BASH PATCH REPORT
			     =================

Bash-Release:	5.3
Patch-ID:	bash53-013

Bug-Reported-by:	Florian Schmaus <flo@geekplace.eu>
Bug-Reference-ID:
Bug-Reference-URL:	https://savannah.gnu.org/bugs/?67586

Bug-Description:

Comparing the value of a pointer returned from realloc/xrealloc to the
original pointer passed is technically undefined behavior, which matters
under some circumstances.

Patch (apply with `patch -p0'):

*** ../bash-5.3-patched/builtins/read.def	Wed Jun 25 15:50:18 2025
--- builtins/read.def	Thu Nov 20 15:10:20 2025
***************
*** 789,794 ****
  	  x = (char *)xrealloc (input_string, size += 128);
  
! 	  /* Only need to change unwind-protect if input_string changes */
  	  if (x != input_string)
  	    {
  	      input_string = x;
--- 816,824 ----
  	  x = (char *)xrealloc (input_string, size += 128);
  
! #if 0
! 	  /* This is, in theory, undefined behavior, since input_string may
! 	     have been freed. */
  	  if (x != input_string)
+ #endif
  	    {
  	      input_string = x;

*** ../bash-5.3/patchlevel.h	2020-06-22 14:51:03.000000000 -0400
--- patchlevel.h	2020-10-01 11:01:28.000000000 -0400
***************
*** 26,30 ****
     looks for to find the patch level (for the sccs version string). */
  
! #define PATCHLEVEL 12
  
  #endif /* _PATCHLEVEL_H_ */
--- 26,30 ----
     looks for to find the patch level (for the sccs version string). */
  
! #define PATCHLEVEL 13
  
  #endif /* _PATCHLEVEL_H_ */