commit c179febe79bf2fe2f64852c827813fc46da819f5
Author: Sergio Lopez <slp@redhat.com>
Date:   Mon Dec 4 09:17:15 2017 +0100

    Document the new "-a" command line option for gcore
    
    gdb/ChangeLog:
    2017-11-29  Sergio Lopez  <slp@redhat.com>
    
            * NEWS (Changes since GDB 8.0): Announce new "-a"
            command line option for gcore.
    
    gdb/doc/ChangeLog:
    2017-11-29  Sergio Lopez  <slp@redhat.com>
    
            * gdb.texinfo (gcore man): Document new "-a" command line option.

Index: gdb-7.6.1/gdb/NEWS
===================================================================
--- gdb-7.6.1.orig/gdb/NEWS	2017-12-06 20:58:33.885856147 +0100
+++ gdb-7.6.1/gdb/NEWS	2017-12-06 20:59:03.174045646 +0100
@@ -12,6 +12,11 @@
   Control whether mappings marked with the VM_DONTDUMP flag should be
   dumped when generating a core file.
 
+* New command line options (gcore)
+
+-a
+  Dump all memory mappings.
+
 * Newly installed $prefix/bin/gcore acts as a shell interface for the
   GDB command gcore.
 
Index: gdb-7.6.1/gdb/doc/gdb.texinfo
===================================================================
--- gdb-7.6.1.orig/gdb/doc/gdb.texinfo	2017-12-06 20:58:22.471782297 +0100
+++ gdb-7.6.1/gdb/doc/gdb.texinfo	2017-12-06 20:58:33.891856186 +0100
@@ -43242,7 +43242,7 @@
 
 @format
 @c man begin SYNOPSIS gcore
-gcore [-o @var{filename}] @var{pid}
+gcore [-a] [-o @var{filename}] @var{pid}
 @c man end
 @end format
 
@@ -43256,6 +43256,13 @@
 
 @c man begin OPTIONS gcore
 @table @env
+@item -a
+Dump all memory mappings.  The actual effect of this option depends on
+the Operating System.  On @sc{gnu}/Linux, it will disable
+@code{use-coredump-filter} (@pxref{set use-coredump-filter}) and
+enable @code{dump-excluded-mappings} (@pxref{set
+dump-excluded-mappings}).
+
 @item -o @var{filename}
 The optional argument
 @var{filename} specifies the file name where to put the core dump.