Mention the crashes on Yellow Dog GNU/Linux on MacPPC, and provide

a work-around.

diff --git a/etc/PROBLEMS b/etc/PROBLEMS
index 64cf3485f3f29e3f27fdfb4401e925ff05cde3d1..d60b8b14c8e9401dff7b16e43e1dcfb247039065 100644 (file)
--- a/etc/PROBLEMS
+++ b/etc/PROBLEMS
@@ -58,6 +58,43 @@ in the `/gnu/emacs/windows' directory a program called `djtarnt.exe'
 which can be used to unpack `.tar.gz' and `.zip' archives without
 mangling them.
 
+* Emacs crashes when dumping itself on Mac PPC running Yellow Dog GNU/Linux.
+
+The crashes happen inside the function Fmake_symbol; here's a typical
+C backtrace printed by GDB:
+
+  0x190c0c0 in Fmake_symbol ()
+  (gdb) where
+  #0  0x190c0c0 in Fmake_symbol ()
+  #1  0x1942ca4 in init_obarray ()
+  #2  0x18b3500 in main ()
+  #3  0x114371c in __libc_start_main (argc=5, argv=0x7ffff5b4, envp=0x7ffff5cc,
+
+This could happen because GCC version 2.95 and later changed the base
+of the load address to 0x10000000.  Emacs needs to be told about this,
+but we currently cannot do that automatically, because that breaks
+other versions of GNU/Linux on the MacPPC.  Until we find a way to
+distinguish between the Yellow Dog and the other varieties of
+GNU/Linux systems on the PPC, you will have to manually uncomment the
+following section near the end of the file src/m/macppc.h in the Emacs
+distribution:
+
+  #if 0  /* This breaks things on PPC GNU/Linux ecept for Yellowdog,
+           even with identical GCC, as, ld.  Let's take it out until we
+           know what's really going on here.  */
+  /* GCC 2.95 and newer on GNU/Linux PPC changed the load address to
+     0x10000000.  */
+  #if defined __linux__
+  #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95)
+  #define DATA_SEG_BITS  0x10000000
+  #endif
+  #endif
+  #endif /* 0 */
+
+Remove the "#if 0" and "#endif" directives which surround this, save
+the file, and then reconfigure and rebuild Emacs.  The dumping process
+should now succeed.
+
 * JPEG images aren't displayed.
 
 This has been reported when Emacs is built with jpeg-6a library.