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commit 1e52e8495a074c9d1f7ef17f13b9060b76be6f41
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Author: Sergio Lopez <slp@redhat.com>
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Date: Mon Dec 4 09:17:13 2017 +0100
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Document new {set,show} dump-excluded-mappings commands.
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gdb/ChangeLog:
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2017-11-29 Sergio Lopez <slp@redhat.com>
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* NEWS (Changes since GDB 8.0): Announce {set,show}
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dump_excluded_mappings commands.
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gdb/doc/ChangeLog:
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2017-11-29 Sergio Lopez <slp@redhat.com>
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* gdb.texinfo (gcore): Mention new {set,show}
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dump-excluded-mappings commands.
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(set dump-excluded-mappings): Document new command.
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Index: gdb-7.6.1/gdb/NEWS
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===================================================================
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--- gdb-7.6.1.orig/gdb/NEWS 2017-12-06 20:56:34.005080504 +0100
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+++ gdb-7.6.1/gdb/NEWS 2017-12-06 20:56:52.510200234 +0100
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@@ -7,6 +7,11 @@
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Add entries to the list of directories from which to load auto-loaded
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scripts.
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+set dump-excluded-mappings
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+show dump-excluded-mappings
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+ Control whether mappings marked with the VM_DONTDUMP flag should be
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+ dumped when generating a core file.
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+
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* Newly installed $prefix/bin/gcore acts as a shell interface for the
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GDB command gcore.
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Index: gdb-7.6.1/gdb/doc/gdb.texinfo
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===================================================================
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--- gdb-7.6.1.orig/gdb/doc/gdb.texinfo 2017-12-06 20:56:30.604058498 +0100
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+++ gdb-7.6.1/gdb/doc/gdb.texinfo 2017-12-06 20:56:34.015080568 +0100
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@@ -10318,7 +10318,9 @@
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On @sc{gnu}/Linux, this command can take into account the value of the
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file @file{/proc/@var{pid}/coredump_filter} when generating the core
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-dump (@pxref{set use-coredump-filter}).
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+dump (@pxref{set use-coredump-filter}), and by default honors the
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+@code{VM_DONTDUMP} flag for mappings where it is present in the file
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+@file{/proc/@var{pid}/smaps} (@pxref{set dump-excluded-mappings}).
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@kindex set use-coredump-filter
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@anchor{set use-coredump-filter}
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@@ -10348,6 +10350,16 @@
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(anonymous private mappings), @code{1} (anonymous shared mappings),
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@code{4} (ELF headers) and @code{5} (private huge pages) are active.
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This will cause these memory mappings to be dumped automatically.
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+
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+@kindex set dump-excluded-mappings
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+@anchor{set dump-excluded-mappings}
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+@item set dump-excluded-mappings on
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+@itemx set dump-excluded-mappings off
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+If @code{on} is specified, @value{GDBN} will dump memory mappings
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+marked with the @code{VM_DONTDUMP} flag. This flag is represented in
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+the file @file{/proc/@var{pid}/smaps} with the acronym @code{dd}.
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+
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+The default value is @code{off}.
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@end table
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@node Character Sets
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