SEI CERT C Coding Standard

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Validate size arguments used in VLA declarations. The solution below ensures the size argument, s, used to allocate vla is in a valid range: 1 to a user defined constant.

Code Block
bgColor#ccccff
#defineenum { MAX_ARRAY = 1024 };

void func(size_t s) {
   int vla[s];
   /* ... */
}

/* ... */
if (s < MAX_ARRAY && s != 0) {
   func(s);
}
else {
   /* Handle Error */
}
/* ... */

...