# fstack-security-check

Determines whether the compiler generates code that detects some buffer overruns.

## Syntax

Linux: | -fstack-security-check -fno-stack-security-check

macOS: | -fstack-security-check -fno-stack-security-check

Windows: | None

## Arguments

None

## Default

-fno-stack-security-check | The compiler does not detect buffer overruns.

## Description

This option determines whether the compiler generates code that detects some buffer overruns that overwrite the return address. This is a common technique for exploiting code that does not enforce buffer size restrictions.

This option always uses an Intel implementation.

For a gcc-compliant version of this feature, see option fstack-protector.

## IDE Equivalent

None

## Alternate Options

Linux and macOS*: None

Windows: /GS

Parent topic: Data Options

## See Also

fstack-protector compiler option
GS compiler option