Realloc Invalid Pointer Error Parsing

Realloc Invalid Pointer Error

Char * temp = (char *) realloc (SRC, sizeof (char) * 100 );

As shown in the above lineCode. The error occurs because SRC points to a non-null or heap address.

The specific requirements of the realloc function are as follows:

1. src = NULL

2. the SRC pointer must be malloc (), calloc (), or realloc () allocated

 

Code that causes errors

The error code is generally in the following format:

Char * src = "Hello world! "; // Error code

Or

Char SRC [100]; // error code

The above two methods are used to allocate memory in the stack (if SRC is a local variable) or static area (if SRC is a global variable ). If SRC is passed to realloc, The realloc Invalid Pointer Error will occur.

 

Solution:

1. Use SRC to display allocated memory with malloc

Char * src = "Hello world! ";// Error code

You can replace it with the following code:

Char * src = (char *) malloc (strlen ("Hello world! "));

Strcpy (SRC, "Hello world! "); // The string. h header file is used.

 

Char SRC [2, 100];// Error code

You can replace it with the following code:

Char * src = (char *) malloc (sizeof (char) * 100 );

 

2. Set SRC to null

Char * src = NULL;

This article is original by Ladd. For more information, see the source.

Http://www.cnblogs.com/ladd/archive/2012/07/02/2572112.html

Realloc Invalid Pointer Error

Char * temp = (char *) realloc (SRC, sizeof (char) * 100 );

For example, the above line of code may contain errors in the title. The error occurs because SRC points to a non-null or heap address.

The specific requirements of the realloc function are as follows:

1. src = NULL

2. the SRC pointer must be malloc (), calloc (), or realloc () allocated

 

Code that causes errors

The error code is generally in the following format:

Char * src = "Hello world! "; // Error code

Or

Char SRC [100]; // error code

The above two methods are used to allocate memory in the stack (if SRC is a local variable) or static area (if SRC is a global variable ). If SRC is passed to realloc, The realloc Invalid Pointer Error will occur.

 

Solution:

1. Use SRC to display allocated memory with malloc

Char * src = "Hello world! ";// Error code

You can replace it with the following code:

Char * src = (char *) malloc (strlen ("Hello world! "));

Strcpy (SRC, "Hello world! "); // The string. h header file is used.

 

Char SRC [2, 100];// Error code

You can replace it with the following code:

Char * src = (char *) malloc (sizeof (char) * 100 );

 

2. Set SRC to null

Char * src = NULL;

This article is original by Ladd. For more information, see the source.

Http://www.cnblogs.com/ladd/archive/2012/07/02/2572112.html