[Emacs-diffs] Changes to emacs/etc/PROBLEMS

[Jan Djärv]

Index: emacs/etc/PROBLEMS
diff -c emacs/etc/PROBLEMS:1.178 emacs/etc/PROBLEMS:1.179
*** emacs/etc/PROBLEMS:1.178    Thu Jun 30 16:30:53 2005
--- emacs/etc/PROBLEMS  Sun Jul  3 21:47:06 2005
***************
*** 2376,2383 ****
  *** Linux: Segfault during `make bootstrap' under certain recent versions of 
the Linux kernel.
  
  With certain recent Linux kernels (like the one of Redhat Fedora Core
! 1 and 2), the new "Exec-shield" functionality is enabled by default, which
  creates a different memory layout that breaks the emacs dumper. 
  
  Configure can overcome the problem of exec-shield if the architecture is
  x86 and the program setarch is present.  On other architectures no
--- 2376,2385 ----
  *** Linux: Segfault during `make bootstrap' under certain recent versions of 
the Linux kernel.
  
  With certain recent Linux kernels (like the one of Redhat Fedora Core
! 1 and newer), the new "Exec-shield" functionality is enabled by default, which
  creates a different memory layout that breaks the emacs dumper. 
+ The work-around explained here is not enough on Fedora Core 4 (and possible
+ newer). Read the next item.
  
  Configure can overcome the problem of exec-shield if the architecture is
  x86 and the program setarch is present.  On other architectures no
***************
*** 2404,2409 ****
--- 2406,2427 ----
  
      setarch i386 ./temacs --batch --load loadup [dump|bootstrap]
  
+  
+ *** Fedora Core 4 GNU/Linux: Segfault during dumping.
+ 
+ In addition to exec-shield explained above "Linux: Segfault during
+ `make bootstrap' under certain recent versions of the Linux kernel"
+ item, Linux kernel shipped with Fedora Core 4 randomizes the virtual
+ address space of a process. As the result dumping may fail even if
+ you turn off exec-shield. In this case, use the -R option to the setarch
+ command:
+ 
+    setarch -R i386 ./temacs --batch --load loadup [dump|bootstrap]
+ 
+ or
+ 
+    setarch -R i386 make bootstrap      
+ 
  *** Fatal signal in the command  temacs -l loadup inc dump.
  
  This command is the final stage of building Emacs.  It is run by the