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LDRA tool suite

12 S

Fully Implemented

GCC

can detect some violations of this recommendation when the -Wswitch and -Wswitch-default flags are used

Compass/ROSE

can detect some violations of this recommendation. In particular, it flags switch statements that do not have a default clause. ROSE should also detect "fake switches," as well (that is, a chain of if statements each checking the value of the same variable). These if statements should always end in an "else" clause, or they should mathematically cover every possibility. For instance, consider the following:

  if (x > 0) {
	  /* ... */
  } else if (x < 0) {
    /* ... */
  } else if (x == 0) {
    /* ... */
  }

Klocwork

LA_UNUSED