力扣的坑，也是关于函数指针的问题

做力扣的第一道题，题号350，两个数组的交集。

45ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7fffdfc18dd4 at pc 0x0000004019fc bp 0x7fffdfc18c80 sp 0x7fffdfc18c70 WRITE of size 4 at 0x7fffdfc18dd4 thread T0 #2 0x7f5ba6fe682f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2082f) Address 0x7fffdfc18dd4 is located in stack of thread T0 at offset 164 in frame This frame has 6 object(s): [32, 36) ‘size_1’ [96, 100) ‘size_2’ [160, 164) ‘ret_size’ 0x10007bf7b1b0: f2 f2 04 f2 f2 f2 f2 f2 f2 f2[04]f2 f2 f2 f2 f2 0x10007bf7b1c0: f2 f2 00 f2 f2 f2 f2 f2 f2 f2 00 f2 f2 f2 f2 f2 0x10007bf7b1d0: f2 f2 04 f2 f2 f2 00 00 00 00 00 00 00 00 00 00 0x10007bf7b1e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x10007bf7b1f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x10007bf7b200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Shadow byte legend (one shadow byte represents 8 application bytes): Addressable: 00 Partially addressable: 01 02 03 04 05 06 07 Heap left redzone: fa Freed heap region: fd Stack left redzone: f1 Stack mid redzone: f2 Stack right redzone: f3 Stack after return: f5 Stack use after scope: f8 Global redzone: f9 Global init order: f6 Poisoned by user: f7 Container overflow: fc Array cookie: ac Intra object redzone: bb ASan internal: fe Left alloca redzone: ca Right alloca redzone: cb Shadow gap: cc 45ABORTING

一大堆的知识。一股离谱涌上心头。查了查，stack-buffer-overflow（栈溢出。没太理解。） 后来改了改，不用数组，改用指针的地址。