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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Clang accepts empty declaration in a template declaration"
href="https://bugs.llvm.org/show_bug.cgi?id=46231">46231</a>
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<th>Summary</th>
<td>Clang accepts empty declaration in a template declaration
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<th>Product</th>
<td>clang
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<th>Version</th>
<td>trunk
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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>haoxintu@gmail.com
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<th>CC</th>
<td>blitzrakete@gmail.com, dgregor@apple.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
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<pre>Hi, there,
clang accepts this code --- test.cc:
template<class> ;
int main(){return 0;}
which contains a empty declaration in a template declaration.
In clang-trunk, clang just give a warning and then compile it successfully.
$clang++-trunk test.cc
test.cc:1:16: warning: declaration does not declare anything
[-Wmissing-declarations]
template<class>; ^
1 warning generated.
But in gcc, icc, or msvc, they all fail to compile it.
For example, in gcc
$g++ test.cc
test.cc:1:16: error: expected unqualified-id before ‘;’ token
1 | template<class>;
|
^
I also tested in other released clang versions, they all accepts test.cc.</pre>
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