Hi,
I made some tests with g++ 3.2.3 and g++ 3.3.1 on GNU/Linux and on
cygwin g++ 3.3.1. And I got the same results : when I run this program,
when inserting "key20" to "key24" the size of the hash_map does not
evolve.
When I try to get the results back, "key15" to "key19" all give the
result 20.
I noticed something when debugging the code, in the function resize, the
current size is compared to _M_bucket.size() that allways returns 193.
Does someone noticed the same behavior ?
#include <ext/hash_map>
#include <iostream>
using namespace std;
using namespace __gnu_cxx;
struct eqstr
{
bool operator()(const char* s1, const char* s2) const
{
return strcmp(s1, s2) == 0;
}
};
int
main()
{
char str[128];
hash_map<const char*, int, hash<const char*>, eqstr> h;
cout << "hash size = " << h.size() << '\n';
for (int i = 0; i < 31; ++i) {
sprintf(str, "key%d", i);
h[str] = i;
cout << "size = " << h.size() << " str = " << str << '\n';
}
for (int i = 0; i < 31; ++i) {
sprintf(str, "key%d", i);
cout << str << " = " << h[str] << '\n';
}
}
À+
PP
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Patrick Percot.
