Ask a question about the parameters passed by 2 threads causing the data of 2 parameters to change

jamsteaven

May i create a thread to pass a parameter a [0]
Then I create a thread to pass a parameter a [1], but the content of a [1] has changed at this time. What is the reason?

wintermaul

Post key codes for arrays and threads to provide more clues

jamsteaven

That a[] is an array of structures,
A button is used to create a thread and pass one of the a array, and increment.
The structure of a is a pointer to class and a pointer to ClistBox

When the button is clicked for the first time, the program is normal, and the error occurs when the button is clicked the second time.
May I ask what kind of situation can cause such a situation to happen

爱德华德

Is the array element out of bounds, or caused by memory overflow?

jamsteaven

But there is no hint of memory overflow,
When it is executed for the first time, the data in array 2

jiess

Array variable life cycle problem

wintermaul

A button is used to create a thread and pass one of the a array, and increment

What to increment? ?

ethcarl

When you click the button, see if there is an operation in the thread

红袖点灯

1. Check where the a[] array is defined, where the value is assigned, and will it affect the value in a[] when the button is clicked.
2. (Important) In the thread function you opened, carefully check whether the pointer passed in is overwritten?

达摩克斯

The specific code is posted, everyone see