c6411.md

description	title	ms.date	f1_keywords	ms.assetid
Learn more about: Warning C6411	Warning C6411	11/04/2016	C6411 POTENTIAL_READ_OVERRUN	6bbc1734-eec4-4ad6-9908-4ed2a5f025db

Warning C6411

Potentially reading invalid data from 'buffer'.

Remarks

This warning indicates that the value of the index that is used to read from the buffer can exceed the readable size of the buffer. The code analysis tool may report this warning in error. The error may occur when it can't reduce a complex expression that represents the buffer size, or the index used to access the buffer.

Code analysis name: POTENTIAL_READ_OVERRUN

Example

The following code generates this warning.

char *a = new char[strlen(InputParam)];
delete[] a;
a[10];

The following code corrects this error.

int i = strlen(InputParam);
char *a = new char[i];
if (i > 10) a[10];
delete[] a;