sikkienl/dash
1
0
Fork 0
mirror of https://github.com/dashpay/dash.git synced 2024-12-26 20:42:59 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity

Fix some empty vector references

Browse Source 
streams.h has some methods that can be tricked into dereferencing
null pointers or end() iterators. Fix this.
This commit is contained in:
Pieter Wuille 2017-04-13 02:33:04 -07:00
parent 27faa6cccd
commit f478d98fe4
1 changed files with 6 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
src/streams.h
View File

@ -248,7 +248,8 @@ public:
void insert(iterator it, std::vector<char>::const_iterator first, std::vector<char>::const_iterator last)
{
assert(last - first >= 0);
if (last == first) return;
assert(last - first > 0);
if (it == vch.begin() + nReadPos && (unsigned int)(last - first) <= nReadPos)
{
// special case for inserting at the front when there's room
@ -261,7 +262,8 @@ public:
void insert(iterator it, const char* first, const char* last)
{
assert(last - first >= 0);
if (last == first) return;
assert(last - first > 0);
if (it == vch.begin() + nReadPos && (unsigned int)(last - first) <= nReadPos)
{
// special case for inserting at the front when there's room
@ -339,6 +341,8 @@ public:
void read(char* pch, size_t nSize)
{
if (nSize == 0) return;
// Read from the beginning of the buffer
unsigned int nReadPosNext = nReadPos + nSize;
if (nReadPosNext >= vch.size())