用erase删除元素后迭代器会失效

做一道求两数组交集的题目时我用迭代器遍历两个数组，并在迭代中用了erase操作，有了下面的报错

=================================================================
==42==ERROR: AddressSanitizer: negative-size-param: (size=-120)
    #5 0x7f52c5b84082  (/lib/x86_64-linux-gnu/libc.so.6+0x24082)
0x602000000114 is located 4 bytes inside of 8-byte region [0x602000000110,0x602000000118)
allocated by thread T0 here:
    #6 0x7f52c5b84082  (/lib/x86_64-linux-gnu/libc.so.6+0x24082)
==42==ABORTING

错误代码如下

for(vector<int>::iterator it1=nums1.begin();it1 !=nums1.end();)
        {
            for(vector<int>::iterator it2=nums2.begin();it2 !=nums2.end();)
            {
                if(*it1==*it2)
                {
                    com.push_back(*it1);
                    nums1.erase(it1);
                    nums1.erase(it2);
                    continue;
                }
                it2++;

            }
            it1++;
        }

补充一点 可以利用迭代器修改vector元素

vector<int>v1;
v1.push_back(10);
vector<int>::iterator it = v1.begin();
*it = 12;
cout<<*it;

v1先插入的元素10被修改为了12