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<body><span class="vcard"><a class="email" href="mailto:jhall1024+llvmbugs@gmail.com" title="Jesse Hall <jhall1024+llvmbugs@gmail.com>"> <span class="fn">Jesse Hall</span></a>
</span> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED INVALID - std::basic_string requires Allocator to have a default constructor"
href="https://llvm.org/bugs/show_bug.cgi?id=24933">bug 24933</a>
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<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>RESOLVED
</td>
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<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>INVALID
</td>
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED INVALID - std::basic_string requires Allocator to have a default constructor"
href="https://llvm.org/bugs/show_bug.cgi?id=24933#c2">Comment # 2</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED INVALID - std::basic_string requires Allocator to have a default constructor"
href="https://llvm.org/bugs/show_bug.cgi?id=24933">bug 24933</a>
from <span class="vcard"><a class="email" href="mailto:jhall1024+llvmbugs@gmail.com" title="Jesse Hall <jhall1024+llvmbugs@gmail.com>"> <span class="fn">Jesse Hall</span></a>
</span></b>
<pre>You're right. I'm terribly sorry. I was trying to simplify from something more
complex, came up with the same error, and assumed I'd simplified correctly.
For what it's worth, the real problem is essentially:
typedef std::basic_string<char, std::char_traits<char>, MyAllocator<char>>
MyString;
typedef std::unordered_map<MyString, void*, std::hash<MyString>,
std::equal_to<MyString>, MyAllocator<std::pair<const MyString, void*>>>
MyUnorderedMap;
...
MyUnorderedMap um;
um.insert(std::make_pair(str, ptr));
Something in insert() is default-constructing the pair<MyString,void*>, which
default-constructs MyString, and fails.
I'll go do my homework properly this time and figure out if this is
expected/correct, and if so, whether there's a valid way to avoid the default
construction.</pre>
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