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<base href="https://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - clang-cl rejects -fno-delayed-template-parsing"
href="https://llvm.org/bugs/show_bug.cgi?id=27307">27307</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>clang-cl rejects -fno-delayed-template-parsing
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>3.7
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Windows NT
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>Driver
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>sfinae@hotmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>I'm seeing this with Clang/C2 3.7, but I strongly suspect that Clang/LLVM trunk
is equally affected.
This is similar to <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - clang-cl rejects -fno-ms-compatibility"
href="show_bug.cgi?id=25114">https://llvm.org/bugs/show_bug.cgi?id=25114</a> "clang-cl
rejects -fno-ms-compatibility". I want to request maximum strictness from
clang-cl, enabling only actual features like __declspec(dllimport), in order to
keep MSVC's STL headers clean. I recently learned that two-phase lookup is
controlled by a separate option, but clang-cl doesn't understand it:
C:\Temp>type meow.cpp
#include <stdio.h>
void f(int) {
puts("Standard two-phase!");
}
template <typename T> void g(T t) {
f(t);
}
void f(double) {
puts("Microsoft one-phase!");
}
int main() {
g(3.14);
}
C:\Temp>clang-cl /EHsc /nologo /W4 -fno-ms-compatibility meow.cpp && meow
Microsoft one-phase!
C:\Temp>clang-cl /EHsc /nologo /W4 -fno-ms-compatibility
-fno-delayed-template-parsing meow.cpp && meow
clang-cl.exe: warning: ignoring unrecognized command-line option
'-fno-delayed-template-parsing'
clang-cl.exe: warning: argument unused during compilation:
'-fno-delayed-template-parsing'
Microsoft one-phase!
C:\Temp>clang-cl /EHsc /nologo /W4 -fno-ms-compatibility -Xclang
-fno-delayed-template-parsing meow.cpp && meow
error: unknown argument: '-fno-delayed-template-parsing'
As two-phase lookup doesn't affect the ABI, I should be able to request
strictness here.</pre>
</div>
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