gdb/592: Serious memory leak and slow perf of call foo()/print foo() commands

[stcarrez at nerim dot fr]

>Number:         592
>Category:       gdb
>Synopsis:       Serious memory leak and slow perf of call foo()/print foo() commands
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Jun 30 01:28:00 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     Stephane Carrez
>Release:        5.2
>Organization:
>Environment:
i686-pc-linux-gnu
Using the following gcc (but it's not related to it):
/usr/lib/gcc-lib/i586-mandrake-linux-gnu/2.96/specs
gcc version 2.96 20000731 (Mandrake Linux 8.2 2.96-0.76mdk)
>Description:
There is a serious memory leak when we use the call foo() or
print foo() commands.  The problem shows up clearly with
C++ programs that have big symbol tables (due to template
instantiations).

Gdb's process eats 140Mb after each call bar(0).

The C++ prog attached does nothing useful but instantiates
several STL map templates.
>How-To-Repeat:
Compile the example with:

g++ -o tst tst.C -g
Try in gdb:

gdb tst
(gdb) b main
#  At this step, gdb uses 15Mb
(gdb) run
(gdb) call bar(0)
# the command is slow and gdb now uses 157Mb
(gdb) call bar(0)
# Likewise and it reached 297Mb
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:
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