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-rw-r--r--gdb/doc/gdb.texinfo18
1 files changed, 18 insertions, 0 deletions
diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
index f4ce3d3..e39f993 100644
--- a/gdb/doc/gdb.texinfo
+++ b/gdb/doc/gdb.texinfo
@@ -39716,6 +39716,24 @@ These are representative commands for each @var{kind} of setting type
@value{GDBN} supports. They are used by the testsuite for exercising
the settings infrastructure.
+@kindex maint set backtrace-on-fatal-signal
+@kindex maint show backtrace-on-fatal-signal
+@item maint set backtrace-on-fatal-signal [on|off]
+@itemx maint show backtrace-on-fatal-signal
+When this setting is @code{on}, if @value{GDBN} itself terminates with
+a fatal signal (e.g.@: SIGSEGV), then a limited backtrace will be
+printed to stderr. This backtrace can be used to help diagnose
+crashes within @value{GDBN} in situations where a user is unable to
+share a corefile with the @value{GDBN} developers.
+
+If the functionality to provide this backtrace is not available for
+the platform on which GDB is running then this feature will be
+@code{off} by default, and attempting to turn this feature on will
+give an error.
+
+For platforms that do support creating the backtrace this feature is
+@code{on} by default.
+
@kindex maint with
@item maint with @var{setting} [@var{value}] [-- @var{command}]
Like the @code{with} command, but works with @code{maintenance set}