An example that using asm could bypass the style checker.

[qazwsxedcrfvtg14]

#include <stdio.h>
#include <stdint.h>
#define CONCATE(X, Y) X##Y
#define GLUE(X, Y) CONCATE(X,Y)
#define MYLABEL(LABEL) uint64_t LABEL;\
  asm volatile("%=:lea %=b(%%rip), %0;": "=r"(LABEL))
#define MYGOTO(LABEL) asm volatile("jmp *%0"::"r"(LABEL));
#define MYCONDITIONGOTO(CONDITION, LABEL) { \
  int __contition__ = CONDITION; \
  asm volatile("test %1, %1; jz %=f; jmp *%0;%=:"::\
  "r"(LABEL), "r"(__contition__));}
#define MYDOWHILE(BLOCK, CONDITION) { \
  MYLABEL(GLUE(__label_,__LINE__)); \
  {BLOCK}; \
  MYCONDITIONGOTO(CONDITION, GLUE(__label_,__LINE__));}

int main(){
  int a = 0;
  MYDOWHILE({
    printf("test A\n");
    a++;
  }, a<10);

  int b = 0;
  MYDOWHILE({
    printf("test B\n");
    b++;
  }, b<5);

  int c = 0;
  MYDOWHILE({
    int d = 0;
    MYDOWHILE({
      printf("test CD\n");
      d++;
    }, d<3);
    c++;
  }, c<2);
  return 0;
}

Output result:

suffix c
global variables found: 0
============================
if case while for found: 0
============================
? found: 0
============================
estimated cyclomatic complexity: 0
============================
goto found: 0
============================
the length of the longest line: 59

[pangfengliu]

The asm is blocked and a warning message is added.