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IAR Embedded Workbench for RISC-V 3.40

MISRAC++2008-0-1-2_b

In this section:
Synopsis

(Required) A project shall not contain infeasible paths.

Enabled by default

Yes

Severity/Certainty

Medium/Medium

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Full description

The condition in if, for, while, do-while statement sequences and the ternary operator will never be met. This check is identical to RED-cond-never, MISRAC2012-Rule-14.3_b, MISRAC++2023-0.0.2_b.

Coding standards
CERT EXP17-C

Do not perform bitwise operations in conditional expressions

CWE 570

Expression is Always False

MISRA C:2012 Rule-14.3

(Required) Controlling expressions shall not be invariant

MISRA C++ 2023 0.0.2

(Advisory) Controlling expressions should not be invariant

Code examples

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

void example(void) {
  int x = 5;
  for (x = 0; x < 6 && x >= 1; x++);
}

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

void example(void) {
  int x = 5;
  for (x = 0; x < 6 && x >= 0; x++);
}