---
name: "sigstack"
section: "2"
platform: "freebsd"
package: "base"
version: "16.0-CURRENT-20261027-61c70dc16a79"
release: "FreeBSD 16.0-CURRENT (2026-10-27)"
platforms: ["linux", "freebsd", "macos"]
url: "https://new.carta.tech/sigstack"
---

# sigstack(2)

set and/or get signal stack context

## NAME

**sigstack** – set and/or get signal stack context

## LIBRARY

Standard C Library (libc, -lc)

## DESCRIPTION

The **sigstack**() function has been deprecated in favor of the interface described in [sigaltstack(2)](/sigaltstack/2.md).

## SEE ALSO

[sigaltstack(2)](/sigaltstack/2.md)

## HISTORY

The **sigstack**() system call appeared in 4.2BSD.