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Fix overflow in PODArray

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This commit is contained in:
Alexey Milovidov 2022-09-17 22:26:02 +02:00
parent 49a9c9e5fa
commit 9ca4e2ec7c
1 changed files with 7 additions and 1 deletions
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8
src/Common/PODArray.h
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@ -115,7 +115,13 @@ protected:
}
/// Minimum amount of memory to allocate for num_elements, including padding.
static size_t minimum_memory_for_elements(size_t num_elements) { return byte_size(num_elements) + pad_right + pad_left; } /// NOLINT
static size_t minimum_memory_for_elements(size_t num_elements)
{
size_t amount;
if (__builtin_add_overflow(byte_size(num_elements), pad_left + pad_right, &amount))
throw Exception("Amount of memory requested to allocate is more than allowed", ErrorCodes::CANNOT_ALLOCATE_MEMORY);
return amount;
}
void alloc_for_num_elements(size_t num_elements) /// NOLINT
{