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<p style="margin: 10px 0 0 0">I hit Enter too soon >_></p>
<p style="margin: 10px 0 0 0">Sample program:</p>
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<pre class="code-java" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
#include <iostream>
#include <exception>
#include <log4shib/Category.hh>
#include <log4shib/PropertyConfigurator.hh>
<span class="code-object" style="color: #910091">int</span> main(<span class="code-object" style="color: #910091">int</span> argc, <span class="code-object" style="color: #910091">char</span>* argv[])
{
<span class="code-keyword" style="color: #000091">if</span> (argc < 2)
<span class="code-keyword" style="color: #000091">return</span> 1;
std::string initFileName = argv[1];
<span class="code-keyword" style="color: #000091">try</span>
{
log4shib::PropertyConfigurator::configure(initFileName);
log4shib::Category& root = log4shib::Category::getRoot();
root.warn(<span class="code-quote" style="color: #009100">"Storm is coming"</span>);
log4shib::Category::shutdown();
}
<span class="code-keyword" style="color: #000091">catch</span> (<span class="code-keyword" style="color: #000091">const</span> std::exception& ex) {
std::cout << <span class="code-quote" style="color: #009100">"Caught exception: "</span> << ex.what() << std::endl;
<span class="code-keyword" style="color: #000091">return</span> 1;
}
<span class="code-keyword" style="color: #000091">return</span> 0;
}
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<p style="margin: 10px 0 0 0">Because there are 2 ways to hit this, there are 2 fixes that be should be put in place. Here are the ones I've found to work:</p>
<ul class="alternate" type="square">
<li>
Make PropertyConfiguratorImpl::getCategories output to a std::set instead of a std::list, so that rootCategory cannot be hit multiple times.
</li>
<li>
Modify PropertyConfigurationImpl::getCategories to reject categories with an empty name, as they will also resolve to the root category (cfr. Category::getRoot)
</li>
</ul>
<p style="margin: 10px 0 0 0">Note that upstream log4cpp is not affected because it does not have the ownership modification of the root category.</p>
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