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104 lines
2.8 KiB
Text
104 lines
2.8 KiB
Text
BASH PATCH REPORT
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=================
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Bash-Release: 4.4
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Patch-ID: bash44-014
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Bug-Reported-by: Oyvind Hvidsten <oyvind.hvidsten@dhampir.no>
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Bug-Reference-ID: <c01b7049-925c-9409-d978-e59bf42591f4@dhampir.no>
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Bug-Reference-URL: http://lists.gnu.org/archive/html/bug-bash/2017-12/msg00023.html
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Bug-Description:
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Under some circumstances, functions that return via the `return' builtin do
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not clean up memory they allocated to keep track of FIFOs.
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Patch (apply with `patch -p0'):
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*** ../bash-20171205/execute_cmd.c 2017-12-08 07:38:28.000000000 -0500
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--- execute_cmd.c 2018-01-26 15:23:38.000000000 -0500
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***************
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*** 727,730 ****
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--- 727,732 ----
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ofifo = num_fifos ();
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ofifo_list = copy_fifo_list ((int *)&osize);
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+ begin_unwind_frame ("internal_fifos");
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+ add_unwind_protect (xfree, ofifo_list);
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saved_fifo = 1;
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}
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***************
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*** 742,746 ****
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#if defined (PROCESS_SUBSTITUTION)
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if (saved_fifo)
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! free ((void *)ofifo_list);
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#endif
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return (last_command_exit_value = EXECUTION_FAILURE);
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--- 744,751 ----
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#if defined (PROCESS_SUBSTITUTION)
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if (saved_fifo)
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! {
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! free ((void *)ofifo_list);
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! discard_unwind_frame ("internal_fifos");
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! }
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#endif
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return (last_command_exit_value = EXECUTION_FAILURE);
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***************
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*** 1061,1064 ****
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--- 1066,1070 ----
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close_new_fifos ((char *)ofifo_list, osize);
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free ((void *)ofifo_list);
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+ discard_unwind_frame ("internal_fifos");
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}
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#endif
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***************
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*** 4978,4984 ****
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#endif
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! #if defined (PROCESS_SUBSTITUTION)
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ofifo = num_fifos ();
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ofifo_list = copy_fifo_list (&osize);
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#endif
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--- 4984,4995 ----
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#endif
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! #if defined (PROCESS_SUBSTITUTION)
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! begin_unwind_frame ("saved_fifos");
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! /* If we return, we longjmp and don't get a chance to restore the old
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! fifo list, so we add an unwind protect to free it */
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ofifo = num_fifos ();
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ofifo_list = copy_fifo_list (&osize);
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+ if (ofifo_list)
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+ add_unwind_protect (xfree, ofifo_list);
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#endif
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***************
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*** 5064,5068 ****
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if (nfifo > ofifo)
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close_new_fifos (ofifo_list, osize);
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! free (ofifo_list);
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#endif
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--- 5075,5081 ----
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if (nfifo > ofifo)
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close_new_fifos (ofifo_list, osize);
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! if (ofifo_list)
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! free (ofifo_list);
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! discard_unwind_frame ("saved_fifos");
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#endif
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*** ../bash-4.4/patchlevel.h 2016-06-22 14:51:03.000000000 -0400
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--- patchlevel.h 2016-10-01 11:01:28.000000000 -0400
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***************
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*** 26,30 ****
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looks for to find the patch level (for the sccs version string). */
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! #define PATCHLEVEL 13
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#endif /* _PATCHLEVEL_H_ */
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--- 26,30 ----
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looks for to find the patch level (for the sccs version string). */
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! #define PATCHLEVEL 14
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#endif /* _PATCHLEVEL_H_ */
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