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<p>This patch seemed related so I gave it a try, but unfortunately the issue persists:
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<p><a href="https://github.com/llvm-mirror/clang/commit/de0c61bab9ebf86a08a18b281fe018f3a5eed358" class="OWAAutoLink" id="LPlnk793065" previewremoved="true">https://github.com/llvm-mirror/clang/commit/de0c61bab9ebf86a08a18b281fe018f3a5eed358</a></p>
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<p>It might gives some clues as a to a fix though. <br>
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<div class="gmail_quote">---------- Forwarded message ----------<br>
From: <b class="gmail_sendername">Gaetano Checinski</b> <span dir="ltr"><<a href="mailto:gaetano.checinski@gmail.com" target="_blank">gaetano.checinski@gmail.com</a>></span><br>
Date: 2017-01-09 13:49 GMT+00:00<br>
Subject: ASTImporter triggers assertions in some cases.<br>
To: <a href="mailto:cfe-dev@lists.llvm.org" target="_blank">cfe-dev@lists.llvm.org</a><br>
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<div>Hi Guys,</div>
<div>I've noticed that the ASTImporter fails to import some named decls from <iostream> due to an invalid linkagecache (in TagDecl::setTypedefNameFor<wbr>AnonDecl()).</div>
<div>Running with assertions disabled never terminates.</div>
<div>However, while trying to build an minimal reproducible example, i stumbled on a different error regarding templated structs with frienddecls.</div>
<div>I think they may be related because i found this commit: </div>
<div><a href="https://mailtrack.io/trace/link/3bfa5f729eac3d7d441cda522b04d9aa06778eec?url=https%3A%2F%2Fpublic.cdl.uni-saarland.de%2Fnoise%2Fclang%2Fcommit%2Fad0e27b18b0cefab049121d4bfd7b12216e7de6e&signature=1e3968956e628307" target="_blank">https://public.cdl.uni-saarlan<wbr>d.de/noise/clang/commit/ad0e27<wbr>b18b0cefab049121d4bfd7b12216e7<wbr>de6e</a></div>
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<div>The following test fails:</div>
<div> </div>
<div>> // svn: E155007</div>
<div>> // unittests/AST/ASTImporterTest.<wbr>cpp</div>
<div>
<div>> TEST(ImportExpr, TemplatedStructFriend) {</div>
<div>> MatchVerifier<Decl> Verifier;</div>
<div>> EXPECT_TRUE(testImport(</div>
<div>> "void foo() {}; \n"</div>
<div>> "inline namespace D {\n"</div>
<div>> " template<class>\n"</div>
<div>> " struct declToImport {\n"</div>
<div>> " friend bool f(const declToImport &);\n"</div>
<div>> " };\n"</div>
<div>> " template class declToImport<int>;\n"</div>
<div>> "}\n", Lang_CXX, "", Lang_CXX, Verifier, decl()));</div>
<div>> }</div>
<div><br>
</div>
<div>stacktrace: </div>
> clang/llvm/tools/clang/lib/AST<wbr>/DeclFriend.cpp, line 43.
<div>> 0 ASTTests 0x0000000104f8e135 l </div>
<div>> lvm::sys::PrintStackTrace(llvm<wbr>::raw_ostream&) + 101</div>
<div>> 1 ASTTests 0x0000000104f8e779 PrintStackTraceSignalHandler(v<wbr>oid*) + 25</div>
<div>> 2 ASTTests 0x0000000104f8a6d9 llvm::sys::RunSignalHandlers() + 425</div>
<div>> 3 ASTTests 0x0000000104f8ec92 SignalHandler(int) + 354</div>
<div>> 4 libsystem_platform.dylib 0x00007fff9e3eebba _sigtramp + 26</div>
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<div>Thanks in advance,</div>
<div>Gaetano Checinski</div>
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