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IAR Embedded Workbench for RISC-V 3.40

MISRAC2012-Rule-1.3_s

In this section:
Synopsis

(Required) There shall be no occurrence of undefined or critical unspecified behavior.

Enabled by default

Yes

Severity/Certainty

High/Medium

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Full description

A stack address is stored outside a function via a parameter. This check is identical to MEM-stack-param, MISRAC++2008-7-5-2_c, MISRAC++2023-6.8.3_c, MISRAC2004-17.6_d, MISRAC2012-Rule-18.6_d, CERT-DCL30-C_e.

Coding standards
CERT DCL30-C

Declare objects with appropriate storage durations

CWE 466

Return of Pointer Value Outside of Expected Range

MISRA C:2004 17.6

(Required) The address of an object with automatic storage shall not be assigned to another object that may persist after the first object has ceased to exist.

MISRA C:2012 Rule-18.6

(Required) The address of an object with automatic storage shall not be copied to another object that persists after the first object has ceased to exist

MISRA C++ 2008 7-5-2

(Required) The address of an object with automatic storage shall not be assigned to another object that may persist after the first object has ceased to exist.

MISRA C++ 2023 6.8.3

(Required) An assignment operator shall not assign the address of an object with automatic storage duration to an object with a greater lifetime

Code examples

The following code example fails the check and will give a warning:

void example(int **ppx) {
  int x;
  ppx[0] = &x;  //local address
}

The following code example passes the check and will not give a warning about this issue:

static int y = 0;
void example3(int **ppx){
  *ppx = &y;  //OK - static address
}