[metadata]
id = "DCL21-C"
type = "recommendation"
category = "DCL"
number = 21
title = "Understand the storage of compound literals"
description = """
Subclause 6.5.2.5 of the C Standard [ISO/IEC 9899:2011] defines a compound
literal as The storage for this object is either static (if the compound literal
occurs at file scope) or automatic (if the compound literal occurs at block
scope), and the storage duration is associated with its immediate enclosing
block. For example, in the function void func(void) { int *ip =
(int[4]){1,2,3,4}; /* ... */ }
"""
severity = "Low"
likelihood = "Unlikely"
priority = "P1"
level = "L3"
cert_version = "2016 Edition (Wiki)"
last_modified = "Oct 29, 2025"
[rules.cert_c.DCL21-C]
enabled = true
[references]
wiki = "https://wiki.sei.cmu.edu/confluence/display/c/DCL21-C.+Understand+the+storage+of+compound+literals"