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Code Issues 1 Releases Wiki Activity

Simpler overflow check.

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This commit is contained in:
Calvin Rose 2021-01-29 20:11:38 -06:00
parent 9aed578466
commit 04805d106e
2 changed files with 8 additions and 10 deletions
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4
src/core/buffer.c
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@ -91,9 +91,7 @@ void janet_buffer_extra(JanetBuffer *buffer, int32_t n) {
} }
int32_t new_size = buffer->count + n; int32_t new_size = buffer->count + n;
if (new_size > buffer->capacity) { if (new_size > buffer->capacity) {
size_t new_capacity_sizet = (size_t) (new_size) * 2; int32_t new_capacity = (new_size > (INT32_MAX / 2)) ? INT32_MAX : (new_size * 2);
if (new_capacity_sizet > INT32_MAX) new_capacity_sizet = INT32_MAX;
int32_t new_capacity = (int32_t) new_capacity_sizet;
uint8_t *new_data = realloc(buffer->data, new_capacity * sizeof(uint8_t)); uint8_t *new_data = realloc(buffer->data, new_capacity * sizeof(uint8_t));
janet_gcpressure(new_capacity - buffer->capacity); janet_gcpressure(new_capacity - buffer->capacity);
if (NULL == new_data) { if (NULL == new_data) {