<分区>
我正在用 C++ 创建一个 Vector 类，但遇到了一些问题。
==23391== Invalid write of size 4
==23391== at 0x401CAB: IntVector::IntVector(int, int) (IntVector.cpp:35)
==23391== by 0x401009: main (main.cpp:36)
==23391== Address 0x4c25218 is 0 bytes after a block of size 200 alloc'd
==23391== at 0x4A07152: operator new[](unsigned long) (vg_replace_malloc.c:363)
==23391== by 0x401C7F: IntVector::IntVector(int, int) (IntVector.cpp:32)
==23391== by 0x401009: main (main.cpp:36)
IntVector::IntVector(int size, int value){
capacity = INITIAL_CAPACITY;
while(size >= capacity)
{
capacity = capacity*2;
}
if(size < 0)
{
count = 0;
array = new int[capacity];
}
else
{
count = size;
array = new int[capacity]; // line 32
for(int i = 0; i < count; i++)
{
array[i] = value; //line 36
}
}
为什么我可以读取或写入数组？在 main 中，我声明了 v1(5,0) 和 initial capacity = 50 并且循环只转到 4，所以它不可能读取或写入超过 50!