[Emacs-diffs] Changes to emacs/src/s/aix4-2.h

[Dan Nicolaescu]

Index: emacs/src/s/aix4-2.h
diff -c emacs/src/s/aix4-2.h:1.4 emacs/src/s/aix4-2.h:1.5
*** emacs/src/s/aix4-2.h:1.4    Mon Sep  1 15:45:58 2003
--- emacs/src/s/aix4-2.h        Fri Sep 23 17:06:02 2005
***************
*** 2,6 ****
--- 2,24 ----
  
  #undef ALIGN_DATA_RELOC
  
+ /* On AIX Emacs uses the gmalloc.c malloc implementation.  But given
+    the way this system works, libc functions that return malloced
+    memory use the libc malloc implementation. Calling xfree or
+    xrealloc on the results of such functions results in a crash. 
+ 
+    One solution for this could be to define SYSTEM_MALLOC here, but
+    that does not currently work on this system.
+ 
+    It is possible to completely override the malloc implementation on
+    AIX, but that involves putting the malloc functions in a shared
+    library and setting the MALLOCTYPE environment variable to point to
+    tha shared library.
+    
+    Emacs currently calls xrealloc on the results of get_current_dir name,
+    to avoid a crash just use the Emacs implementation for that function.
+ */
+ #define BROKEN_GET_CURRENT_DIR_NAME 1
+ 
  /* arch-tag: 38fe75ea-6aef-42bd-8449-bc34d921a562
     (do not change this comment) */