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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Bad error "uuid does not match previous declaration" when a duplicate __declspec(uuid) is in the precomp"
href="https://bugs.llvm.org/show_bug.cgi?id=48006">48006</a>
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<th>Summary</th>
<td>Bad error "uuid does not match previous declaration" when a duplicate __declspec(uuid) is in the precomp
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<th>Product</th>
<td>clang
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<th>Version</th>
<td>11.0
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<th>Hardware</th>
<td>PC
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<th>OS</th>
<td>All
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
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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>shigoyal@microsoft.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>This is valid C++.
This error only repros with Clang 11 when using a precomp.
Does not repro at all in Clang 10 and also doesn't repro when not using precomp
in Clang 11.
============
Repro Steps:
precomp.h:
struct __declspec(uuid("edbf631b-8001-47bd-8b77-ca235e14d4c5")) Foo;
foo.cpp:
#include "precomp.h"
struct __declspec(uuid("edbf631b-8001-47bd-8b77-ca235e14d4c5")) Bar;
struct __declspec(uuid("edbf631b-8001-47bd-8b77-ca235e14d4c5")) Foo;
Commands to run the build:
clang-cl.exe /c /Yc /Fpprecomp.pch /Foprecomp.obj /Tp precomp.h
clang-cl.exe /c /Yuprecomp.h /Fpprecomp.pch /Fo"." foo.cpp
Error:
foo.cpp(4,19): error: uuid does not match previous declaration
struct __declspec(uuid("edbf631b-8001-47bd-8b77-ca235e14d4c5")) Foo;
^
./precomp.h(1,19): note: previous uuid specified here
struct __declspec(uuid("edbf631b-8001-47bd-8b77-ca235e14d4c5")) Foo;</pre>
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