I am just guessing, as I have never used singleton_pool It looks like malloc() returns raw memory. You just cast the raw pointer to data* Since 'data' is a non-POD type it should be initialized by calling the constructor I would suggest changing the call to data* d = new(myStruct::poolMemory::malloc()) data(); This placement new syntax results in calling the constructor on the raw address obtained from malloc() The default constructor will initialize "myComplexType" and make it usable Hope that helps 2012/10/12 Claude

Ok, now it work well, thanks!

But..I have another problem. In this code (C++11 with std::tuple)

#include <iostream> #include <map> #include <tuple> #include

using namespace std;

struct data { int a,b; char name[50]; std::mapstd::string,std::tuple<uint16_t,uint16_t> myComplexType; };

struct myStruct { struct MyOrderTag {}; typedef boost::singleton_pool poolMemory; };

int main() { data *d = (data*)myStruct::poolMemory::malloc();

d->a = 8; strcpy(d->name,"Hello!");

//fill myComplexType field (this row causes a segfault!) d->myComplexType["one"] = std::tuple(1,2);

myStruct::poolMemory::release_memory(); return 0; }

I obtain a segmentation fault error when assign a tuple at myComplexType field. What is wrong?

-- View this message in context: http://boost.2283326.n4.nabble.com/Pool-Use-singleton-pool-in-struct-tp46367... Sent from the Boost - Users mailing list archive at Nabble.com. _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users