最小代码示例:
#include <stdio.h>
int main()
{
const int a = 5;
static int b[a];
return 0;
}
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看起来很好,是吗?变量a是不变的.也适用于4.4.
gcc -v
gcc version 6.2.1 20160830 (GCC)
gcc 1.c
1.c: In function ‘main’:
1.c:6:16: error: storage size of ‘b’ isn’t constant
static int b[a];
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顺便说一下,clang很好地编译了这段代码.