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If a function pointer is set to refer to an incompatible function , invoking that function via the pointer may cause unexpected data to be taken from the process stack. As a result, unexpected data may be accessed by the called function. This example also violates rule \[[DCL35-C. Do not convert a function pointer to a function of an incompatible type]\]. |
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int add(int x, int y, int z) {
return x + y + z;
}
int main(int argc, char *argv[]) {
int (*fn_ptr) (int, int) ;
int res;
fn_ptr = add;
res = fn_ptr(2, 3); /* incorrect */
/* ... */
return 0;
}
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