看一下下面的代码(当然包括错误，以检验splint的功能)：

#include

int main(int argc,char* argv[]){

int a=100; /*没有使用的变量*/

int b[8];

printf("Hello c\n");

b[9]=100; /*明显数组越界 */

/* 用到了两个为声明的变量c和d/

c=100;

d=10;

return 0;

}

现在可以用splint来检查一下，为了检验是否可以检测到数组越界，使用+bounds选项。

splint hi.c +bounds

输出结果：

hi.c: (in function main)

hi.c:9:2: Unrecognized identifier: c

Identifier used in code has not been declared. (Use -unrecog to inhibit

warning)

hi.c:10:2: Unrecognized identifier: d

hi.c:4:6: Variable a declared but not used

A variable is declared but never used. Use /*@unused@*/ in front of

declaration to suppress message. (Use -varuse to inhibit warning)

hi.c:7:2: Likely out-of-bounds store:

b[9]

Unable to resolve constraint:

requires 7 >= 9

needed to satisfy precondition:

requires maxSet(b @ hi.c:7:2) >= 9

A memory write may write to an address beyond the allocated buffer. (Use

-likely-boundswrite to inhibit warning)

hi.c:3:14: Parameter argc not used

A function parameter is not used in the body of the function. If the argument

is needed for type compatibility or future plans, use /*@unused@*/ in the

argument declaration. (Use -paramuse to inhibit warning)

hi.c:3:25: Parameter argv not used

Finished checking --- 6 code warnings

现在详细看一下结果：

检查结果1：

hi.c:9:2: Unrecognized identifier: c

Identifier used in code has not been declared. (Use -unrecog to inhibit

warning)

hi.c:10:2: Unrecognized identifier: d

hi.c:4:6: Variable a declared but not used

A variable is declared but never used. Use /*@unused@*/ in front of

declaration to suppress message. (Use -varuse to inhibit warning)

这些应该是splint检测到变量c和d没有声明。

检查结果2：

hi.c:7:2: Likely out-of-bounds store:

b[9]

Unable to resolve constraint:

requires 7 >= 9

needed to satisfy precondition:

requires maxSet(b @ hi.c:7:2) >= 9

A memory write may write to an address beyond the allocated buffer. (Use

-likely-boundswrite to inhibit warning)

这些是检查存在数组越界，因为吧b[8]的最大数组序号应该是7，而不是9，所以出现requires 7 >= 9；

检查结果3：

hi.c:3:14: Parameter argc not used

A function parameter is not used in the body of the function. If the argument

is needed for type compatibility or future plans, use /*@unused@*/ in the

argument declaration. (Use -paramuse to inhibit warning)

hi.c:3:25: Parameter argv not used

这些表明argc和argv变量声明了，但是没有使用。这个不是什么问题。

如果小心使用splint，应该对于c语言的程序编写有非常大的辅助作用！