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memory leak in STL vector?
From: |
Thomas Hamelryck |
Subject: |
memory leak in STL vector? |
Date: |
5 Jun 2002 08:58:23 GMT |
User-agent: |
tin/pre-1.4-980514 (UNIX) (SunOS/5.7 (sun4u)) |
Hi,
I think I've come across a bug in the STL vector implementation
of g++ (g++ 2.95, g++ 2.96, on Mandrake Linux). The problem is a
meory leak in vector. When I test the following small test program
with ccmalloc (a memory leak identifier), a memory leak is reported:
#include <vector>
int main(void)
{
int i;
vector<int> v;
for (i=0; i<100; i++)
{
v.push_back(i);
}
}
Compilation:
g++ -ansi -pedantic-errors -Wall -g -p t.C -o t -lccmalloc -ldl
ccmalloc output :
*100.0% = 6848 Bytes of garbage allocated in 3 allocations
| |
| | 0x400abcbe in <???>
| |
| | 0x08049b18 in <main>
| | at t.C:10
| |
| | 0x0805500f in <vector<int, allocator<int>
| | at
/usr/lib/gcc-lib/i586-mandrake-linux/2.95.3/../../| |
| | 0x08054af8 in <vector<int, allocator<int>
| | at
/usr/lib/gcc-lib/i586-mandrake-linux/2.95.3/../../| |
| | 0x08054881 in <_Vector_alloc_base<int, allocator<int>
| | at
/usr/lib/gcc-lib/i586-mandrake-linux/2.95.3/../../| |
| | 0x08054848 in <simple_alloc<int, __default_alloc_template<true,
| | at
/usr/lib/gcc-lib/i586-mandrake-linux/2.95.3/../../| |
| | 0x08054796 in <__default_alloc_template<true, 0>
| | at
/usr/lib/gcc-lib/i586-mandrake-linux/2.95.3/../../| |
| | 0x08054677 in <__default_alloc_template<true, 0>
| | at
/usr/lib/gcc-lib/i586-mandrake-linux/2.95.3/../../| |
| | 0x08054542 in <__default_alloc_template<true, 0>
| | at
/usr/lib/gcc-lib/i586-mandrake-linux/2.95.3/../../| |
| `-----> 0x08049ea2 in <malloc>
| at src/wrapper.c:284
|
`------------------------------------------------------
Cheers,
-Thomas
- memory leak in STL vector?,
Thomas Hamelryck <=