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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Assertion failure computing linkage with overload of extern "C" function"
href="http://llvm.org/bugs/show_bug.cgi?id=16247">16247</a>
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<th>Summary</th>
<td>Assertion failure computing linkage with overload of extern "C" function
</td>
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<th>Product</th>
<td>clang
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<th>Version</th>
<td>unspecified
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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
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<th>Severity</th>
<td>normal
</td>
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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>sharparrow1@yahoo.com
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<th>CC</th>
<td>dgregor@apple.com, llvmbugs@cs.uiuc.edu, rafael.espindola@gmail.com
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<th>Classification</th>
<td>Unclassified
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<p>
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<pre>Assertion failed: (!isa<NamedDecl>(static_cast<decl_type*>(this)) ||
cast<NamedDecl>(static_cast<decl_type*>(this))->isLinkageValid()), function
setPreviousDeclaration, file
/Volumes/storage/llvm/tools/clang/lib/AST/../../include/clang/AST/Decl.h, line
3402.
Testcase:
extern "C" void foo(int);
static void foo(double);
void foo(int) { }
void foo(double) {}
It looks like Sema::IsOverload forces the linkage of foo(double) to be computed
before we hook up the declaration chain, which leads to the assertion.
I'm pretty sure this is not well-formed ([dcl.link]p6 says "At most one
function with a particular name can have C language linkage.").
Rafael, this is code you've been working on relatively recently; any thoughts?
(This is also <rdar://problem/14073466>.)</pre>
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