profiler overflow

Hi all.

The profile option of gauche is really useful.
But for long running processes, the call counters overflow easily.
Is there any fix for this?

Here is an example output with overflowing counters:

Profiler statistics (total 293990 samples, 2939.9 seconds)
                                                    num    time/    total
Name                                                calls  call(ms) samples
---------------------------------------------------+------+-------+-----------
type-path                                 -469184277  0.0-10 49740( 17%)
copy-tree                                 -193550379  0.00-8 16724(  6%)
list-ref                                  -316821302  0.00-4 15393(  5%)
feature-info                              -247474676  0.00-5 13322(  5%)
fs-value-i                                -142526308  0.00-8 11968(  4%)
fs-value                                  366582049  0.0003 11203(  4%)
(type-path #f)                            -247417036  0.00-4 10650(  4%)
type-feature-position                     -247490415  0.00-4  9972(  3%)
map                                       -299505258  0.00-2  8604(  3%)
...

Greetings
Sven

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