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Hashtable: fail hard on too big size request
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14
Hashtable.c
14
Hashtable.c
@ -15,6 +15,7 @@ in the source distribution for its full text.
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#include <stdlib.h>
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#include <string.h>
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#include "CRT.h"
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#include "Macros.h"
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#include "XUtils.h"
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@ -95,14 +96,13 @@ static const uint64_t OEISprimes[] = {
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};
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static uint64_t nextPrime(size_t n) {
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assert(n <= OEISprimes[ARRAYSIZE(OEISprimes) - 1]);
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for (size_t i = 0; i < ARRAYSIZE(OEISprimes); i++) {
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/* on 32-bit make sure we do not return primes not fitting in size_t */
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for (size_t i = 0; i < ARRAYSIZE(OEISprimes) && OEISprimes[i] < SIZE_MAX; i++) {
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if (n <= OEISprimes[i])
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return OEISprimes[i];
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}
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return OEISprimes[ARRAYSIZE(OEISprimes) - 1];
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CRT_fatalError("Hashtable: no prime found");
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}
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Hashtable* Hashtable_new(size_t size, bool owner) {
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@ -215,8 +215,12 @@ void Hashtable_put(Hashtable* this, ht_key_t key, void* value) {
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assert(value);
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/* grow on load-factor > 0.7 */
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if (10 * this->items > 7 * this->size)
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if (10 * this->items > 7 * this->size) {
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if (SIZE_MAX / 2 < this->size)
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CRT_fatalError("Hashtable: size overflow");
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Hashtable_setSize(this, 2 * this->size);
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}
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insert(this, key, value);
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