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correctly handle negative values

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sometimes, get_number_of_rows can return negative value, and this could lead to crash when
trying to resize vector

Signed-off-by: Mateusz Loskot <mateusz@loskot.net>
This commit is contained in:
Alex Ott
2012-02-20 11:40:16 +01:00
committed by Mateusz Loskot
parent 64358c858f
commit 1f0c57417e
1 changed files with 8 additions and 4 deletions
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src/core/statement.cpp
+8 -4
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@@ -495,16 +495,20 @@ bool statement_impl::resize_intos(std::size_t upperBound)
// this function does not need to take into account the intosForRow_
// elements, since they are never used for bulk operations
std::size_t rows = backEnd_->get_number_of_rows();
if (upperBound != 0 && upperBound < rows)
int rows = backEnd_->get_number_of_rows();
if (rows < 0)
{
rows = 0;
}
if (upperBound != 0 && upperBound < (std::size_t)rows)
{
rows = upperBound;
rows = (int)upperBound;
}
std::size_t const isize = intos_.size();
for (std::size_t i = 0; i != isize; ++i)
{
intos_[i]->resize(rows);
intos_[i]->resize((std::size_t)rows);
}
return rows > 0 ? true : false;