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MISRA C:2004规则5.5(建议):不应重用具有静态存储持续时间的对象或函数标识符

misra c

Gianni Spear · 技术社区 · 7 年前

违例者视为 Rule 5.5 (advisory): No object or function identifier with static storage duration should be reused 在以下代码中,尤其是 Static Identifier 'x' reused

 /* llvalue -> ICmp.t option */
CAMLprim value llvm_instr_icmp_predicate(LLVMValueRef Val) {
  CAMLparam0();
  int x = LLVMGetICmpPredicate(Val);
  if (x) {
    value Option = alloc(1, 0);
    Field(Option, 0) = Val_int(x - LLVMIntEQ);
    CAMLreturn(Option);
  }
  CAMLreturn(Val_int(0));
}

/* llvalue -> FCmp.t option */
CAMLprim value llvm_instr_fcmp_predicate(LLVMValueRef Val) {
  CAMLparam0();
  int x = LLVMGetFCmpPredicate(Val);
  if (x) {
    value Option = alloc(1, 0);
    Field(Option, 0) = Val_int(x - LLVMRealPredicateFalse);
    CAMLreturn(Option);
  }
  CAMLreturn(Val_int(0));
}