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<base href="http://llvm.org/bugs/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Assignment from "void *" without cast treated as error within extern "C" block"
href="http://llvm.org/bugs/show_bug.cgi?id=16407">16407</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Assignment from "void *" without cast treated as error within extern "C" block
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>3.3
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>FreeBSD
</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>C++
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>gibbs@FreeBSD.org
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvmbugs@cs.uiuc.edu
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>[gibbs@aslan ~]$ cat foo.cpp
#ifdef __cplusplus
extern "C" {
#endif
struct foo {
int a;
};
static inline void
initialize_foo(void *data)
{
struct foo *foo = data;
foo->a = 1;
}
#ifdef __cplusplus
}
#endif
int
main(int argc, const char *argv[])
{
struct foo my_foo;
initialize_foo(&my_foo);
return (0);
}
[gibbs@aslan ~]$ clang++ -v
FreeBSD clang version 3.3 (trunk 178860) 20130405
Target: x86_64-unknown-freebsd10.0
Thread model: posix
[gibbs@aslan ~]$ clang++ foo.cpp
foo.cpp:13:14: error: cannot initialize a variable of type 'struct foo *' with
an lvalue of type 'void *'
struct foo *foo = data;
^ ~~~~
1 error generated.
The work around for this is trivial, but in our environment would mean forking
a third party C header file.</pre>
</div>
</p>
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