变量使用R-1-13-15强制

禁止无符号变量赋负值

赋负值

test.c

1void foo(void)
2{
3    unsigned x;
4    x = -1;
禁止无符号变量赋负值 [gjb8114-r-1-13-15]
5}

显式转换

test.c

1void foo(void)
2{
3    unsigned x;
4    x = (unsigned)(-1);
5}