately running the EXIT trap if they receive a fatal signal before resetting traps
---

diff --git a/execute_cmd.c b/execute_cmd.c
index 070f5119..6a22395e 100644
--- a/execute_cmd.c
+++ b/execute_cmd.c
@@ -1643,13 +1643,13 @@ execute_in_subshell (COMMAND *command, int asynchronous, int pipe_in, int pipe_o
 
   if (user_subshell)
     {
-      subshell_environment = SUBSHELL_PAREN;	/* XXX */
+      subshell_environment = SUBSHELL_PAREN|SUBSHELL_IGNTRAP;	/* XXX */
       if (asynchronous)
 	subshell_environment |= SUBSHELL_ASYNC;
     }
   else
     {
-      subshell_environment = 0;			/* XXX */
+      subshell_environment = SUBSHELL_IGNTRAP;			/* XXX */
       if (asynchronous)
 	subshell_environment |= SUBSHELL_ASYNC;
       if (pipe_in != NO_PIPE || pipe_out != NO_PIPE)
diff --git a/patchlevel.h b/patchlevel.h
index 760e88cb..8020b323 100644
--- 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 11
+#define PATCHLEVEL 12
 
 #endif /* _PATCHLEVEL_H_ */
diff --git a/sig.c b/sig.c
index 6de13259..d82027e2 100644
--- a/sig.c
+++ b/sig.c
@@ -638,7 +638,10 @@ termsig_handler (int sig)
   interrupt_execution = retain_fifos = executing_funsub = 0;
   comsub_ignore_return = return_catch_flag = wait_intr_flag = 0;
 
-  run_exit_trap ();	/* XXX - run exit trap possibly in signal context? */
+  /* Don't run the exit trap if we're supposed to be ignoring traps in a
+     subshell environment. */
+  if ((subshell_environment & SUBSHELL_IGNTRAP) == 0)
+    run_exit_trap ();	/* XXX - run exit trap possibly in signal context? */
 
   kill_shell (sig);
 }