valgrind在用gcc5.1编译的空程序中检测到“仍然可到达的泄漏”，g++./a.cpp，intmain(){}valgrind说，valgrind./a.out，==32037==HEAPSUMMARY:==32037==inuseatexit:72,704bytesin1blocks==32037==totalheapusage:1allocs,0frees,72,704bytesallocated==32037====32037==LEAKSUMMARY:==32037==definitelylost:0bytesin0blocks==32037==indirectlylo