[Bug gdb/15240] New: record function-call-history prints a singleline for recursive function calls

["markus.t.metzger at intel dot com" <sourceware-bugzilla at sourceware dot org>]

http://sourceware.org/bugzilla/show_bug.cgi?id=15240

             Bug #: 15240
           Summary: record function-call-history prints a single line for
                    recursive function calls
           Product: gdb
           Version: unknown
            Status: NEW
          Severity: normal
          Priority: P2
         Component: gdb
        AssignedTo: unassigned@sourceware.org
        ReportedBy: markus.t.metzger@intel.com
    Classification: Unclassified


For a recursive function call, the "record function-call-history" command
prints a single line for the caller and the callee. It should instead print
separate lines for each instance of that recursive function.

Example:

1  void foo (int n)
2  {
3    if (n > 2)
4      foo (n-1);
5  }

It currently prints:

(gdb) record function-call-history /l
0  foo.c:2-5  foo

It should print:

(gdb) record function-call-history /l
0  foo.c:2-4  foo
1  foo.c:2-4  foo
2  foo.c:2-5  foo
3  foo.c:5    foo
4  foo.c:5    foo

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