[Valgrind-users] Mismatched new/delete

SourceForge Headquarters 225 Broadway Suite 1600 San Diego, CA 92101 +1 (858) 422-6466

<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html>
Hi all,
I hope someone could give me a hand here - Valgrind is reporting mismatched
free/delete operation in one of my classes, however I am doing plain new
and matching delete.&nbsp; Here is a snippet of the log:
==15083== Thread 24:
 ==15083== Mismatched free() / delete / delete []
 ==15083==&nbsp;&nbsp;&nbsp; at 0x4015E62D: __builtin_delete (vg_clientfuncs.c:199)
 ==15083==&nbsp;&nbsp;&nbsp; by 0x4029059B: BTNode::~BTNode(void) (../src/BinTree.cpp:71)
 ==15083==&nbsp;&nbsp;&nbsp; by 0x459D3F69: SymTableEntry::~SymTableEntry(void)
(../src/SymTable.cc:168)
 ...
 ==15083==&nbsp;&nbsp;&nbsp; Address 0x4480F42C is 0 bytes inside a
block of size 120 alloc'd
 ==15083==&nbsp;&nbsp;&nbsp; at 0x4015E310: malloc (vg_clientfuncs.c:103)
 ==15083==&nbsp;&nbsp;&nbsp; by 0x459D9CAB: __builtin_new (../../gcc-2.95.3/gcc/cp/new1.cc:77)
 ==15083==&nbsp;&nbsp;&nbsp; by 0x459D3D8B: SymTable::Insert(char const
*, int, int, int) (../src/SymTable.cc:96)
Now, as you can see the allocation is done by __builtin_new, and deallocation
by __builtin_delete - no mismatch here. What is strange though is that
__builtin_delete is intercepted by valgrind, whereas __builtin_new goes
into compiler and valgrind sees only malloc from there.&nbsp; Quite naturally,
it reports a mismatch in this case.&nbsp; Does anyone know a reason why
this is happening and how to fix it ?
Thanks!
 Alex
<pre>--&nbsp;
Alex G. Ivershen&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Inet Technologies, Inc.
Network Products Dept.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1500 N. Greenville Ave.
Inet Technologies Inc.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Richardson, TX 75081
Phone: +1-469-330-4295&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; USA

"Black Holes are where God divided by zero"</pre>
&nbsp;</html>