<html>
<head>
<base href="http://llvm.org/bugs/" />
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [-cxx-abi microsoft] Bad layout of non-empty class hierarchy"
href="http://llvm.org/bugs/show_bug.cgi?id=17761">17761</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[-cxx-abi microsoft] Bad layout of non-empty class hierarchy
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</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>LLVM Codegen
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>david.majnemer@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>take the following:
#include <stddef.h>
#include <stdio.h>
#include <string.h>
char buffer[419430400];
inline void *operator new(size_t, void *pv) { return pv; }
struct TypeName0 {
long long TypeName0FieldName7;
TypeName0() {
printf("%llu\n", (unsigned long long)((size_t)this - (size_t)buffer));
printf("%llu\n", (unsigned long long)((size_t)&TypeName0FieldName7 -
(size_t)buffer));
}
};
struct TypeName2 {
TypeName0 TypeName2FieldName30;
TypeName2() {
printf("%llu\n", (unsigned long long)((size_t)this - (size_t)buffer));
printf("%llu\n", (unsigned long long)((size_t)&TypeName2FieldName30 -
(size_t)buffer));
}
};
struct TypeName12: public TypeName0 {
TypeName2 TypeName12FieldName0;
TypeName12() {
printf("%llu\n", (unsigned long long)((size_t)this - (size_t)buffer));
printf("%llu\n", (unsigned long long)((size_t)&TypeName12FieldName0 -
(size_t)buffer));
}
};
struct TypeName20: public TypeName0, public virtual TypeName12 {
TypeName0 TypeName20FieldName20;
int TypeName20FieldName31;
bool : 3;
TypeName20() {
printf("%llu\n", (unsigned long long)((size_t)this - (size_t)buffer));
printf("%llu\n", (unsigned long long)((size_t)&TypeName20FieldName20 -
(size_t)buffer));
printf("%llu\n", (unsigned long long)((size_t)&TypeName20FieldName31 -
(size_t)buffer));
}
};
int main() {
memset(buffer, 0, sizeof(buffer));
new (buffer) TypeName20;
}
we produce:
32
32
40
40
40
40
32
40
0
0
16
16
0
16
24
cl produces:
40
40
48
48
48
48
40
48
0
0
16
16
0
16
24</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are on the CC list for the bug.</li>
</ul>
</body>
</html>