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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Warn on overflow in user-defined literals"
href="https://bugs.llvm.org/show_bug.cgi?id=37865">37865</a>
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<th>Summary</th>
<td>Warn on overflow in user-defined literals
</td>
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<th>Product</th>
<td>clang
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>PC
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<th>OS</th>
<td>Linux
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>enhancement
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>C++
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>zhonghao@pku.org.cn
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<th>CC</th>
<td>dgregor@apple.com, llvm-bugs@lists.llvm.org
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<pre>The code is as follow:
int operator"" _w(unsigned long long){return 0;}
int main(){
return 12345678901234567890123456789012345678901234567890_w;
}
clang++ produces an error message:
error: integer literal is too large to be represented in any integer type
return 12345678901234567890123456789012345678901234567890_w;
^
1 error generated.
g++ accepts it. Indeed, the code comes from a gcc bug report:
<a href="https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52654">https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52654</a>
Please check this problem. I believe that it is a bug in clang++.</pre>
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