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Fix exception bug in asssignment.

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The hash and key equality functions were assigned before allocating new
buckets. If that allocation failed, then the existing elements would be
left in place - so if accessed after the exception they could be in the
wrong buckets or equivalent elements could be incorrectly grouped
together.
This commit is contained in:
Daniel James
2016-10-02 13:04:25 +01:00
parent 588ad6e69f
commit e7b20d2877
5 changed files with 159 additions and 6 deletions
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16
test/helpers/exception_test.hpp
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@@ -111,16 +111,28 @@ namespace test {
exceptions_enable(exceptions_enable const&);
bool old_value_;
bool released_;
public:
exceptions_enable(bool enable)
: old_value_(exceptions_enabled)
: old_value_(exceptions_enabled), released_(false)
{
exceptions_enabled = enable;
}
~exceptions_enable()
{
exceptions_enabled = old_value_;
if (!released_) {
exceptions_enabled = old_value_;
released_ = true;
}
}
void release()
{
if (!released_) {
exceptions_enabled = old_value_;
released_ = true;
}
}
};