打了个指针版的treap，想用gdb调试，用gcc -g ×××.cpp -o a 时却报错了——直接用gcc编译却不会报错，提示：对‘operator new(unsigned int)’未定义的引用....
试了几次用g++编译居然过了。。
大概c++程序本来就是用g++编译的吧。。注意一下= =
有关g++编译调试的问题
Sometimes it s the very people who no one imagines anything of. who do the things that no one can imagine.