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Add some extra validation before deferring.

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This commit is contained in:
Mark de Wever 2011-10-15 18:06:33 +00:00
parent 087e711106
commit c9cf48b676
1 changed files with 2 additions and 0 deletions
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2
src/whiteboard/side_actions.hpp
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@ -319,6 +319,7 @@ public:
}
this_t& operator--()
{
assert(contents_);
while(base_ == (*contents_)[turn_num_].begin())
base_ = (*contents_)[--turn_num_].end();
--base_;
@ -373,6 +374,7 @@ private:
void init()
{
assert(contents_);
while(base_ == (*contents_)[turn_num_].end() //terminates thanks to invariant
&& turn_num_+1 < contents_->size())
base_ = (*contents_)[++turn_num_].begin();