Opened 15 years ago

Closed 15 years ago

#177 closed bug (fixed)

memory leak when using list insert?

Reported by: Frank Volny Owned by: somebody
Priority: minor Milestone: 3-1-1
Component: singular-kernel Version: 3-1-0
Keywords: list insert Cc:


reported on Oct 26, 2009 by Frank Volny:

I'm having problems with the insert function. I think it may be a memory leak. I have version 3-1-0 (from APT/DEB under Debian/Ubuntu? instructions). Whenever I run the following, 1.2 GB of memory "disappears". I can't find any other way of using the insert function or any way to force a garbage collection. Rerunning the following uses even more memory (some from swap space). Rerunning it a third time crashes Singular. I hope I'm not doing anything stupid and wasting your time.

Thanks in advance! frank





tst_mem(250); big memory leak? memory(0);




proc tst_mem(int count) {

ring R = 2,(x,y),lp; list l1; poly p1 = x; for(int j = 0; j < count; j++ ) {

p1 = x; for(int i = 0; i < 200; i++) {

l1 = list(p1) + l1; this uses practically no memory l1 = insert(l1, p1); memory leak l1 = insert(l1, p1, 0); memory leak l1 = insert(l1, p1, size(l1)); memory leak p1 = p1 * x + p1;

} while(size(l1) > 0) { l1 = delete(l1,1); }



Change History (1)

comment:1 Changed 15 years ago by hannes

Resolution: fixed
Status: newclosed

insert (in all variants) copied instead of modified - fixed in Singular/

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