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Bug 2684989: flex_string insert char fails with SmallStringOpt

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git-svn-id: svn://svn.code.sf.net/p/loki-lib/code/trunk@1006 7ec92016-0320-0410-acc4-a06ded1c099a
This commit is contained in:
jfbastien 2009-03-12 12:28:58 +00:00
parent 208bbae624
commit 0174e55298
1 changed files with 17 additions and 19 deletions
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36
include/loki/flex/flex_string_shell.h
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@ -548,29 +548,27 @@ private:
Invariant checker(*this);
(void) checker;
assert(begin() <= p && p <= end());
if (capacity() - size() < n)
const size_type insertOffset(p - begin());
const size_type originalSize(size());
if(n < originalSize - insertOffset)
{
const size_type sz = p - begin();
reserve(size() + n);
p = begin() + sz;
}
const iterator oldEnd = end();
//if (p + n < oldEnd) // replaced because of crash (pk)
if( n < size_type(oldEnd - p))
{
append(oldEnd - n, oldEnd);
//std::copy(
// reverse_iterator(oldEnd - n),
// reverse_iterator(p),
// reverse_iterator(oldEnd));
flex_string_details::pod_move(&*p, &*oldEnd - n, &*p + n);
std::fill(p, p + n, c);
// The new characters fit within the original string.
// The characters that are pushed back need to be moved because they're aliased.
// The appended characters will all be overwritten by the move.
append(n, value_type(0));
value_type * begin(&*begin());
flex_string_details::pod_move(begin + insertOffset, begin + originalSize, begin + insertOffset + n);
std::fill(begin + insertOffset, begin + insertOffset + n, c);
}
else
{
append(n - (end() - p), c);
append(p, oldEnd);
std::fill(p, oldEnd, c);
// The new characters exceed the original string.
// The characters that are pushed back can simply be copied since they aren't aliased.
// The appended characters will partly be overwritten by the copy.
append(n, c);
value_type * begin(&*begin());
flex_string_details::pod_copy(begin + insertOffset, begin + originalSize, begin + insertOffset + n);
std::fill(begin + insertOffset, begin + originalSize, c);
}
return *this;
}