The following code seems not to work with the compilers mentioned above on Linux OS.
#include <vector>
#include <iostream>
typedef unsigned long T; // doesn't work
//typedef unsigned int T; // works
int main()
{
std::vector<T> fibonacci;
fibonacci.push_back( T(0) );
fibonacci.push_back( T(1) ); // works for just 2 elements
fibonacci.push_back( T(1) ); // doesn't work with 3 elements (and "unsigned long" and auto)
//fibonacci.push_back( T(2) ); // works again with 4 elements
auto fib( fibonacci ); // doesn't work
//std::vector<T> fib( fibonacci ); // works
for( int i = 0; i < fib.size(); ++i )
std::cout << fib[i] << ", ";
std::cout << std::endl;
return 0;
}
Output:
[SHELL]> g++ -std=c++0x main.cpp && ./a.out 0, 1, 1, [SHELL]> icpc -std=c++0x main.cpp && ./a.out 6303744, 1, 1,
Valgrind output (We suspect the output to be correct due to 0 initialization of memory):
[SHELL]> valgrind ./a.out ==1734== Memcheck, a memory error detector ==1734== Copyright (C) 2002-2012, and GNU GPL'd, by Julian Seward et al. ==1734== Using Valgrind-3.8.1 and LibVEX; rerun with -h for copyright info ==1734== Command: ./a.out ==1734== ==1734== Invalid read of size 8 ==1734== at 0x400FCD: main (in ~/a.out) ==1734== Address 0x5b0b140 is 0 bytes inside a block of size 24 free'd ==1734== at 0x4C273B8: operator delete(void*) (vg_replace_malloc.c:480) ==1734== by 0x400FB8: main (in ~/a.out) ==1734== 0, 1, 1, ==1734== ==1734== HEAP SUMMARY: ==1734== in use at exit: 0 bytes in 0 blocks ==1734== total heap usage: 4 allocs, 4 frees, 80 bytes allocated ==1734== ==1734== All heap blocks were freed -- no leaks are possible ==1734== ==1734== For counts of detected and suppressed errors, rerun with: -v ==1734== ERROR SUMMARY: 3 errors from 1 contexts (suppressed: 5 from 5)
